Waste Disposal & Sustainable Energy最新文献_第3页

Recoverable biobased products from agro-food and industrial wastes: implications for wealth and health 从农业食品和工业废物中回收的生物基产品：对财富和健康的影响

Waste Disposal & Sustainable Energy

Pub Date : 2025-07-25 DOI: 10.1007/s42768-025-00243-4

Fetene Fufa Bakare, Tsion Chuni Akililu, Eset Negash Kebebew, Allah Dekama Jara, Hailemariam Gebru, Teshome Taye

Wastes can be defined as unwanted materials that are dumped away from several sources. It can be a by-product of home, agricultural, industrial, commercial, mining, and other ventures, sources, or activities. Nowadays such waste materials are not just waste; they are becoming the source of wealth and health. A substantial volume of organic waste, around 1.3 billion tons per year, is identified as a possible source of feedstock for biobased goods. Waste materials are being used for the development of various useful products, such as bioenergy, biomaterials, biotechnology, and so on. Wastes are valuable resources for health and wealth creation, with an emphasis on resources recovered from environmental and agro-food wastes applying via biotechnology. This review focuses on biotechnological applications in waste valorizations and examines the health and economic effects of obtaining resources from agro-food and environmental wastes. According to the quantitative findings, producing biogas from agro-food sector waste can provide between 80 and 150 m³ of biogas for every ton of fresh organic waste, which result in significant energy savings and greenhouse gas mitigation. Furthermore, it has been suggested that converting just 10% of the world’s food waste may result in financial gains of over 100 billion USD in addition to reducing the health hazards related to trash disposal. By demonstrating that the valorization not only generates financial gains through the development of bioplastics and biofertilizers but also improves health outcomes by reducing pollution and improving food safety, the paper highlights the double advantages of waste recovery. Besides, it emphasizes the application of biotechnological methods, showcasing innovative and scientific approaches to resource recovery in which the reviewed findings will be relevant for industry stakeholders and policymakers.

Graphical abstract

废物可以定义为从几个来源倾倒的不需要的物质。它可以是家庭、农业、工业、商业、采矿和其他企业、来源或活动的副产品。如今，这些废料不仅仅是废物；他们正在成为财富和健康的源泉。大量的有机废物，每年约13亿吨，被确定为生物基产品的可能原料来源。废弃物正被用于开发各种有用的产品，如生物能源、生物材料、生物技术等。废物是健康和创造财富的宝贵资源，重点是通过生物技术从环境和农业食品废物中回收资源。本综述的重点是生物技术在废物增值中的应用，并审查从农业食品和环境废物中获取资源的健康和经济影响。根据定量调查结果，利用农业食品部门废物生产沼气，每吨新鲜有机废物可产生80至150立方米沼气，从而显著节约能源并减少温室气体排放。此外，据建议，除了减少与垃圾处理有关的健康危害外，仅转化世界上10%的食物垃圾就可能带来超过1000亿美元的经济收益。通过证明增值不仅通过开发生物塑料和生物肥料产生经济收益，而且通过减少污染和提高食品安全改善健康结果，本文强调了废物回收的双重优势。此外，它强调生物技术方法的应用，展示了资源回收的创新和科学方法，其中审查的结果将与行业利益相关者和决策者相关。图形抽象

{"title":"Recoverable biobased products from agro-food and industrial wastes: implications for wealth and health","authors":"Fetene Fufa Bakare, Tsion Chuni Akililu, Eset Negash Kebebew, Allah Dekama Jara, Hailemariam Gebru, Teshome Taye","doi":"10.1007/s42768-025-00243-4","DOIUrl":"10.1007/s42768-025-00243-4","url":null,"abstract":"<div><p>Wastes can be defined as unwanted materials that are dumped away from several sources. It can be a by-product of home, agricultural, industrial, commercial, mining, and other ventures, sources, or activities. Nowadays such waste materials are not just waste; they are becoming the source of wealth and health. A substantial volume of organic waste, around 1.3 billion tons per year, is identified as a possible source of feedstock for biobased goods. Waste materials are being used for the development of various useful products, such as bioenergy, biomaterials, biotechnology, and so on. Wastes are valuable resources for health and wealth creation, with an emphasis on resources recovered from environmental and agro-food wastes applying via biotechnology. This review focuses on biotechnological applications in waste valorizations and examines the health and economic effects of obtaining resources from agro-food and environmental wastes. According to the quantitative findings, producing biogas from agro-food sector waste can provide between 80 and 150 m<sup>3</sup> of biogas for every ton of fresh organic waste, which result in significant energy savings and greenhouse gas mitigation. Furthermore, it has been suggested that converting just 10% of the world’s food waste may result in financial gains of over 100 billion USD in addition to reducing the health hazards related to trash disposal. By demonstrating that the valorization not only generates financial gains through the development of bioplastics and biofertilizers but also improves health outcomes by reducing pollution and improving food safety, the paper highlights the double advantages of waste recovery. Besides, it emphasizes the application of biotechnological methods, showcasing innovative and scientific approaches to resource recovery in which the reviewed findings will be relevant for industry stakeholders and policymakers.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"521 - 537"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing anaerobic digestion of waste-activated sludge containing disposable face masks through hydrothermal pretreatment: improving methane production and reducing toxicity 通过水热预处理提高含一次性口罩的废活性污泥厌氧消化：提高甲烷产量，降低毒性

Waste Disposal & Sustainable Energy

Pub Date : 2025-07-16 DOI: 10.1007/s42768-025-00242-5

Ming Liu, Xuezhi Wang, Ting Fan, Xiaoli Zhao

Disposable face masks (DFMs), which are essential for mitigating the spread of infectious diseases like SARS-CoV-2, corona virus disease 2019 (COVID-19), Ebola, and tuberculosis, create significant environmental challenges due to improper disposal. DFMs frequently accumulate in waste-activated sludge (WAS), posing potential environmental hazards. Anaerobic digestion (AD) is typically employed to stabilize and recovery resource from WAS; however, the presence of DFMs substantially disrupts the AD process. This study explored the potential of integrating hydrothermal pretreatment (HTT) with AD to maximize methane yield while mitigating the toxicological impact of mask-derived pollutants. The HTT of polypropylene (PP) (primary constituent of masks) or masks was conducted in 100 mL stainless-steel reactors with a mass concentration of 4 g per 40 mL deionized water, heated at 2.5 °C/min to 160 °C for durations of 0.5, 1, and 2 h. HTT increased the surface roughness of PP, induced oxygenated functional groups (–OH and C=O), enhanced the leaching of dissolved organic carbon (DOC), and reduced hydrophobicity and relative crystallinity, effectively addressing the limitations of enzymatic hydrolysis. Compared to untreated masks, cumulative methane production increased by 16.2%, 31.5%, and 20.8% for HTT pretreatment at 160 °C for 0.5, 1, and 2 h, respectively. Microbial community analysis indicated that HTT increased the relative abundance of specific hydrolytic-acidifying (Bacteroidota, Acidobacteria, and Desulfobacterota), and methanogenic bacteria (Methanosaeta and Candidatus_Methanofastidiosum) in AD process. Phytotoxicity tests demonstrated that digestates from AD of HTT mask at 160 °C for 1 h increased germination index of plants by 18.1%. This study shows HTT is a promising method for enhancing AD efficiency and lowering DFMs toxicity.

Graphical abstract

一次性口罩对于缓解SARS-CoV-2、2019冠状病毒病（COVID-19）、埃博拉病毒和结核病等传染病的传播至关重要，但由于处置不当，造成了重大的环境挑战。dfm经常在废物活性污泥（WAS）中积累，造成潜在的环境危害。厌氧消化（AD）通常用于稳定和回收WAS中的资源；然而，dfm的存在实质上破坏了AD的进程。本研究探索了水热预处理（HTT）与AD相结合的潜力，以最大限度地提高甲烷产量，同时减轻面罩衍生污染物的毒理学影响。聚丙烯（PP）（掩膜的主要成分）或掩膜在100 mL不锈钢反应器中进行HTT，质量浓度为4 g / 40 mL去离子水，在2.5°C/min至160°C下加热0.5,1和2 h。HTT增加了PP的表面粗糙度，诱导氧化官能团（-OH和C=O），增强了溶解有机碳（DOC）的浸出，降低了疏水性和相对结晶度。有效地解决酶水解的局限性。与未处理面罩相比，160°C高温预处理0.5、1和2 h的累计甲烷产量分别增加了16.2%、31.5%和20.8%。微生物群落分析表明，HTT增加了AD过程中特定水解酸化菌（Bacteroidota, Acidobacteria, Desulfobacterota）和产甲烷菌（Methanosaeta和Candidatus_Methanofastidiosum）的相对丰度。植物毒性试验表明，HTT膜中AD的消化液在160℃下处理1 h，使植物的发芽指数提高了18.1%。该研究表明，HTT是一种很有前途的提高AD效率和降低DFMs毒性的方法。图形抽象

{"title":"Enhancing anaerobic digestion of waste-activated sludge containing disposable face masks through hydrothermal pretreatment: improving methane production and reducing toxicity","authors":"Ming Liu, Xuezhi Wang, Ting Fan, Xiaoli Zhao","doi":"10.1007/s42768-025-00242-5","DOIUrl":"10.1007/s42768-025-00242-5","url":null,"abstract":"<div><p>Disposable face masks (DFMs), which are essential for mitigating the spread of infectious diseases like SARS-CoV-2, corona virus disease 2019 (COVID-19), Ebola, and tuberculosis, create significant environmental challenges due to improper disposal. DFMs frequently accumulate in waste-activated sludge (WAS), posing potential environmental hazards. Anaerobic digestion (AD) is typically employed to stabilize and recovery resource from WAS; however, the presence of DFMs substantially disrupts the AD process. This study explored the potential of integrating hydrothermal pretreatment (HTT) with AD to maximize methane yield while mitigating the toxicological impact of mask-derived pollutants. The HTT of polypropylene (PP) (primary constituent of masks) or masks was conducted in 100 mL stainless-steel reactors with a mass concentration of 4 g per 40 mL deionized water, heated at 2.5 °C/min to 160 °C for durations of 0.5, 1, and 2 h. HTT increased the surface roughness of PP, induced oxygenated functional groups (–OH and C=O), enhanced the leaching of dissolved organic carbon (DOC), and reduced hydrophobicity and relative crystallinity, effectively addressing the limitations of enzymatic hydrolysis. Compared to untreated masks, cumulative methane production increased by 16.2%, 31.5%, and 20.8% for HTT pretreatment at 160 °C for 0.5, 1, and 2 h, respectively. Microbial community analysis indicated that HTT increased the relative abundance of specific hydrolytic-acidifying (<i>Bacteroidota</i>, <i>Acidobacteria</i>, and <i>Desulfobacterota</i>), and methanogenic bacteria (<i>Methanosaeta</i> and <i>Candidatus_Methanofastidiosum</i>) in AD process. Phytotoxicity tests demonstrated that digestates from AD of HTT mask at 160 °C for 1 h increased germination index of plants by 18.1%. This study shows HTT is a promising method for enhancing AD efficiency and lowering DFMs toxicity.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"437 - 451"},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of heavy metal zinc and lead concentrations in waste incineration fly ash based on hyperspectral reflectance features 基于高光谱反射特征的垃圾焚烧飞灰中重金属锌、铅浓度预测

Waste Disposal & Sustainable Energy

Pub Date : 2025-07-10 DOI: 10.1007/s42768-025-00236-3

Wenyuan Wang, Liqiang Zhang, Fei Wang, Wei Xiong, Haibin Cui, Xinrong Wu, Guojun Lv, Lihong Zhang, Qiyu Gao

Heavy metal contamination in waste incineration fly ash poses serious environmental and public health risks, necessitating efficient and precise detection methods. Traditional techniques require complex sample preparation and lengthy analysis, limiting their suitability for on-site or real-time monitoring. To address this, this study proposes a rapid detection method using visible and near-infrared reflectance spectroscopy to improve efficiency and reduce costs. Zn (zinc) and Pb (lead) spectral characteristics were analyzed through first-order differentiation (FD), second-order differentiation (SD), de-trending (DT), and logarithm of the reciprocal (LogInv) transformations, followed by continuous wavelet transform (CWT) to extract key bands (max |r|=0.78). A stacking model integrating partial least squares regression (PLSR), back-propagation neural network (BPNN), support vector regression (SVR), random forest (RF), and extreme gradient boosting (XGBoost) was developed to optimize spectral transformation and inversion modeling. Stacking outperformed individual models, achieving the highest accuracy for Zn (R²=0.748) and Pb (R²=0.735) with CWT-SD and CWT-FD transformation. BPNN exhibited overfitting in small samples, whereas PLSR was constrained by linear assumptions. In contrast, stacking combines the strengths of all the base models, improving accuracy and stability. This study elucidates the spectral characteristics of fly ash and validates the effectiveness of stacking in hyperspectral heavy metal prediction. The findings provide theoretical and technical support for efficient, non-destructive detection, with promising applications in waste incineration management and environmental monitoring.

Graphical Abstract

垃圾焚烧飞灰中的重金属污染具有严重的环境和公共健康风险，需要高效、精确的检测方法。传统技术需要复杂的样品制备和冗长的分析，限制了它们对现场或实时监测的适用性。针对这一问题，本研究提出了一种利用可见光和近红外反射光谱的快速检测方法，以提高效率，降低成本。通过一阶微分（FD）、二阶微分（SD）、去趋势（DT）和对数倒数（LogInv）变换分析Zn （zinc）和Pb （lead）的光谱特征，然后通过连续小波变换（CWT）提取关键波段（max |r|=0.78）。基于偏最小二乘回归（PLSR）、反向传播神经网络（BPNN）、支持向量回归（SVR）、随机森林（RF）和极端梯度增强（XGBoost）的叠加模型，对光谱变换和反演建模进行了优化。叠加优于单个模型，在CWT-SD和CWT-FD转换下，Zn （R2=0.748）和Pb （R2=0.735）的准确率最高。BPNN在小样本中表现出过拟合，而PLSR则受到线性假设的约束。相比之下，叠加结合了所有基础模型的优势，提高了精度和稳定性。本研究阐明了粉煤灰的光谱特征，验证了叠加在高光谱重金属预测中的有效性。研究结果为高效、无损检测提供了理论和技术支持，在垃圾焚烧管理和环境监测方面具有广阔的应用前景。图形抽象

{"title":"Prediction of heavy metal zinc and lead concentrations in waste incineration fly ash based on hyperspectral reflectance features","authors":"Wenyuan Wang, Liqiang Zhang, Fei Wang, Wei Xiong, Haibin Cui, Xinrong Wu, Guojun Lv, Lihong Zhang, Qiyu Gao","doi":"10.1007/s42768-025-00236-3","DOIUrl":"10.1007/s42768-025-00236-3","url":null,"abstract":"<div><p>Heavy metal contamination in waste incineration fly ash poses serious environmental and public health risks, necessitating efficient and precise detection methods. Traditional techniques require complex sample preparation and lengthy analysis, limiting their suitability for on-site or real-time monitoring. To address this, this study proposes a rapid detection method using visible and near-infrared reflectance spectroscopy to improve efficiency and reduce costs. Zn (zinc) and Pb (lead) spectral characteristics were analyzed through first-order differentiation (FD), second-order differentiation (SD), de-trending (DT), and logarithm of the reciprocal (LogInv) transformations, followed by continuous wavelet transform (CWT) to extract key bands (max |<i>r</i>|=0.78). A stacking model integrating partial least squares regression (PLSR), back-propagation neural network (BPNN), support vector regression (SVR), random forest (RF), and extreme gradient boosting (XGBoost) was developed to optimize spectral transformation and inversion modeling. Stacking outperformed individual models, achieving the highest accuracy for Zn (<i>R</i><sup>2</sup>=0.748) and Pb (<i>R</i><sup>2</sup>=0.735) with CWT-SD and CWT-FD transformation. BPNN exhibited overfitting in small samples, whereas PLSR was constrained by linear assumptions. In contrast, stacking combines the strengths of all the base models, improving accuracy and stability. This study elucidates the spectral characteristics of fly ash and validates the effectiveness of stacking in hyperspectral heavy metal prediction. The findings provide theoretical and technical support for efficient, non-destructive detection, with promising applications in waste incineration management and environmental monitoring.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 2","pages":"165 - 184"},"PeriodicalIF":0.0,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term microbial community dynamics in full-scale dry and wet anaerobic digesters for food waste 食物垃圾全尺寸干湿厌氧沼气池的长期微生物群落动态

Waste Disposal & Sustainable Energy

Pub Date : 2025-07-08 DOI: 10.1007/s42768-025-00240-7

Jinlin Zou, Zhenchao Shi, Wei Peng, Hua Zhang, Fan Lü, Pinjing He

This study investigated the long-term microbial community dynamics (nearly 200 d) in four full-scale dry anaerobic digestion (DAD) reactors and two wet anaerobic digestion (WAD) reactors for treating food waste. Compared with WAD, DAD demonstrated significantly higher operational instability under elevated concentrations of volatile fatty acids (VFAs, 8000–15000 mg/L) and total ammonia nitrogen (TAN, 5000–7500 mg/L), particularly during recovery phases following prolonged feeding interruption. 16S rRNA sequencing analysis revealed distinct microbial community structures between the two systems. In DAD, syntrophic acetate oxidation bacteria (SAOB) dominated by the genera Halocella and DTU014 was significantly enriched, whereas the bacterial community in WAD was primarily characterized by Defluviitoga. Both systems exhibited hydrogenotrophic methanogenesis (HM) as the dominant pathway, with Methanoculleus being the prevalent archaeal genus in both configurations. Notably, Methanobrevibacter was exclusively detected in DAD. Furthermore, increasing VFA concentrations triggered a structural reorganization of microbial communities in DAD. The relative abundances of Halocella and DTU014 decreased markedly under high-VFA stress, whereas Methanobrevibacter abundance was positively correlated with VFA accumulation. These findings highlight system-specific microbial resilience mechanisms and provide critical insights into VFA-driven community dynamics in anaerobic digestion systems. The results have practical implications for optimizing process stability and methane recovery efficiency in DAD, particularly under high organic loading or feedstock variability conditions.

Graphical abstract

研究了4个全尺寸干式厌氧消化（DAD）反应器和2个湿式厌氧消化（WAD）反应器处理食物垃圾的长期微生物群落动态（近200 d）。与WAD相比，在挥发性脂肪酸（VFAs, 8000-15000 mg/L）和总氨氮（TAN, 5000-7500 mg/L）浓度升高的情况下，DAD表现出明显更高的操作不稳定性，尤其是在长时间饲喂中断后的恢复阶段。16S rRNA测序分析显示，两种系统的微生物群落结构不同。在DAD中，以Halocella属和DTU014属为主的合营养乙酸氧化菌（SAOB）显著富集，而在WAD中，细菌群落以Defluviitoga为主。两种系统均以氢营养化产甲烷（HM）为主要途径，其中甲烷菌属（Methanoculleus）是两种配置中普遍存在的古菌属。值得注意的是，在DAD中只检测到甲烷预防菌。此外，VFA浓度的增加引发了DAD微生物群落的结构重组。高VFA胁迫下，Halocella和DTU014的相对丰度显著降低，而methanobrebacter的丰度与VFA积累量呈正相关。这些发现突出了系统特异性微生物恢复机制，并为厌氧消化系统中vfa驱动的群落动态提供了重要见解。研究结果对优化DAD工艺稳定性和甲烷回收效率具有实际意义，特别是在高有机负荷或原料可变性条件下。图形抽象

{"title":"Long-term microbial community dynamics in full-scale dry and wet anaerobic digesters for food waste","authors":"Jinlin Zou, Zhenchao Shi, Wei Peng, Hua Zhang, Fan Lü, Pinjing He","doi":"10.1007/s42768-025-00240-7","DOIUrl":"10.1007/s42768-025-00240-7","url":null,"abstract":"<div><p>This study investigated the long-term microbial community dynamics (nearly 200 d) in four full-scale dry anaerobic digestion (DAD) reactors and two wet anaerobic digestion (WAD) reactors for treating food waste. Compared with WAD, DAD demonstrated significantly higher operational instability under elevated concentrations of volatile fatty acids (VFAs, 8000–15000 mg/L) and total ammonia nitrogen (TAN, 5000–7500 mg/L), particularly during recovery phases following prolonged feeding interruption. 16S rRNA sequencing analysis revealed distinct microbial community structures between the two systems. In DAD, syntrophic acetate oxidation bacteria (SAOB) dominated by the genera <i>Halocella</i> and <i>DTU014</i> was significantly enriched, whereas the bacterial community in WAD was primarily characterized by <i>Defluviitoga</i>. Both systems exhibited hydrogenotrophic methanogenesis (HM) as the dominant pathway, with <i>Methanoculleus</i> being the prevalent archaeal genus in both configurations. Notably, <i>Methanobrevibacter</i> was exclusively detected in DAD. Furthermore, increasing VFA concentrations triggered a structural reorganization of microbial communities in DAD. The relative abundances of <i>Halocella</i> and <i>DTU014</i> decreased markedly under high-VFA stress, whereas <i>Methanobrevibacter</i> abundance was positively correlated with VFA accumulation. These findings highlight system-specific microbial resilience mechanisms and provide critical insights into VFA-driven community dynamics in anaerobic digestion systems. The results have practical implications for optimizing process stability and methane recovery efficiency in DAD, particularly under high organic loading or feedstock variability conditions.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"393 - 407"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy metal stabilization and alkalis neutralization in municipal solid waste incineration fly ash using acid washing coupled with chelating agents 酸洗配螯合剂对城市生活垃圾焚烧飞灰中重金属的稳定和碱中和作用

Waste Disposal & Sustainable Energy

Pub Date : 2025-07-01 DOI: 10.1007/s42768-025-00234-5

Tong Tian, Yaji Huang, Yixuan Xiao, Zhiyuan Li, Hu Pan, Zenghui Li, Qi Zhou

Heavy metal stabilization and alkali neutralization are crucial for the management of municipal solid waste incineration fly ash (MSWI FA). In this study, the effects of oxalic acid (OA) and citric acid (CA) washing on heavy metal migration and alkali changes were investigated. Besides, three agents were selected to stabilize acid-washed fly ash (FA), and the effects of heavy metal stabilization under different disposal environments and the changes in their form distributions were comparatively analyzed. The experimental results demonstrated that with increasing organic acid concentration, the amount of Cd and Pb extracted from MSWI FA increased, whereas the amount of alkalis tended to decrease. Moreover, the leaching concentration of heavy metals and the percentage of unstable forms increased after acid washing. The alkalis content in the products decreased to 7.91–8.75 after stabilization, which met the standards of hazardous waste landfills. Compared with other agents, sodium diethyldithiocarbamate (DDTC) exhibited excellent heavy metal stabilization performance. After the addition of 1% DDTC, the leaching concentrations of Cd and Pb decreased to values lower than the national standard limit. Additionally, the curing rates of Cd and Pb were greater than 98% under the two leaching conditions. With the addition of DDTC, the percentage of stable forms increased, and the percentages of stable Cd and Pb forms increased to 87.68% and 99.03%, respectively, after treatment with 2% DDTC. The above results corroborated that CA coupled with DDTC stabilization can significantly reduce Cd and Pb toxicity and neutralize alkalinity in FA.

Graphical abstract

重金属稳定和碱中和是城市生活垃圾焚烧飞灰治理的关键。本文研究了草酸（OA）和柠檬酸（CA）洗涤对重金属迁移和碱度变化的影响。选择3种药剂稳定酸洗粉煤灰（FA），对比分析不同处理环境对重金属的稳定效果及形态分布的变化。实验结果表明，随着有机酸浓度的增加，从MSWI FA中提取Cd和Pb的量增加，而碱的量有减少的趋势。此外，酸洗后重金属的浸出浓度和不稳定形态的百分比均有所增加。稳定后产品碱含量降至7.91 ~ 8.75，符合危险废物填埋标准。与其他药剂相比，二乙基二硫代氨基甲酸钠（DDTC）具有优异的重金属稳定性能。添加1% DDTC后，Cd和Pb浸出浓度降至低于国家标准限值。两种浸出条件下Cd和Pb的固化率均大于98%。随着DDTC的加入，稳定形态的比例增加，Cd和Pb稳定形态的比例在2% DDTC处理后分别增加到87.68%和99.03%。以上结果证实了CA与DDTC的联用能显著降低FA中的Cd和Pb毒性，中和FA中的碱度。图形抽象

{"title":"Heavy metal stabilization and alkalis neutralization in municipal solid waste incineration fly ash using acid washing coupled with chelating agents","authors":"Tong Tian, Yaji Huang, Yixuan Xiao, Zhiyuan Li, Hu Pan, Zenghui Li, Qi Zhou","doi":"10.1007/s42768-025-00234-5","DOIUrl":"10.1007/s42768-025-00234-5","url":null,"abstract":"<div><p>Heavy metal stabilization and alkali neutralization are crucial for the management of municipal solid waste incineration fly ash (MSWI FA). In this study, the effects of oxalic acid (OA) and citric acid (CA) washing on heavy metal migration and alkali changes were investigated. Besides, three agents were selected to stabilize acid-washed fly ash (FA), and the effects of heavy metal stabilization under different disposal environments and the changes in their form distributions were comparatively analyzed. The experimental results demonstrated that with increasing organic acid concentration, the amount of Cd and Pb extracted from MSWI FA increased, whereas the amount of alkalis tended to decrease. Moreover, the leaching concentration of heavy metals and the percentage of unstable forms increased after acid washing. The alkalis content in the products decreased to 7.91–8.75 after stabilization, which met the standards of hazardous waste landfills. Compared with other agents, sodium diethyldithiocarbamate (DDTC) exhibited excellent heavy metal stabilization performance. After the addition of 1% DDTC, the leaching concentrations of Cd and Pb decreased to values lower than the national standard limit. Additionally, the curing rates of Cd and Pb were greater than 98% under the two leaching conditions. With the addition of DDTC, the percentage of stable forms increased, and the percentages of stable Cd and Pb forms increased to 87.68% and 99.03%, respectively, after treatment with 2% DDTC. The above results corroborated that CA coupled with DDTC stabilization can significantly reduce Cd and Pb toxicity and neutralize alkalinity in FA.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 2","pages":"273 - 286"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing grounding systems: effects of agro-based biochar used as backfill materials 加强接地系统：农用生物炭作为回填材料的效果

Waste Disposal & Sustainable Energy

Pub Date : 2025-06-28 DOI: 10.1007/s42768-025-00224-7

Jemima Akoto, Solomon Nunoo, James Ransford Dankwah

Agro-waste biochar is gradually emerging as a greener and effective means of enhancing the effectiveness of grounding systems. Yet, only a few of such wastes have been empirically assessed as ground enhancing materials. In this study, field-based soil resistivity and resistance to ground (RTG) value monitoring was used to assess the potential of biochar of coconut husk, sawdust, sugarcane bagasse, and rice husk as alternate ground enhancing materials vis-a-vis their susceptibility to seasonal variation and mode of application. The result of this study shows that the applied treatments exerted significant improvement (P-value≤0.05) in soil resistance and zone of influence values with the latter ranging less than 1 m for the clayey soil and equal of more than 2 m in the sandy soil. These effects of the study treatments were significantly influenced by time. A notable finding of this study is that rainfall and high moisture results in physical breakdown of biochar. This has significant implications for the use of treatment and the mode of application of treatment. Treatment, time, and mode of application of treatment played significant and interdependent role in reducing soil resistivity. These factors contributed to over 83% improvement of RTG values. This result suggests that though treatment, time and mode of application of treatment are major factors determining the effectiveness of ground enhancing materials, other confounding variables (e.g. method of carbonizing the waste, physical and chemical properties of the biochar) are also important determinants and must engender future research.

Graphical abstract

农业废弃物生物炭正逐渐成为提高接地系统有效性的一种更环保、更有效的手段。然而，只有少数这种废物被经验地评价为增强地面的材料。本研究通过田间土壤电阻率和对地面电阻（RTG）值监测，评估了椰子壳、木屑、甘蔗渣和稻壳生物炭作为交替增土材料的潜力，以及它们对季节变化和施用方式的敏感性。本研究结果表明，施用处理对土壤阻力和影响带值均有显著改善（p值≤0.05），其中粘土土的影响带值小于1 m，砂土的影响带值大于2 m。这些研究处理的效果受时间的显著影响。本研究的一个显著发现是降雨和高湿度导致生物炭的物理分解。这对治疗的使用和治疗的应用方式具有重要意义。处理方式、处理时间和处理方式对降低土壤电阻率具有显著的相互作用。这些因素使RTG值提高了83%以上。这一结果表明，虽然处理、时间和处理的应用方式是决定土壤增强材料有效性的主要因素，但其他混杂变量（如废物碳化方法、生物炭的物理和化学性质）也是重要的决定因素，必须引起未来的研究。图形抽象

{"title":"Enhancing grounding systems: effects of agro-based biochar used as backfill materials","authors":"Jemima Akoto, Solomon Nunoo, James Ransford Dankwah","doi":"10.1007/s42768-025-00224-7","DOIUrl":"10.1007/s42768-025-00224-7","url":null,"abstract":"<div><p>Agro-waste biochar is gradually emerging as a greener and effective means of enhancing the effectiveness of grounding systems. Yet, only a few of such wastes have been empirically assessed as ground enhancing materials. In this study, field-based soil resistivity and resistance to ground (RTG) value monitoring was used to assess the potential of biochar of coconut husk, sawdust, sugarcane bagasse, and rice husk as alternate ground enhancing materials vis-a-vis their susceptibility to seasonal variation and mode of application. The result of this study shows that the applied treatments exerted significant improvement (<i>P</i>-value≤0.05) in soil resistance and zone of influence values with the latter ranging less than 1 m for the clayey soil and equal of more than 2 m in the sandy soil. These effects of the study treatments were significantly influenced by time. A notable finding of this study is that rainfall and high moisture results in physical breakdown of biochar. This has significant implications for the use of treatment and the mode of application of treatment. Treatment, time, and mode of application of treatment played significant and interdependent role in reducing soil resistivity. These factors contributed to over 83% improvement of RTG values. This result suggests that though treatment, time and mode of application of treatment are major factors determining the effectiveness of ground enhancing materials, other confounding variables (e.g. method of carbonizing the waste, physical and chemical properties of the biochar) are also important determinants and must engender future research.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"495 - 507"},"PeriodicalIF":0.0,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dye wastewater reuse: energy storage strategies for supercapacitors 染料废水再利用：超级电容器的能量储存策略

Waste Disposal & Sustainable Energy

Pub Date : 2025-06-28 DOI: 10.1007/s42768-025-00237-2

Shan Song, Rongna Chen, Tianxiao Xie, Yide Luo, Zongtai Zhou, Junshuang Zhou, Faming Gao

Supercapacitors have attracted much attention because of their fast charging and discharging characteristics, and the development of high-efficiency carbon materials plays a crucial role in improving the performance and application of supercapacitors. The strategy of “killing two birds with one stone” to achieve dye wastewater treatment and improve the pseudo-capacitance of electrode materials provides an environmentally friendly and cost-effective solution for dye wastewater treatment. This work successfully used a simple one-step hydrothermal method of attaching dye molecules to glucose-derived carbon to treat dye wastewater and effectively used the functional groups in the dye molecules. Moreover, the structural agglomeration caused by hydrothermal carbonation was resolved, and the reticulated dye molecules improved the continuity within the material and provided additional channels for ion transport. The mixture was then annealed with NH₄F at high temperature, and the NH₄F activation introduced nitrogen atoms into the carbon material, increasing the electrical conductivity of the material and etching the surface of the material, increasing the number of active sites on the material. The optimum carbon material has a specific surface area of 727.09 m² g⁻¹, and the percentage of heteroatoms increases from 5.37% to 13.87%, an increase of 158.29%. In a three-electrode system with 6 mol L⁻¹ KOH as the electrolyte and a current density of 0.5 A g⁻¹, the material shows a specific capacitance of 191.5 F g⁻¹ and good multiplicative performance (77.4% capacitance retention after increasing the current to 20 times that of 0.5 A g⁻¹) as well as stability (essentially no change in capacitance after 5000 cycles).

Graphical abstract

超级电容器因其快速充放电的特性而备受关注，而高效碳材料的开发对提高超级电容器的性能和应用具有至关重要的作用。通过“一举两得”的策略实现染料废水处理，提高电极材料的伪电容，为染料废水处理提供了一种环保、高性价比的解决方案。本工作成功地采用简单的一步水热法将染料分子附着在葡萄糖衍生碳上处理染料废水，并有效地利用了染料分子中的官能团。此外，水热碳化引起的结构团聚得到了解决，网状染料分子提高了材料内部的连续性，并为离子传递提供了额外的通道。然后用NH4F对混合物进行高温退火，NH4F活化将氮原子引入碳材料中，提高了材料的导电性，并蚀刻了材料表面，增加了材料上的活性位点数量。优化后的碳材料比表面积为727.09 m2 g−1，杂原子含量由5.37%提高到13.87%，提高了158.29%。在以6 mol L−1 KOH为电解液，电流密度为0.5 a g−1的三电极体系中，该材料的比电容为191.5 F g−1，具有良好的乘法性能（将电流增加到0.5 a g−1的20倍后电容保持率为77.4%）和稳定性（循环5000次后电容基本没有变化）。图形抽象

{"title":"Dye wastewater reuse: energy storage strategies for supercapacitors","authors":"Shan Song, Rongna Chen, Tianxiao Xie, Yide Luo, Zongtai Zhou, Junshuang Zhou, Faming Gao","doi":"10.1007/s42768-025-00237-2","DOIUrl":"10.1007/s42768-025-00237-2","url":null,"abstract":"<div><p>Supercapacitors have attracted much attention because of their fast charging and discharging characteristics, and the development of high-efficiency carbon materials plays a crucial role in improving the performance and application of supercapacitors. The strategy of “killing two birds with one stone” to achieve dye wastewater treatment and improve the pseudo-capacitance of electrode materials provides an environmentally friendly and cost-effective solution for dye wastewater treatment. This work successfully used a simple one-step hydrothermal method of attaching dye molecules to glucose-derived carbon to treat dye wastewater and effectively used the functional groups in the dye molecules. Moreover, the structural agglomeration caused by hydrothermal carbonation was resolved, and the reticulated dye molecules improved the continuity within the material and provided additional channels for ion transport. The mixture was then annealed with NH<sub>4</sub>F at high temperature, and the NH<sub>4</sub>F activation introduced nitrogen atoms into the carbon material, increasing the electrical conductivity of the material and etching the surface of the material, increasing the number of active sites on the material. The optimum carbon material has a specific surface area of 727.09 m<sup>2</sup> g<sup>−1</sup>, and the percentage of heteroatoms increases from 5.37% to 13.87%, an increase of 158.29%. In a three-electrode system with 6 mol L<sup>−1</sup> KOH as the electrolyte and a current density of 0.5 A g<sup>−1</sup>, the material shows a specific capacitance of 191.5 F g<sup>−1</sup> and good multiplicative performance (77.4% capacitance retention after increasing the current to 20 times that of 0.5 A g<sup>−1</sup>) as well as stability (essentially no change in capacitance after 5000 cycles).</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"509 - 520"},"PeriodicalIF":0.0,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative resource utilization of sludge and red mud: development of in-situ magnetic and floatable biochar for the adsorption of basic fuchsin 污泥和赤泥资源的创新利用：原位磁性和可浮性生物炭吸附碱性品红的开发

Waste Disposal & Sustainable Energy

Pub Date : 2025-06-23 DOI: 10.1007/s42768-025-00238-1

Jing Guo, Peizu Liu, Kai Cui, Dongsheng Feng, Junming Yi, Huidong Li

The development of sustainable adsorbents that integrate low-cost separation and high contaminant removal efficiency remains a critical challenge in wastewater treatment. This study engineered a sludge-based magnetic floatable particle adsorbent (SMFA-800-0.5) through synergistic co-pyrolysis of municipal sludge, red mud, and hollow glass microspheres (HGM) for the removal of basic fuchsin (BF) from dye wastewater. The results indicated that the dual-function separation approach utilizing Fe₃O₄ in situ formation from red mud (magnetization of 8.24 A·m⁻¹) enables excellent recovery efficiency, eliminating the need for external Fe precursors, while the integration of HGM provides a self-floating capability with 76% surface retention over 3 h. The sludge-derived carbon matrix, enhanced by HGM’s structural support, provides hierarchical pores with a Bruner–Emmett–Teller (BET) surface area of 57.98 m²·g⁻¹. The addition of bentonite clay effectively addresses powder dispersion issues in flow systems. This material demonstrates superior adsorption performance, achieving a capacity of 106.72 mg·g⁻¹ for BF via pseudo-first-order kinetics. The enhanced adsorption performance is driven by multi-mechanism synergies, including electrostatic attraction and pore filling. This work pioneers a “zero-external-input, dual-recovery” paradigm for sustainable dye removal.

Graphical abstract

开发低成本分离和高污染物去除效率的可持续吸附剂仍然是废水处理的关键挑战。本研究通过城市污泥、赤泥和中空玻璃微球（HGM）的协同共热解，设计了一种污泥基磁性可浮子吸附剂（SMFA-800-0.5），用于去除染料废水中的碱性紫红（BF）。结果表明，利用赤泥中原位形成的Fe3O4（磁化强度为8.24 A·m−1）的双重功能分离方法可以实现出色的回收效率，无需外部Fe前驱体，而HGM的集成提供了自漂浮能力，在3小时内表面保留率为76%。污泥衍生的碳基质在HGM的结构支持下得到增强，提供了分层孔隙，bruner - emmet - teller （BET）表面积为57.98 m2·g−1。膨润土粘土的加入有效地解决了流动系统中的粉末分散问题。该材料表现出优异的吸附性能，通过准一级动力学计算，其对BF的吸附容量为106.72 mg·g−1。吸附性能的增强是由静电吸引和孔隙填充等多机制协同作用驱动的。这项工作开创了“零外部投入，双重回收”的可持续染料去除范例。图形抽象

{"title":"Innovative resource utilization of sludge and red mud: development of in-situ magnetic and floatable biochar for the adsorption of basic fuchsin","authors":"Jing Guo, Peizu Liu, Kai Cui, Dongsheng Feng, Junming Yi, Huidong Li","doi":"10.1007/s42768-025-00238-1","DOIUrl":"10.1007/s42768-025-00238-1","url":null,"abstract":"<div><p>The development of sustainable adsorbents that integrate low-cost separation and high contaminant removal efficiency remains a critical challenge in wastewater treatment. This study engineered a sludge-based magnetic floatable particle adsorbent (SMFA-800-0.5) through synergistic co-pyrolysis of municipal sludge, red mud, and hollow glass microspheres (HGM) for the removal of basic fuchsin (BF) from dye wastewater. The results indicated that the dual-function separation approach utilizing Fe<sub>3</sub>O<sub>4</sub> in situ formation from red mud (magnetization of 8.24 A·m<sup>−1</sup>) enables excellent recovery efficiency, eliminating the need for external Fe precursors, while the integration of HGM provides a self-floating capability with 76% surface retention over 3 h. The sludge-derived carbon matrix, enhanced by HGM’s structural support, provides hierarchical pores with a Bruner–Emmett–Teller (BET) surface area of 57.98 m<sup>2</sup>·g<sup>−1</sup>. The addition of bentonite clay effectively addresses powder dispersion issues in flow systems. This material demonstrates superior adsorption performance, achieving a capacity of 106.72 mg·g<sup>−1</sup> for BF via pseudo-first-order kinetics. The enhanced adsorption performance is driven by multi-mechanism synergies, including electrostatic attraction and pore filling. This work pioneers a “zero-external-input, dual-recovery” paradigm for sustainable dye removal.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"421 - 435"},"PeriodicalIF":0.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiative properties of CuO-CoSO4 nanofluids and their performance in solar photovoltaic/thermal systems CuO-CoSO4纳米流体的辐射特性及其在太阳能光伏/热系统中的性能

Waste Disposal & Sustainable Energy

Pub Date : 2025-06-21 DOI: 10.1007/s42768-025-00241-6

Gan He, Shiquan Shan, Guijia Zhang, Haojin Wu, Zhijun Zhou

The efficient utilization of solar energy can be achieved by coupling photovoltaic (PV) and photothermal (PT) technologies to harness the full spectrum of solar radiation. In this work, a new type of CuO-CoSO₄ nanofluid was proposed, and its performance in a photovoltaic/thermal (PV/T) system was studied. CuO-CoSO₄ nanofluids with different concentrations were prepared by two-step method, and their optical properties and stability were characterized. The experimental results show that the 50 mg/L CuO-CoSO₄ nanofluid has high transmittance in the ideal optical window of silicon cells (650–1040 nm), with an average transmittance of 67.58%, and higher absorptivity in the short waveband and infrared bands (280–650 nm and 1040–2500 nm), with an average absorptance of 68.52%, effectively realizing spectrum splitting. By establishing a performance analysis model for the nanofluid-based spectral splitting PV/T system, the electrical efficiency, thermal efficiency and total efficiency of the system at different concentrations were calculated, and the Merit function (MF) was introduced to comprehensively evaluate the system performance. The results show that the CuO-CoSO₄ nanofluid has the best spectral splitting performance when the CuO concentration is 50 mg/L. The system achieves an electrical efficiency of 14.46%, a thermal efficiency of 37.60%, and a system efficiency of 52.06%. The MF value reaches 1.2851, indicating a 28.51% improvement over traditional PV systems. This study provides a theoretical basis for the practical application and optimization of nanofluids in PV/T systems.

Graphical abstract

太阳能的有效利用可以通过耦合光伏（PV）和光热（PT）技术来实现，以利用太阳辐射的全光谱。本文提出了一种新型CuO-CoSO4纳米流体，并对其在光伏/热（PV/T）系统中的性能进行了研究。采用两步法制备了不同浓度的CuO-CoSO4纳米流体，并对其光学性质和稳定性进行了表征。实验结果表明，50 mg/L的CuO-CoSO4纳米流体在硅电池的理想光学窗口（650 ~ 1040 nm）具有较高的透过率，平均透过率为67.58%；在短波段和红外波段（280 ~ 650 nm和1040 ~ 2500 nm）具有较高的吸收率，平均吸收率为68.52%，有效实现了分光。通过建立纳米流体分光PV/T系统的性能分析模型，计算不同浓度下系统的电效率、热效率和总效率，并引入功绩函数（Merit function， MF）对系统性能进行综合评价。结果表明，当CuO浓度为50 mg/L时，CuO- coso4纳米流体的分光性能最佳。系统的电效率为14.46%，热效率为37.60%，系统效率为52.06%。MF值达到1.2851，比传统光伏系统提高了28.51%。该研究为纳米流体在PV/T系统中的实际应用和优化提供了理论依据。图形抽象

{"title":"Radiative properties of CuO-CoSO4 nanofluids and their performance in solar photovoltaic/thermal systems","authors":"Gan He, Shiquan Shan, Guijia Zhang, Haojin Wu, Zhijun Zhou","doi":"10.1007/s42768-025-00241-6","DOIUrl":"10.1007/s42768-025-00241-6","url":null,"abstract":"<div><p>The efficient utilization of solar energy can be achieved by coupling photovoltaic (PV) and photothermal (PT) technologies to harness the full spectrum of solar radiation. In this work, a new type of CuO-CoSO<sub>4</sub> nanofluid was proposed, and its performance in a photovoltaic/thermal (PV/T) system was studied. CuO-CoSO<sub>4</sub> nanofluids with different concentrations were prepared by two-step method, and their optical properties and stability were characterized. The experimental results show that the 50 mg/L CuO-CoSO<sub>4</sub> nanofluid has high transmittance in the ideal optical window of silicon cells (650–1040 nm), with an average transmittance of 67.58%, and higher absorptivity in the short waveband and infrared bands (280–650 nm and 1040–2500 nm), with an average absorptance of 68.52%, effectively realizing spectrum splitting. By establishing a performance analysis model for the nanofluid-based spectral splitting PV/T system, the electrical efficiency, thermal efficiency and total efficiency of the system at different concentrations were calculated, and the Merit function (MF) was introduced to comprehensively evaluate the system performance. The results show that the CuO-CoSO<sub>4</sub> nanofluid has the best spectral splitting performance when the CuO concentration is 50 mg/L. The system achieves an electrical efficiency of 14.46%, a thermal efficiency of 37.60%, and a system efficiency of 52.06%. The MF value reaches 1.2851, indicating a 28.51% improvement over traditional PV systems. This study provides a theoretical basis for the practical application and optimization of nanofluids in PV/T systems.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 3","pages":"409 - 420"},"PeriodicalIF":0.0,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomedical waste management: navigating the challenges to achieve the promise of sustainable development goal 3 生物医学废物管理：应对挑战，实现可持续发展目标3的承诺

Waste Disposal & Sustainable Energy

Pub Date : 2025-06-20 DOI: 10.1007/s42768-025-00231-8

Varsha Prakash Shetty, Sadanand Dangari Akshay, Barani Devi Thilai, Vijaya Kumar Deekshit

The United Nations has endorsed the sustainable development goals (SDGs), which has necessitated decades of efforts by countries worldwide to attain the principal goals by 2030. The primary objective is to achieve SDG 3, which aims to prevent the spread of antimicrobial resistance and diseases caused by biomedical waste (BMW), including acquired immunodeficiency syndrome, hepatitis, tuberculosis, and other communicable diseases. Targets 3.3 and 3.9 of SDG 3 significantly emphasize mitigating global health concerns to alleviate the burden on healthcare systems. Considering the enormous quantities of BMW generated by these systems, the safe disposal of BMW requires special attention. BMW management presents a multitude of challenges for both developed and underdeveloped countries, especially South Asian Association for Regional Cooperation (SAARC) countries, where rapid urbanization, high population densities, and expanding healthcare services have contributed to a significant increase in BMW generation. According to official statistics, approximately 884.1 t of BMW are generated daily by the SAARC countries, particularly India, which generates the largest quantities of BMW (619 t/d), highlighting the urgent need for action to resolve the issue of proper BMW disposal. Severe policy gridlock, limited surveillance data, inadequate oversight, and insufficient caution regarding BMW disposal pose a significant threat to humans, animals, and the environment. The direct disposal of antibiotic medications into the soil and surface water bodies has resulted in the proliferation of antibiotic-resistant bacteria, which decreases the effectiveness of available treatments. This review assessed the progress made by SAARC countries in achieving SDG 3 by examining the various environmental and human health effects associated with BMW, with the objective of improving BMW management.

Graphical abstract

联合国已经批准了可持续发展目标（sdg），世界各国需要数十年的努力才能在2030年之前实现主要目标。主要目标是实现可持续发展目标3，其目的是防止抗菌素耐药性和由生物医学废物（BMW）引起的疾病的传播，包括获得性免疫缺陷综合征、肝炎、结核病和其他传染病。可持续发展目标3的具体目标3.3和3.9显著强调减轻全球卫生问题，以减轻卫生保健系统的负担。考虑到这些系统产生的大量宝马，宝马的安全处置需要特别注意。宝马的管理对发达国家和不发达国家都提出了许多挑战，特别是南亚区域合作联盟（SAARC）国家，在这些国家，快速的城市化、高人口密度和不断扩大的医疗保健服务导致宝马一代的显著增加。根据官方统计，南盟国家每天大约生产884.1吨宝马，尤其是印度，其生产的宝马数量最多（619吨/天），这凸显了采取行动解决妥善处理宝马问题的迫切需要。严重的政策僵局、有限的监测数据、不充分的监督以及对宝马处理的不谨慎，对人类、动物和环境构成了重大威胁。将抗生素药物直接排入土壤和地表水导致耐药细菌的繁殖，从而降低了现有治疗方法的有效性。本次审查评估了南盟国家在实现可持续发展目标3方面取得的进展，审查了与宝马有关的各种环境和人类健康影响，目的是改善宝马的管理。图形抽象

{"title":"Biomedical waste management: navigating the challenges to achieve the promise of sustainable development goal 3","authors":"Varsha Prakash Shetty, Sadanand Dangari Akshay, Barani Devi Thilai, Vijaya Kumar Deekshit","doi":"10.1007/s42768-025-00231-8","DOIUrl":"10.1007/s42768-025-00231-8","url":null,"abstract":"<div><p>The United Nations has endorsed the sustainable development goals (SDGs), which has necessitated decades of efforts by countries worldwide to attain the principal goals by 2030. The primary objective is to achieve SDG 3, which aims to prevent the spread of antimicrobial resistance and diseases caused by biomedical waste (BMW), including acquired immunodeficiency syndrome, hepatitis, tuberculosis, and other communicable diseases. Targets 3.3 and 3.9 of SDG 3 significantly emphasize mitigating global health concerns to alleviate the burden on healthcare systems. Considering the enormous quantities of BMW generated by these systems, the safe disposal of BMW requires special attention. BMW management presents a multitude of challenges for both developed and underdeveloped countries, especially South Asian Association for Regional Cooperation (SAARC) countries, where rapid urbanization, high population densities, and expanding healthcare services have contributed to a significant increase in BMW generation. According to official statistics, approximately 884.1 t of BMW are generated daily by the SAARC countries, particularly India, which generates the largest quantities of BMW (619 t/d), highlighting the urgent need for action to resolve the issue of proper BMW disposal. Severe policy gridlock, limited surveillance data, inadequate oversight, and insufficient caution regarding BMW disposal pose a significant threat to humans, animals, and the environment. The direct disposal of antibiotic medications into the soil and surface water bodies has resulted in the proliferation of antibiotic-resistant bacteria, which decreases the effectiveness of available treatments. This review assessed the progress made by SAARC countries in achieving SDG 3 by examining the various environmental and human health effects associated with BMW, with the objective of improving BMW management.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"7 2","pages":"303 - 321"},"PeriodicalIF":0.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0