Bioresource Technology最新文献

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Revealed mechanism of 3D-open-microarray boosting exoelectrogens Geobacter enrichment and extracellular electron transfer for high power generation in microbial fuel cells

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-08 DOI: 10.1016/j.biortech.2025.132049

Da Liu, Chao-qun Xu, Wen-kai Fang, Cheng-yu Li

Theanode enables raised microbial fuel cells (MFCs) performance via in-situ growth electroactive material. However, the role of fabricated microstructures in electroactive bacteria loading and extracellular electron transfer (EET) has been paid less attention. Here, MoS2 nanosheets are custom grown on carbon cloth to construct anode models with diverse surface microstructures. Surprisingly, the 3D-MoS2/NS-CC anode only 0.85 d enables the MFC to be started and achieves a maximum power density of 3.85 W/m2, which is significantly faster and higher than that of 2D-MoS2/NS-CC (3.6 d, 2.75 W/m2) and CC (4.46 d, 1.98 W/m2). As for the mechanism of 3D-MoS2/NSCCboosting MFC performance, this is attributed to the 3D-open-microarray preventing electroactive bacteria from shedding and facilitating to the establishment of excellent EET channels through the formed hybrid cell-electrode systems and Geobacter enrichment of up to 86.1 %. This research provides promising guidance for integrating nanomaterials and architecture to construct high-performance anodes in MFCs.

{"title":"Revealed mechanism of 3D-open-microarray boosting exoelectrogens Geobacter enrichment and extracellular electron transfer for high power generation in microbial fuel cells","authors":"Da Liu, Chao-qun Xu, Wen-kai Fang, Cheng-yu Li","doi":"10.1016/j.biortech.2025.132049","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132049","url":null,"abstract":"The<ce:hsp sp=\"0.25\"></ce:hsp>anode enables raised microbial fuel cells (MFCs) performance via in-situ growth electroactive material. However, the role of fabricated microstructures in electroactive bacteria loading and extracellular electron transfer (EET) has been paid less attention. Here, MoS2 nanosheets are custom grown on carbon cloth to construct anode models with diverse surface microstructures. Surprisingly, the 3D-MoS2/NS-CC anode only 0.85 d enables the MFC to be started and achieves a maximum power density of 3.85 W/m<ce:sup loc=\"post\">2</ce:sup>, which is significantly faster and higher than that of 2D-MoS2/NS-CC (3.6 d, 2.75 W/m<ce:sup loc=\"post\">2</ce:sup>) and CC (4.46 d, 1.98 W/m<ce:sup loc=\"post\">2</ce:sup>). As for the mechanism of 3D-MoS2/NSCC<ce:hsp sp=\"0.25\"></ce:hsp>boosting MFC performance, this is attributed to the 3D-open-microarray preventing electroactive bacteria from shedding and facilitating to the establishment of excellent EET channels through the formed hybrid cell-electrode systems and Geobacter enrichment of up to 86.1 %. This research provides promising guidance for integrating nanomaterials and architecture to construct high-performance anodes in MFCs.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"24 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flow-electrode capacitive deionization for enhanced selective separation of ammonia, phosphorus, and caproate from sewage sludge fermentation: Performance and mechanistic insights

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-08 DOI: 10.1016/j.biortech.2025.132048

Huimin Sun, Pengyao Wang, Xuedong Zhang, Bo Wu, Minhua Cui, Hongbo Liu, Mustafa Evren Ersahin, Hale Ozgun, He Liu

Caproic acid has broad applications and can be produced from activated sludge via fermentation, but its quality is hindered by ammonia (NH4+-N) and reactive phosphorus (RP) in the fermentation broth. However, flow-electrode capacitive deionization (FCDI), a novel ion separation technology that operates continuously without secondary pollution seems to be an efficient process that separates the ions. The results showed that at pH 5.0, the majority of N and P presented as NH4+ and H2PO4-, with removal efficiencies of 59.5 % for NH4+-N, 49.5 % for RP, and 17.4 % for caproate. Higher caproate concentrations increased boundary layer thickness, thereby promoting caproate transport to compensate for the ions consumed. The anion exchange membrane exhibited stronger rejection of divalent phosphate than acetate and caproate, resulting in lower HPO42− selectivity. The FCDI holds potential as a viable technology for resource recovery from fermentation broth, offering an alternative method in bioprocessing applications.

{"title":"Flow-electrode capacitive deionization for enhanced selective separation of ammonia, phosphorus, and caproate from sewage sludge fermentation: Performance and mechanistic insights","authors":"Huimin Sun, Pengyao Wang, Xuedong Zhang, Bo Wu, Minhua Cui, Hongbo Liu, Mustafa Evren Ersahin, Hale Ozgun, He Liu","doi":"10.1016/j.biortech.2025.132048","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132048","url":null,"abstract":"Caproic acid has broad applications and can be produced from activated sludge via fermentation, but its quality is hindered by ammonia (NH<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">+</ce:sup>-N) and reactive phosphorus (RP) in the fermentation broth. However, flow-electrode capacitive deionization (FCDI), a novel ion separation technology that operates continuously without secondary pollution seems to be an efficient process that separates the ions. The results showed that at pH 5.0, the majority of N and P presented as NH<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">+</ce:sup> and H<ce:inf loc=\"post\">2</ce:inf>PO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">-</ce:sup>, with removal efficiencies of 59.5 % for NH<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">+</ce:sup>-N, 49.5 % for RP, and 17.4 % for caproate. Higher caproate concentrations increased boundary layer thickness, thereby promoting caproate transport to compensate for the ions consumed. The anion exchange membrane exhibited stronger rejection of divalent phosphate than acetate and caproate, resulting in lower HPO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">2−</ce:sup> selectivity. The FCDI holds potential as a viable technology for resource recovery from fermentation broth, offering an alternative method in bioprocessing applications.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"110 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fish waste biorefinery: A novel approach to promote industrial sustainability

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-08 DOI: 10.1016/j.biortech.2025.132050

Javaeria Maqsood Gill, Syed Makhdoom Hussain, Shafaqat Ali, Abdul Ghafoor, Muhammad Adrees, Nadia Nazish, Adan Naeem, Eman Naeem, Mohammed Ali Alshehri, Eram Rashid

In pursuit of sustainability and resource efficiency, concept of the circular economy has emerged as a promising framework for industries worldwide. The global fish processing industry generates a significant amount of waste, posing environmental challenges and economic inefficiencies. The substantial volume of fish waste generated globally along with its environmental impact highlights the urgent need to adopt sustainable practices. However, there is significant transformative potential in leveraging fish processing waste to generate industrial value. There are numerous applications of fish processing waste such as extraction of enzymes, protein hydrolysates, collagen, and gelatin. Moreover, the capacity of fish waste to generate chitin, fish oil, and biofuels foresees a future for sustainable resource management. However, it is also necessary to emphasize the need for innovation, and cross-sector collaboration to unlock this potential. While challenges lie ahead, this review explores transformative power of circular economy in reshaping the fisheries industry towards more sustainable future.

{"title":"Fish waste biorefinery: A novel approach to promote industrial sustainability","authors":"Javaeria Maqsood Gill, Syed Makhdoom Hussain, Shafaqat Ali, Abdul Ghafoor, Muhammad Adrees, Nadia Nazish, Adan Naeem, Eman Naeem, Mohammed Ali Alshehri, Eram Rashid","doi":"10.1016/j.biortech.2025.132050","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132050","url":null,"abstract":"In pursuit of sustainability and resource efficiency, concept of the circular economy has emerged as a promising framework for industries worldwide. The global fish processing industry generates a significant amount of waste, posing environmental challenges and economic inefficiencies. The substantial volume of fish waste generated globally along with its environmental impact highlights the urgent need to adopt sustainable practices. However, there is significant transformative potential in leveraging fish processing waste to generate industrial value. There are numerous applications of fish processing waste such as extraction of enzymes, protein hydrolysates, collagen, and gelatin. Moreover, the capacity of fish waste to generate chitin, fish oil, and biofuels foresees a future for sustainable resource management. However, it is also necessary to emphasize the need for innovation, and cross-sector collaboration to unlock this potential. While challenges lie ahead, this review explores transformative power of circular economy in reshaping the fisheries industry towards more sustainable future.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"15 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applicability of intI1 as an indicator gene for securing the removal efficiency of extracellular antimicrobial resistance genes in full-scale wastewater treatment plants.

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-08 DOI: 10.1016/j.biortech.2025.132047

Rongxuan Wang, Mardalisa, Hiroe Hara-Yamamura, Norihisa Matsuura, Ryo Honda

Mitigating the release of extracellular antimicrobial resistance genes (exARGs) from wastewater treatment plants (WWTPs) is crucial for preventing the spread of antimicrobial resistance from human domains into the environment. This study aimed to evaluate the applicability of intI1 as a performance indicator for securing the removal of exARGs at WWTPs. We investigated the reduction of exARGs and intI1 in a full-scale WWTP, where identical wastewater was treated using conventional activated sludge (CAS) and membrane bioreactor (MBR) systems. The log reduction values (LRVs) for exARGs were lower than those for intracellular ARGs (iARGs) across all ARG species and treatment systems. LRVs for exARGs were consistently higher in the MBR than in the CAS. The intI1 exhibited lower LRVs compared to most exARGs, ensuring a minimum LRV of exARG in both CAS and MBR systems. Consequently, intI1 is an effective indicator gene for securing the removal of exARGs.

引用次数: 0

Sequential catalysis enables efficient pyrolysis of food waste for syngas production

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-07 DOI: 10.1016/j.biortech.2025.132042

Jintao Xu, Ziyang Guo, Xiefei Zhu, Xiao Chen, Zejun Luo, Chunbao Charles Xu, Weihong Li

Thermochemical conversion technologies are emerging as one of the most promising approaches to tackle food waste crisis. However, the existing techniques confront significant challenges in terms of syngas selectivity and catalyst stability. This study introduced a cost-effective Joule heating approach utilizing sequential catalysts composed of treated stainless steel (SS) and biochar to optimize syngas production from food waste. This system achieved a syngas yield of 17.64 mmol⋅grice−1, marking a 76.40 % improvement over conventional thermal pyrolysis. The molar ratio of hydrogen (H2) to carbon monoxide (CO) was adjustable from 0.36 to 0.94, offering flexibility for different applications. Over five cycles, the system maintained robust catalytic stability, with only a 9.70 % decrease in syngas yield. Furthermore, the sequential catalysts proved versatile across diverse food wastes, achieving a maximum selectivity of 87.99 vol%. This approach enhanced catalyst activity and stability by promoting the sequential cracking of large oxygenates and reforming small molecules.

{"title":"Sequential catalysis enables efficient pyrolysis of food waste for syngas production","authors":"Jintao Xu, Ziyang Guo, Xiefei Zhu, Xiao Chen, Zejun Luo, Chunbao Charles Xu, Weihong Li","doi":"10.1016/j.biortech.2025.132042","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132042","url":null,"abstract":"Thermochemical conversion technologies are emerging as one of the most promising approaches to tackle food waste crisis. However, the existing techniques confront significant challenges in terms of syngas selectivity and catalyst stability. This study introduced a cost-effective Joule heating approach utilizing sequential catalysts composed of treated stainless steel (SS) and biochar to optimize syngas production from food waste. This system achieved a syngas yield of 17.64 mmol⋅g<ce:inf loc=\"post\">rice</ce:inf><ce:sup loc=\"post\">−1</ce:sup>, marking a 76.40 % improvement over conventional thermal pyrolysis. The molar ratio of hydrogen (H<ce:inf loc=\"post\">2</ce:inf>) to carbon monoxide (CO) was adjustable from 0.36 to 0.94, offering flexibility for different applications. Over five cycles, the system maintained robust catalytic stability, with only a 9.70 % decrease in syngas yield. Furthermore, the sequential catalysts proved versatile across diverse food wastes, achieving a maximum selectivity of 87.99 vol%. This approach enhanced catalyst activity and stability by promoting the sequential cracking of large oxygenates and reforming small molecules.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"1 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response of wastewater treatment performance and bacterial community to original and aged polyvinyl chloride microplastics in sequencing batch reactors

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-06 DOI: 10.1016/j.biortech.2025.132044

Menglong Li, Yizhen Cao, Xiaojing Yang, Jiawei He, Hao Zhou, Jingjing Zhan, Xuwang Zhang

Microplastics (MPs) are prevalent in wastewater treatment systems, and their behavior is further complicated after undergoing aging processes. This study explored the impact of original and aged polyvinyl chloride (PVC) MPs on wastewater treatment performance and bacterial communities. Results revealed that Fenton-aging treatment induced surface roughening of the MPs and altered their chemical properties. Prolonged exposure to original and aged PVC MPs severely inhibited the removal of chemical oxygen demand and NH4+-N, along with lower sludge concentrations. Additionally, PVC MPs increased the production of loosely-bound extracellular polymeric substances (EPS) and decreased protein levels in tightly-bound fractions. The presence of PVC MPs also shifted the bacterial community, reducing nitrogen removal bacteria while enriching EPS-forming bacteria. Furthermore, exposure to PVC MPs led to a decrease in the abundance of key genes involved in nitrogen metabolism. These findings offer insights into the effects of MPs, especially aged variants, on wastewater treatment processes.

{"title":"Response of wastewater treatment performance and bacterial community to original and aged polyvinyl chloride microplastics in sequencing batch reactors","authors":"Menglong Li, Yizhen Cao, Xiaojing Yang, Jiawei He, Hao Zhou, Jingjing Zhan, Xuwang Zhang","doi":"10.1016/j.biortech.2025.132044","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132044","url":null,"abstract":"Microplastics (MPs) are prevalent in wastewater treatment systems, and their behavior is further complicated after undergoing aging processes. This study explored the impact of original and aged polyvinyl chloride (PVC) MPs on wastewater treatment performance and bacterial communities. Results revealed that Fenton-aging treatment induced surface roughening of the MPs and altered their chemical properties. Prolonged exposure to original and aged PVC MPs severely inhibited the removal of chemical oxygen demand and NH<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">+</ce:sup>-N, along with lower sludge concentrations. Additionally, PVC MPs increased the production of loosely-bound extracellular polymeric substances (EPS) and decreased protein levels in tightly-bound fractions. The presence of PVC MPs also shifted the bacterial community, reducing nitrogen removal bacteria while enriching EPS-forming bacteria. Furthermore, exposure to PVC MPs led to a decrease in the abundance of key genes involved in nitrogen metabolism. These findings offer insights into the effects of MPs, especially aged variants, on wastewater treatment processes.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"13 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142936027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards sustainable spirulina farming: Enhancing productivity and biosafety with a salinity-biostimulants strategy

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-06 DOI: 10.1016/j.biortech.2025.132043

Chunli Yu, Jiahui Zheng, Yuqin Zhang, Yao Hu, Wei Luo, Jing Zhang, Jianfeng Yu, Jin Liu, Peter J. Nixon, Wenguang Zhou, Shengxi Shao

Arthrospira platensis (spirulina) is pivotal to the global microalgae industry, valued for its nutritional and bioactive properties. However, its sustainable production is challenged by freshwater scarcity and biological contaminants. This study introduces a salinity-biostimulants strategy to adapt a freshwater spirulina strain, CBD05, to near-seawater salinity (3 %). Exogenous glycine betaine (GB) and nitric oxide (NO), typical salinity enhancers, improved biomass productivity (0.36 g L−1 d−1), C-phycocyanin (C-PC) yield (83 mg L−1 d−1), and the economic output-to-input ratio was significantly enhanced. Metabolomic analysis linked salt tolerance to elevated amino acid accumulation, protein synthesis, and glycolysis, while transcriptional evidence highlighted enhanced carbon fixation and nitrogen assimilation towards C-PC synthesis upon addition of GB and NO. This strategy also demonstrated high resistance to Microcystis aeruginosa, a common contaminant in open systems. It provides a sustainable and cost-effective approach for industry-oriented spirulina production in freshwater-limited regions.

{"title":"Towards sustainable spirulina farming: Enhancing productivity and biosafety with a salinity-biostimulants strategy","authors":"Chunli Yu, Jiahui Zheng, Yuqin Zhang, Yao Hu, Wei Luo, Jing Zhang, Jianfeng Yu, Jin Liu, Peter J. Nixon, Wenguang Zhou, Shengxi Shao","doi":"10.1016/j.biortech.2025.132043","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132043","url":null,"abstract":"<ce:italic>Arthrospira platensis</ce:italic> (spirulina) is pivotal to the global microalgae industry, valued for its nutritional and bioactive properties. However, its sustainable production is challenged by freshwater scarcity and biological contaminants. This study introduces a salinity-biostimulants strategy to adapt a freshwater spirulina strain, CBD05, to near-seawater salinity (3 %). Exogenous glycine betaine (GB) and nitric oxide (NO), typical salinity enhancers, improved biomass productivity (0.36 g L<ce:sup loc=\"post\">−</ce:sup>1 d<ce:sup loc=\"post\">−</ce:sup>1), C-phycocyanin (C-PC) yield (83 mg L<ce:sup loc=\"post\">−</ce:sup>1 d<ce:sup loc=\"post\">−</ce:sup>1), and the economic output-to-input ratio was significantly enhanced. Metabolomic analysis linked salt tolerance to elevated amino acid accumulation, protein synthesis, and glycolysis, while transcriptional evidence highlighted enhanced carbon fixation and nitrogen assimilation towards C-PC synthesis upon addition of GB and NO. This strategy also demonstrated high resistance to <ce:italic>Microcystis aeruginosa</ce:italic>, a common contaminant in open systems. It provides a sustainable and cost-effective approach for industry-oriented spirulina production in freshwater-limited regions.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"39 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimisation of activated carbon from fruit stones and shells derived via molten salt activation for dye removal.

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-05 DOI: 10.1016/j.biortech.2025.132040

Jonas De Smedt, Pablo J Arauzo, Frederik Ronsse

Recent advancements in activated carbon production involve molten salt activation using a eutectic mixture of ZnCl₂-NaCl-KCl. This study explores the production of activated carbon from fruit waste, specifically walnut shells, using a 60:20:20 mol % eutectic mixture. Optimal conditions were identified through response surface methodology, with 400 °C and a salt-to-biomass ratio of 10 g/g, yielding a surface area of 276 m²/g. These conditions were applied to cherry, olive, and plum stones, with plum stones achieving the highest surface area of 351 m²/g. Characterization was performed through elemental and proximate analysis, gas adsorption (N₂, CO₂), and chemical adsorption of iodine and dyes. Despite some substandard qualities, the study highlights a unique mesoporous pore size distribution, with all samples exhibiting a distinct peak around 22 nm, a characteristic feature of the eutectic salt mixture used.

引用次数: 0

Microbially mediated iron redox processes for carbon and nitrogen removal from wastewater: Recent advances

IF 11.4 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-05 DOI: 10.1016/j.biortech.2025.132041

Qing Xia, Qingzhen Qiu, Jun Cheng, Wenli Huang, Xuesong Yi, Fei Yang, Weiwei Huang

Iron is the most abundant redox-active metal on Earth. The microbially mediated iron redox processes, including dissimilatory iron reduction (DIR), ammonium oxidation coupled with Fe(III) reduction (Feammox), Fe(III) dependent anaerobic oxidation of methane (Fe(III)-AOM), nitrate-reducing Fe(II) oxidation (NDFO), and Fe(II) dependent dissimilatory nitrate reduction to ammonium (Fe(II)-DNRA), play important parts in carbon and nitrogen biogeochemical cycling globally. In this review, the reaction mechanisms, electron transfer pathways, functional microorganisms, and characteristics of these processes are summarized; the prospective applications for carbon and nitrogen removal from wastewater are reviewed and discussed; and the research gaps and future directions of these processes for the treatment of wastewater are also underlined. This review is expected to give new insights into the development of economic and environmentally friendly iron-based wastewater treatment procedures.

引用次数: 0

Sustainable aviation fuel (SAF) from lignin: Pathways, catalysts, and challenges.

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology

Pub Date : 2025-01-04 DOI: 10.1016/j.biortech.2025.132039

Xianqing Lv, Chengke Zhao, Ning Yan, Xinbing Ma, Shixing Feng, Li Shuai

The aviation industry plays a crucial role in global trade and cultural exchange, but it faces significant challenges due to high production cost and environmental impacts. To achieve carbon neutrality, promoting the development of sustainable aviation fuel (SAF) is essential, with projections indicating that 65% of emissions reductions in the aviation industry by 2050 will come from the use of SAF. Lignin, as an abundant renewable resource, has great potential for conversion into aviation fuel components. It can be depolymerized and/or hydrodeoxygenated (HDO) to produce C6-C9 alkanes. However, to produce high-density SAF, lignin monomers need to undergo coupling, alkylation, and transalkylation reactions to extend the carbon chain to C8-C16 precursors, which can then be converted into long-chain alkanes suitable for SAF through HDO reactions. This paper reviews the research progress on synthesis of lignin-based SAF, highlights key synthetic methods, and analyzes how catalyst and reaction conditions affect the synthesis pathways, efficiency, and properties of SAF. Additionally, the obstacles and challenges hindering the development of biomass-based SAFs are discussed to provide theoretical support for future research in this field.

{"title":"Sustainable aviation fuel (SAF) from lignin: Pathways, catalysts, and challenges.","authors":"Xianqing Lv, Chengke Zhao, Ning Yan, Xinbing Ma, Shixing Feng, Li Shuai","doi":"10.1016/j.biortech.2025.132039","DOIUrl":"https://doi.org/10.1016/j.biortech.2025.132039","url":null,"abstract":"<p><p>The aviation industry plays a crucial role in global trade and cultural exchange, but it faces significant challenges due to high production cost and environmental impacts. To achieve carbon neutrality, promoting the development of sustainable aviation fuel (SAF) is essential, with projections indicating that 65% of emissions reductions in the aviation industry by 2050 will come from the use of SAF. Lignin, as an abundant renewable resource, has great potential for conversion into aviation fuel components. It can be depolymerized and/or hydrodeoxygenated (HDO) to produce C6-C9 alkanes. However, to produce high-density SAF, lignin monomers need to undergo coupling, alkylation, and transalkylation reactions to extend the carbon chain to C8-C16 precursors, which can then be converted into long-chain alkanes suitable for SAF through HDO reactions. This paper reviews the research progress on synthesis of lignin-based SAF, highlights key synthetic methods, and analyzes how catalyst and reaction conditions affect the synthesis pathways, efficiency, and properties of SAF. Additionally, the obstacles and challenges hindering the development of biomass-based SAFs are discussed to provide theoretical support for future research in this field.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"419 ","pages":"132039"},"PeriodicalIF":9.7,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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