Pub Date : 2024-10-03DOI: 10.1016/j.hazadv.2024.100484
Christian Vogel, Philipp Roesch, Philipp Wittwer, Thomas Sommerfeld, Maren Riedel, Peter Leube, Ute Kalbe, Ute Schoknecht, Franz-Georg Simon
Per- and polyfluoroalkyl substances (PFAS) are often environmentally exposed via discharge through human consumer products, such as ski waxes. In our study we analyzed various ski waxes from the 1980s and 2020s, to determine both the sum parameter values total fluorine (TF), extractable organically bound fluorine (EOF), hydrolysable organically bound fluorine (HOF) as well as targeted PFAS analysis. This showed that modern high-performance waxes contain up to 6 % TF, but also PFAS-free labelled ski waxes contain traces of PFAS with EOF/HOF values in the low mg kg-1 range. With the ban of all fluorine-based waxes with the start of the 2023/2024 winter season this will probably change soon. Moreover, we applied our analysis methods to snow samples from a frequently used cross country ski trail (Kammloipe) in the Ore Mountain region in Germany, assessing the potential PFAS entry/discharge through ski waxes. Melted snow samples from different spots were analyzed by the adsorbable organically bound fluorine (AOF) sum parameter and PFAS target analysis and confirmed the abrasion of the ski waxes into the snow. Moreover, on a PFAS hotspot also soil samples were analyzed, which indicate that PFAS from the ski waxes adsorb after snow melting into the soil.
{"title":"Per- and polyfluoroalkyl substances (PFAS) in Ski waxes and snow from cross-country skiing in Germany - Comparative study of sum parameter and target analysis","authors":"Christian Vogel, Philipp Roesch, Philipp Wittwer, Thomas Sommerfeld, Maren Riedel, Peter Leube, Ute Kalbe, Ute Schoknecht, Franz-Georg Simon","doi":"10.1016/j.hazadv.2024.100484","DOIUrl":"10.1016/j.hazadv.2024.100484","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) are often environmentally exposed via discharge through human consumer products, such as ski waxes. In our study we analyzed various ski waxes from the 1980s and 2020s, to determine both the sum parameter values total fluorine (TF), extractable organically bound fluorine (EOF), hydrolysable organically bound fluorine (HOF) as well as targeted PFAS analysis. This showed that modern high-performance waxes contain up to 6 % TF, but also PFAS-free labelled ski waxes contain traces of PFAS with EOF/HOF values in the low mg kg<sup>-1</sup> range. With the ban of all fluorine-based waxes with the start of the 2023/2024 winter season this will probably change soon. Moreover, we applied our analysis methods to snow samples from a frequently used cross country ski trail (Kammloipe) in the Ore Mountain region in Germany, assessing the potential PFAS entry/discharge through ski waxes. Melted snow samples from different spots were analyzed by the adsorbable organically bound fluorine (AOF) sum parameter and PFAS target analysis and confirmed the abrasion of the ski waxes into the snow. Moreover, on a PFAS hotspot also soil samples were analyzed, which indicate that PFAS from the ski waxes adsorb after snow melting into the soil.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100484"},"PeriodicalIF":5.4,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-02DOI: 10.1016/j.hazadv.2024.100490
Hyunsoo Kim , Eunji Myung , Nagchoul Choi , Kanghee Cho
Arsenic contamination in surface waters and groundwater affects millions of people on a daily basis. Oxidation of As(III) to less toxic As(V) is a widely used strategy to enhance the removal of As from solution. This study developed and evaluated a Fe-modified biochar (FeSP600). Spirulina platensis (SP) is one of the most promising microalgae because of its physicochemical properties and potential applications. The high N content of SP may affect the physicochemical properties of the biochar, which could be used as an inherent N source for N doping biochar by carbonization. After Fe modification, the formed Fe species and N-containing components of SP were used to introduce pyridinic N, which can be coordinated with Fe to form Fe-N. We demonstrated that the formed Fe species (Fe0, Fe2+ and Fe3+) and the defective structures in FeSP600 could act as active sites for surface catalytic reactions. FeSP600 not only had magnetic properties but also could effectively remove As from an aqueous solution. These properties were attributed to the release of Fe2+ and the reactive oxygen species (ROSs) generated by the γ-Fe2O3 particles on the crystalline defect structure. As(III) and As(V) removal were affected by the initial pH values. The removal efficiencies for As(III) increased from 57.2 % to 94.9 % as the pH increased from 3 to 9, whereas that for As(V) decreased from 80.1 % to 46.8 %. The presence of coexisting ions either completely () or partially (, and ) inhibited As removal. The removal of As(V) depended on electrostatic interactions, but As(III) removal was a complex process, including both oxidation and surface adsorption, as the ROSs were able to oxidize As(III) to As(V). Our study demonstrates that FeSP600 has properties that are beneficial for the removal of As(III) and As(V) from aqueous environments. The findings of this study have potential for real-world application in treating As-contaminated water sources, particularly in improving drinking water purification systems in developing countries. More importantly, an assessment of the impact of FeSP600 usage on aquatic ecosystems is required to ensure the safe application of this technology. Therefore, developing methods for mass production of FeSP600 is essential for the commercialization of this technology, necessitating process engineering studies in this area.
{"title":"Removal of arsenic from aqueous solution using magnetic biochar derived from Spirulina platensis","authors":"Hyunsoo Kim , Eunji Myung , Nagchoul Choi , Kanghee Cho","doi":"10.1016/j.hazadv.2024.100490","DOIUrl":"10.1016/j.hazadv.2024.100490","url":null,"abstract":"<div><div>Arsenic contamination in surface waters and groundwater affects millions of people on a daily basis. Oxidation of As(III) to less toxic As(V) is a widely used strategy to enhance the removal of As from solution. This study developed and evaluated a Fe-modified biochar (FeSP600). <em>Spirulina platensis</em> (SP) is one of the most promising microalgae because of its physicochemical properties and potential applications. The high N content of SP may affect the physicochemical properties of the biochar, which could be used as an inherent N source for N doping biochar by carbonization. After Fe modification, the formed Fe species and N-containing components of SP were used to introduce pyridinic N, which can be coordinated with Fe to form Fe-N. We demonstrated that the formed Fe species (Fe<sup>0</sup>, Fe<sup>2+</sup> and Fe<sup>3+</sup>) and the defective structures in FeSP600 could act as active sites for surface catalytic reactions. FeSP600 not only had magnetic properties but also could effectively remove As from an aqueous solution. These properties were attributed to the release of Fe<sup>2+</sup> and the reactive oxygen species (ROSs) generated by the γ-Fe<sub>2</sub>O<sub>3</sub> particles on the crystalline defect structure. As(III) and As(V) removal were affected by the initial pH values. The removal efficiencies for As(III) increased from 57.2 % to 94.9 % as the pH increased from 3 to 9, whereas that for As(V) decreased from 80.1 % to 46.8 %. The presence of coexisting ions either completely (<span><math><mrow><mi>P</mi><msubsup><mi>O</mi><mn>4</mn><mrow><mn>3</mn><mo>−</mo></mrow></msubsup></mrow></math></span>) or partially (<span><math><mrow><mi>C</mi><msup><mrow><mi>l</mi></mrow><mo>−</mo></msup></mrow></math></span>, <span><math><mrow><mi>C</mi><msubsup><mi>O</mi><mn>3</mn><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></mrow></math></span> and <span><math><mrow><mi>S</mi><msubsup><mi>O</mi><mn>4</mn><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></mrow></math></span>) inhibited As removal. The removal of As(V) depended on electrostatic interactions, but As(III) removal was a complex process, including both oxidation and surface adsorption, as the ROSs were able to oxidize As(III) to As(V). Our study demonstrates that FeSP600 has properties that are beneficial for the removal of As(III) and As(V) from aqueous environments. The findings of this study have potential for real-world application in treating As-contaminated water sources, particularly in improving drinking water purification systems in developing countries. More importantly, an assessment of the impact of FeSP600 usage on aquatic ecosystems is required to ensure the safe application of this technology. Therefore, developing methods for mass production of FeSP600 is essential for the commercialization of this technology, necessitating process engineering studies in this area.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100490"},"PeriodicalIF":5.4,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vermicomposting, a process in which housefly larvae are used to decompose organic waste, has attracted attention as a method for managing antimicrobial-resistant bacteria (ARB) in livestock manure. Vermicomposting effectively reduces antimicrobial resistance genes (ARGs) and residual antimicrobials. However, the evaluation of live bacteria, including ARB, remains scarce. Additionally, conventional DNA extraction methods include DNA from dead bacteria, impeding the accurate evaluation of ARG-associated risk in compost and the microbiome. This study assesses the effectiveness of vermicomposting pig manure against antimicrobial resistance (AMR) by evaluating the ARB, ARGs (focusing on DNA from live bacteria), and microbiome associated with vermicomposting processes. Vermicomposting significantly reduces the abundance of bacteria, including ARB, and decreases the ARG (tetA, tetB, blaTEM, and blaCTX−M) copy number in live bacteria. Bacterial community analysis revealed an increase in the abundance of Gammaproteobacteria. Moreover, the vermicomposted samples effectively cultivated myriad plants. Overall, vermicomposting effectively reduces the ARB and ARGs in pig manure, with potential benefits for plant growth and sustainable waste management. Hence, it can be widely applied to treat livestock manure and other organic wastes to combat AMR.
{"title":"Vermicomposting reduces the antimicrobial resistance in livestock waste","authors":"Masaru Usui , Akira Fukuda , Takashi Azuma , Yoshihiro Kobae , Yuichi Hori , Mitsutaka Kushima , Satoshi Katada , Chie Nakajima , Yasuhiko Suzuki","doi":"10.1016/j.hazadv.2024.100491","DOIUrl":"10.1016/j.hazadv.2024.100491","url":null,"abstract":"<div><div>Vermicomposting, a process in which housefly larvae are used to decompose organic waste, has attracted attention as a method for managing antimicrobial-resistant bacteria (ARB) in livestock manure. Vermicomposting effectively reduces antimicrobial resistance genes (ARGs) and residual antimicrobials. However, the evaluation of live bacteria, including ARB, remains scarce. Additionally, conventional DNA extraction methods include DNA from dead bacteria, impeding the accurate evaluation of ARG-associated risk in compost and the microbiome. This study assesses the effectiveness of vermicomposting pig manure against antimicrobial resistance (AMR) by evaluating the ARB, ARGs (focusing on DNA from live bacteria), and microbiome associated with vermicomposting processes. Vermicomposting significantly reduces the abundance of bacteria, including ARB, and decreases the ARG (<em>tetA, tetB, bla<sub>TEM</sub></em>, and <em>bla<sub>CTX−M</sub></em>) copy number in live bacteria. Bacterial community analysis revealed an increase in the abundance of <em>Gammaproteobacteria</em>. Moreover, the vermicomposted samples effectively cultivated myriad plants. Overall, vermicomposting effectively reduces the ARB and ARGs in pig manure, with potential benefits for plant growth and sustainable waste management. Hence, it can be widely applied to treat livestock manure and other organic wastes to combat AMR.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100491"},"PeriodicalIF":5.4,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-30DOI: 10.1016/j.hazadv.2024.100489
Chongchong Qi , Kechao Li , Min Zhou , Chunhui Zhang , Xiaoming Zheng , Qiusong Chen , Tao Hu
Excessive concentrations of Ni in soil have many severe effects, negatively affecting human health and leading to disease, while also posing a threat to animals and plants. Although the dangers of high Ni concentrations have been widely recognized, rapid and large-scale tools for the identification of Ni contamination are still lacking. Visible-near-infrared (Vis-NIR) spectroscopy has been employed to rapidly identify Ni contamination; however, previous studies suffer from issues inherent to small datasets and the tendency to negate data imbalances. To address these issues, a large dataset comprising 18,675 soil samples was used to predict soil Ni contamination by combining Vis-NIR data with machine learning (ML). The data imbalance inherent to previous studies was addressed using two data sampling methods. To build a robust classification model for Ni contamination, four spectral preprocessing methods and four ML algorithms were compared. The optimal extreme gradient boosting model achieved recall, accuracy, area under the curve, and geometric mean scores of 0.8203, 0.8806, 0.9268, and 0.8508, respectively. Model predictions across the United States identified specific regions with high possibility of Ni contamination. Overall, the model developed in this study offers an improved accuracy in predicting soil Ni contamination at the continental scale, and can be used to prioritize further testing and guide policymaking.
土壤中过高浓度的镍会产生许多严重影响，对人类健康造成负面影响并导致疾病，同时还会对动物和植物构成威胁。尽管人们已普遍认识到高浓度镍的危害，但仍缺乏快速、大规模的镍污染识别工具。可见光-近红外（Vis-NIR）光谱法已被用于快速识别镍污染；然而，以往的研究受到小数据集固有问题和数据不平衡倾向的影响。为了解决这些问题，我们使用了一个由 18,675 个土壤样本组成的大型数据集，通过将可见光-近红外数据与机器学习（ML）相结合来预测土壤镍污染。利用两种数据采样方法解决了以往研究中固有的数据不平衡问题。为了建立一个可靠的镍污染分类模型，比较了四种光谱预处理方法和四种 ML 算法。最佳极端梯度提升模型的召回率、准确率、曲线下面积和几何平均得分分别为 0.8203、0.8806、0.9268 和 0.8508。模型对美国各地的预测确定了镍污染可能性较高的特定区域。总体而言，本研究开发的模型提高了预测大陆范围土壤镍污染的准确性，可用于确定进一步测试的优先次序并指导政策制定。
{"title":"Leveraging visible-near-infrared spectroscopy and machine learning to detect nickel contamination in soil: Addressing class imbalances for environmental management","authors":"Chongchong Qi , Kechao Li , Min Zhou , Chunhui Zhang , Xiaoming Zheng , Qiusong Chen , Tao Hu","doi":"10.1016/j.hazadv.2024.100489","DOIUrl":"10.1016/j.hazadv.2024.100489","url":null,"abstract":"<div><div>Excessive concentrations of Ni in soil have many severe effects, negatively affecting human health and leading to disease, while also posing a threat to animals and plants. Although the dangers of high Ni concentrations have been widely recognized, rapid and large-scale tools for the identification of Ni contamination are still lacking. Visible-near-infrared (Vis-NIR) spectroscopy has been employed to rapidly identify Ni contamination; however, previous studies suffer from issues inherent to small datasets and the tendency to negate data imbalances. To address these issues, a large dataset comprising 18,675 soil samples was used to predict soil Ni contamination by combining Vis-NIR data with machine learning (ML). The data imbalance inherent to previous studies was addressed using two data sampling methods. To build a robust classification model for Ni contamination, four spectral preprocessing methods and four ML algorithms were compared. The optimal extreme gradient boosting model achieved recall, accuracy, area under the curve, and geometric mean scores of 0.8203, 0.8806, 0.9268, and 0.8508, respectively. Model predictions across the United States identified specific regions with high possibility of Ni contamination. Overall, the model developed in this study offers an improved accuracy in predicting soil Ni contamination at the continental scale, and can be used to prioritize further testing and guide policymaking.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100489"},"PeriodicalIF":5.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Groundwater is an important natural resource stored in aquifers beneath the earth's surface. The hilly district of Shopian in Jammu and Kashmir serves as a study area due to its present and future groundwater needs. This study aims to assess the groundwater potential zones (GWPZ) in Shopian District using the analytical hierarchy process (AHP) and weighted index overlay analysis (WIOA). The AHP approach attempted to assign weights to specific groundwater recharge characteristics. The various thematic maps, including rainfall, land cover and usage, slope, drainage density, geomorphology, soil, and geology, were integrated using overlay analysis to create a comprehensive GWPZ map. Geographic information system (GIS) and remote sensing (RS) tools were utilized to indicate the potential groundwater existence in the studied area. Four zones were created from the GWPZ: very poor, poor, good, and very good. The analysis showed that the very poor GWPZ is around 35.12 sq km, the poor zone is roughly 166.89 sq km, the excellent zone is approximately 340 sq km, and the very good zone is approximately 66.13 sq km. The present study reveals significant perspectives for organizing and effectively restocking groundwater locations within the district. It intends to safeguard the sustainability of groundwater resources for future generations by promoting their successful development and management.
{"title":"Evaluation of groundwater quality potential zones using AHP and WIOA models in Shopian District, Jammu and Kashmir, India: A GIS","authors":"Shoib Maqbool , Vineesha Singh , Manoj Kumar Patley , Sapna Kinattinkara , Thangavelu Arumugam","doi":"10.1016/j.hazadv.2024.100488","DOIUrl":"10.1016/j.hazadv.2024.100488","url":null,"abstract":"<div><div>Groundwater is an important natural resource stored in aquifers beneath the earth's surface. The hilly district of Shopian in Jammu and Kashmir serves as a study area due to its present and future groundwater needs. This study aims to assess the groundwater potential zones (GWPZ) in Shopian District using the analytical hierarchy process (AHP) and weighted index overlay analysis (WIOA). The AHP approach attempted to assign weights to specific groundwater recharge characteristics. The various thematic maps, including rainfall, land cover and usage, slope, drainage density, geomorphology, soil, and geology, were integrated using overlay analysis to create a comprehensive GWPZ map. Geographic information system (GIS) and remote sensing (RS) tools were utilized to indicate the potential groundwater existence in the studied area. Four zones were created from the GWPZ: very poor, poor, good, and very good. The analysis showed that the very poor GWPZ is around 35.12 sq km, the poor zone is roughly 166.89 sq km, the excellent zone is approximately 340 sq km, and the very good zone is approximately 66.13 sq km. The present study reveals significant perspectives for organizing and effectively restocking groundwater locations within the district. It intends to safeguard the sustainability of groundwater resources for future generations by promoting their successful development and management.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100488"},"PeriodicalIF":5.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-29DOI: 10.1016/j.hazadv.2024.100487
Asim Nawab , Mushtaq Ahmad , Muhammad Tariq Khan , Mohammad Nafees , Imran Khan , I. Ihsanullah
The presence of microplastics (MPs) in human body parts has raised significant concerns due to their status as a major environmental pollutant. Despite existing methods for detecting and identifying MPs in human tissues, there is a lack of standardized techniques, compromising the comparability of data across studies. This review critically analyzes the current knowledge on MPs in human body parts, sources and potential exposure pathways. This study underscores the urgent need for standardized and validated techniques for accurate MP analysis and characterization in human tissues, addressing the methodological challenges in MP detection. The findings of this review indicate that humans are exposed to MPs potentially through several routes such as ingestion, inhalation and dermal contact. However, the exact routes for MPs entering the body remain unclear. It also examines the wide range of health impacts associated with MPs, such as oxidative stress, inflammatory responses, endocrine disruption, and potential genotoxicity. Nevertheless, the cellular and molecular mechanisms underlying these effects are still not well understood, especially when considering the diverse concentrations, shapes, and sizes of MPs. Therefore, further research is essential, particularly to enhance epidemiological studies that can robustly establish the link between MP exposure and health impacts in large populations. Advancing this knowledge will be crucial for developing effective strategies to safeguard both environmental and public health from the detrimental effects of MPs.
{"title":"Human exposure to microplastics: A review on exposure routes and public health impacts","authors":"Asim Nawab , Mushtaq Ahmad , Muhammad Tariq Khan , Mohammad Nafees , Imran Khan , I. Ihsanullah","doi":"10.1016/j.hazadv.2024.100487","DOIUrl":"10.1016/j.hazadv.2024.100487","url":null,"abstract":"<div><div>The presence of microplastics (MPs) in human body parts has raised significant concerns due to their status as a major environmental pollutant. Despite existing methods for detecting and identifying MPs in human tissues, there is a lack of standardized techniques, compromising the comparability of data across studies. This review critically analyzes the current knowledge on MPs in human body parts, sources and potential exposure pathways. This study underscores the urgent need for standardized and validated techniques for accurate MP analysis and characterization in human tissues, addressing the methodological challenges in MP detection. The findings of this review indicate that humans are exposed to MPs potentially through several routes such as ingestion, inhalation and dermal contact. However, the exact routes for MPs entering the body remain unclear. It also examines the wide range of health impacts associated with MPs, such as oxidative stress, inflammatory responses, endocrine disruption, and potential genotoxicity. Nevertheless, the cellular and molecular mechanisms underlying these effects are still not well understood, especially when considering the diverse concentrations, shapes, and sizes of MPs. Therefore, further research is essential, particularly to enhance epidemiological studies that can robustly establish the link between MP exposure and health impacts in large populations. Advancing this knowledge will be crucial for developing effective strategies to safeguard both environmental and public health from the detrimental effects of MPs.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100487"},"PeriodicalIF":5.4,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-28DOI: 10.1016/j.hazadv.2024.100483
P. Thamarai, V.C. Deivayanai, S. Karishma, P.R. Yaashikaa, A. Saravanan
Worldwide, water pollution poses significant threats to human health, with fluoride contamination emerging as a critical hazard. High fluoride concentrations in water cause severe health impacts, including dental and skeletal fluorosis, neurological damage, and harm to the parathyroid gland, cardiovascular, and reproductive systems. Electrochemical technique is one of the most widely used treatment technologies that has been extensively studied and provides a very effective, low-cost method of removing fluoride from contaminated water. The review reports the comprehensive electrochemical strategies for fluoride ions removal. The sources, toxicity, and impacts of fluoride pollution on health are discussed in this review. A comprehensive analysis of current electrochemical methods, including electrolysis, electrocoagulation, and the electro-fenton process, was provided in the context to facilitate the efficient removal of fluoride ions from wastewater. These methods exhibit high removal efficiencies, reaching up to 95 %, and offer scalability and operational flexibility, making them suitable for both centralized and decentralized water treatment systems. Furthermore, the recent advancements in the development of electrochemical technique for fluoride removal are critically reviewed. This study has prospected the recent developments, recommendations and future outlooks on electrochemical technique for fluoride removal.
{"title":"Effective removal of fluoride ions from contaminated water using electrochemical techniques: A critical review on recent developments and environmental perspective","authors":"P. Thamarai, V.C. Deivayanai, S. Karishma, P.R. Yaashikaa, A. Saravanan","doi":"10.1016/j.hazadv.2024.100483","DOIUrl":"10.1016/j.hazadv.2024.100483","url":null,"abstract":"<div><div>Worldwide, water pollution poses significant threats to human health, with fluoride contamination emerging as a critical hazard. High fluoride concentrations in water cause severe health impacts, including dental and skeletal fluorosis, neurological damage, and harm to the parathyroid gland, cardiovascular, and reproductive systems. Electrochemical technique is one of the most widely used treatment technologies that has been extensively studied and provides a very effective, low-cost method of removing fluoride from contaminated water. The review reports the comprehensive electrochemical strategies for fluoride ions removal. The sources, toxicity, and impacts of fluoride pollution on health are discussed in this review. A comprehensive analysis of current electrochemical methods, including electrolysis, electrocoagulation, and the electro-fenton process, was provided in the context to facilitate the efficient removal of fluoride ions from wastewater. These methods exhibit high removal efficiencies, reaching up to 95 %, and offer scalability and operational flexibility, making them suitable for both centralized and decentralized water treatment systems. Furthermore, the recent advancements in the development of electrochemical technique for fluoride removal are critically reviewed. This study has prospected the recent developments, recommendations and future outlooks on electrochemical technique for fluoride removal.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100483"},"PeriodicalIF":5.4,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-27DOI: 10.1016/j.hazadv.2024.100486
Mohammad Ashraf Ali, Ibrahim M. Maafa
Methylene blue is being used in several applications including textile, medical diagnostics, and surgical procedures, and its concentration in wastewater is increasing significantly globally with time, posing high health hazards for humans and other living organisms. Research studies are in progress worldwide to eliminate methylene blue and other related pollutants using several methods, including adsorption, photolysis, photocatalytic degradation, and photoelectrocatalytic degradation and elimination. Methylene blue can be degraded and eliminated proficiently from wastewater using photocatalytic degradation or photolysis. Several semiconductor nanomaterials are being utilized to degrade methylene blue and other related drugs in wastewater. This is a review conducted for the research papers published in early 2024 on cerium-containing catalysts for the photodegradation of methylene blue. These studies have used a variety of reaction conditions that include radiation types (UV, solar, and visible), pH of the solution, concentration of methylene blue, concentration of nanomaterials used, and presence of other additives and activators such as H2O2 on the photodegradation efficiency. The cerium has been used in these photocatalysts in different forms; oxide forms, oxides mixed with other metal oxides or metals, cerium salt containing nanomaterials, or as a dopant to other oxides or other metals. The metals used with cerium include zinc, tin, tellurium, magnesium, molybdenum, iron, titanium, aluminum, nickel, copper, and manganese. A summary of the reported literature showing the type of catalysts used, reaction conditions, and degradation efficiency has been presented in tabulated form. A discussion is made on the comparative and relative effects of different parameters on the photocatalytic performance of cerium-based catalysts. Some of the earlier published reviews are also presented.
{"title":"Recent literature review of Cerium-containing photocatalysts used for methylene blue degradation","authors":"Mohammad Ashraf Ali, Ibrahim M. Maafa","doi":"10.1016/j.hazadv.2024.100486","DOIUrl":"10.1016/j.hazadv.2024.100486","url":null,"abstract":"<div><div>Methylene blue is being used in several applications including textile, medical diagnostics, and surgical procedures, and its concentration in wastewater is increasing significantly globally with time, posing high health hazards for humans and other living organisms. Research studies are in progress worldwide to eliminate methylene blue and other related pollutants using several methods, including adsorption, photolysis, photocatalytic degradation, and photoelectrocatalytic degradation and elimination. Methylene blue can be degraded and eliminated proficiently from wastewater using photocatalytic degradation or photolysis. Several semiconductor nanomaterials are being utilized to degrade methylene blue and other related drugs in wastewater. This is a review conducted for the research papers published in early 2024 on cerium-containing catalysts for the photodegradation of methylene blue. These studies have used a variety of reaction conditions that include radiation types (UV, solar, and visible), pH of the solution, concentration of methylene blue, concentration of nanomaterials used, and presence of other additives and activators such as H<sub>2</sub>O<sub>2</sub> on the photodegradation efficiency. The cerium has been used in these photocatalysts in different forms; oxide forms, oxides mixed with other metal oxides or metals, cerium salt containing nanomaterials, or as a dopant to other oxides or other metals. The metals used with cerium include zinc, tin, tellurium, magnesium, molybdenum, iron, titanium, aluminum, nickel, copper, and manganese. A summary of the reported literature showing the type of catalysts used, reaction conditions, and degradation efficiency has been presented in tabulated form. A discussion is made on the comparative and relative effects of different parameters on the photocatalytic performance of cerium-based catalysts. Some of the earlier published reviews are also presented.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100486"},"PeriodicalIF":5.4,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-26DOI: 10.1016/j.hazadv.2024.100479
Kannan Pandian , Mohamed Roshan Abu Firnass Mustaffa , Govindaraj Mahalingam , Arunachalam Paramasivam , Abishek John Prince , Manimaran Gajendiren , Abdul Rahman Rafiqi Mohammad , Surya Teja Varanasi
Using chemical fertilizers extensively in small farms has helped increase crop yields, supporting food security and economic growth. However, recent studies show that these fertilizers are often used inefficiently and inconsistently. This leads to environmental harm, unbalanced soil nutrients, and lower-quality food production. These issues threaten food security, which is vital for human survival and may lead to the abandonment of arable land. This situation calls for a significant shift in soil conservation research to better connect scientific findings with practical conservation methods, ensuring that agricultural progress goes hand in hand with environmental sustainability. Effective use of nitrogen (N), phosphorus (P), and potassium (K) fertilizers is vital for both environmental sustainability and food security. Correcting nutritional imbalances, especially the disrupted N/P ratio caused by faulty fertilization practices, is key to ensuring a balanced nutrient supply. These imbalances have a substantial effect on aquatic and terrestrial ecosystems, altering their functionality, biodiversity and human nutrition Therefore, adopting balanced fertilization techniques is essential to combine environmental sustainability with global food security and achieve the Sustainable Development Goals (SDGs).To optimize nutrient consumption and production efficiency, regulations should be enacted to enforce the 4R principle, which involves applying the right nutrient source at the appropriate rate, time, method and location. This article emphasizes the connections between current agricultural practices, land use, fertilizer application, soil degradation, and future challenges. It promotes environmentally friendly farming methods that recognize the vital links between soil quality, food security, human health, and environmental sustainability.
{"title":"Synergistic conservation approaches for nurturing soil, food security and human health towards sustainable development goals","authors":"Kannan Pandian , Mohamed Roshan Abu Firnass Mustaffa , Govindaraj Mahalingam , Arunachalam Paramasivam , Abishek John Prince , Manimaran Gajendiren , Abdul Rahman Rafiqi Mohammad , Surya Teja Varanasi","doi":"10.1016/j.hazadv.2024.100479","DOIUrl":"10.1016/j.hazadv.2024.100479","url":null,"abstract":"<div><div>Using chemical fertilizers extensively in small farms has helped increase crop yields, supporting food security and economic growth. However, recent studies show that these fertilizers are often used inefficiently and inconsistently. This leads to environmental harm, unbalanced soil nutrients, and lower-quality food production. These issues threaten food security, which is vital for human survival and may lead to the abandonment of arable land. This situation calls for a significant shift in soil conservation research to better connect scientific findings with practical conservation methods, ensuring that agricultural progress goes hand in hand with environmental sustainability. Effective use of nitrogen (N), phosphorus (P), and potassium (K) fertilizers is vital for both environmental sustainability and food security. Correcting nutritional imbalances, especially the disrupted N/P ratio caused by faulty fertilization practices, is key to ensuring a balanced nutrient supply. These imbalances have a substantial effect on aquatic and terrestrial ecosystems, altering their functionality, biodiversity and human nutrition Therefore, adopting balanced fertilization techniques is essential to combine environmental sustainability with global food security and achieve the Sustainable Development Goals (SDGs).To optimize nutrient consumption and production efficiency, regulations should be enacted to enforce the 4R principle, which involves applying the right nutrient source at the appropriate rate, time, method and location. This article emphasizes the connections between current agricultural practices, land use, fertilizer application, soil degradation, and future challenges. It promotes environmentally friendly farming methods that recognize the vital links between soil quality, food security, human health, and environmental sustainability.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100479"},"PeriodicalIF":5.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Greenhouse and field studies investigated the phytoextraction potential of soil cadmium (Cd) by Tagetes erecta L., a popular ornamental flower in Asia. The effects of organic fertilizer, cattle manure, and pig manure in supporting plant growth and enhancing Cd uptake were also examined. Plants grown in soil supplemented with pig manure produced greatest biomass (12.8 ± 1.6 and 11.8 ± 0.9 g plant−1 in greenhouse and field experiments, respectively). Plant parts accumulated Cd in the order: shoot > root > flower in all treatments. Furthermore, T. erecta had a high phytoextraction potential as evidenced by translocation factors and enrichment coefficients > 1 for shoots. Marigolds cultivated in Cd-contaminated soil supplemented with organic fertilizer (CdOrg) exhibited Cd concentrations in flowers below the Maximum Permissible Level for consumption (< 0.2 mg kg−1), indicating that the edible flowers pose no health risk to humans. The flowers additionally contained significant quantities of total phenolics and phenolic acids, which may indicate their potential as an indicator of Cd-initiated oxidative stress. The phenolic compounds can furthermore function as precursors for manufactured medicinal products by acting as antioxidants and antimicrobials. Application of organic fertilizer and selected organic amendments may have contributed to the greater concentrations of phenolics. The Cd alone treatment resulted in lowest production of bioactive compounds and antioxidant capacity. It is proposed that T. erecta be applied for Cd phytoextraction while enhancing local economies as an ornamental species, and for plant extracts for application of bioactive compounds and antioxidant capacity.
{"title":"Phytomanagement of cadmium using Tagetes erecta in greenhouse and field conditions","authors":"Weeradej Meeinkuirt , Theerawut Phusantisampan , Jittawan Kubola , Theeraphan Chumroenphat , John Pichtel","doi":"10.1016/j.hazadv.2024.100481","DOIUrl":"10.1016/j.hazadv.2024.100481","url":null,"abstract":"<div><div>Greenhouse and field studies investigated the phytoextraction potential of soil cadmium (Cd) by <em>Tagetes erecta</em> L., a popular ornamental flower in Asia. The effects of organic fertilizer, cattle manure, and pig manure in supporting plant growth and enhancing Cd uptake were also examined. Plants grown in soil supplemented with pig manure produced greatest biomass (12.8 ± 1.6 and 11.8 ± 0.9 g plant<sup>−1</sup> in greenhouse and field experiments, respectively). Plant parts accumulated Cd in the order: shoot > root > flower in all treatments. Furthermore, <em>T. erecta</em> had a high phytoextraction potential as evidenced by translocation factors and enrichment coefficients > 1 for shoots. Marigolds cultivated in Cd-contaminated soil supplemented with organic fertilizer (CdOrg) exhibited Cd concentrations in flowers below the Maximum Permissible Level for consumption (< 0.2 mg kg<sup>−1</sup>), indicating that the edible flowers pose no health risk to humans. The flowers additionally contained significant quantities of total phenolics and phenolic acids, which may indicate their potential as an indicator of Cd-initiated oxidative stress. The phenolic compounds can furthermore function as precursors for manufactured medicinal products by acting as antioxidants and antimicrobials. Application of organic fertilizer and selected organic amendments may have contributed to the greater concentrations of phenolics. The Cd alone treatment resulted in lowest production of bioactive compounds and antioxidant capacity. It is proposed that <em>T. erecta</em> be applied for Cd phytoextraction while enhancing local economies as an ornamental species, and for plant extracts for application of bioactive compounds and antioxidant capacity.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"16 ","pages":"Article 100481"},"PeriodicalIF":5.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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