Environmental Pollutants and Bioavailability最新文献_第5页

Noncondensed aromatic carbon of sludge-derived biochar predominated peroxydisulfate activation mechanism for tetracycline degradation via an electron transfer pathway 污泥源生物炭的非缩合芳香碳主导过氧二硫酸盐活化机制，通过电子转移途径降解四环素

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-10-17 DOI: 10.1080/26395940.2023.2267755

Xianni Yang, Xuemin Xu, Yanyan Lu, Shengsen Wang

{"title":"Noncondensed aromatic carbon of sludge-derived biochar predominated peroxydisulfate activation mechanism for tetracycline degradation via an electron transfer pathway","authors":"Xianni Yang, Xuemin Xu, Yanyan Lu, Shengsen Wang","doi":"10.1080/26395940.2023.2267755","DOIUrl":"https://doi.org/10.1080/26395940.2023.2267755","url":null,"abstract":"Discrimination of the catalytic ability of heterogeneous biochar components is often challenging. Herein, a sewage sludge-derived biochar (SDBC) was prepared to activate peroxydisulfate (PDS) for tetracycline (TC) degradation. To verify the contribution of different carbon components, SDBC was bleached with NaClO2 and CH3COOH to remove noncondensed aromatic carbon (NAC) contained in biochar, which was confirmed by 13C Nuclear Magnetic Resonance. The batch degradation experiment revealed that NAC removal decreased TC degradation by SDBC from 84.1% to 33.2% within 2 h, indicating its significant role in PDS activation. The quenching and electron paramagnetic resonance experiments suggested a very minor contribution of radical pathway in TC degradation. Instead, the electron transfer pathway predominated TC degradation mechanism as inferred by electrochemical tests. This is likely ascribed to formation of a biochar-PDS metastable complex, facilitating electron transfer from tetracycline-like compounds. An X-ray photoelectron spectroscopy confirmed that the percent of graphitic N in SDBC decreased after the degradation reaction, which suggested graphitic N is an important active site in biochar. Besides, acid-washed SDBC did not change TC degradation behavior excluding significant contribution of minerals in SDBC to PDS activation. Thus, the roles of biochar components in catalyzing PDS were quantified for the first time, proving insight for selection and manipulation of biochar in catalyzing PDS in environmental application.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136038384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of different biochar additions on the change of carbon nitrogen content and bacterial community in meadow soils 不同生物炭添加量对草甸土壤碳氮含量及细菌群落变化的影响

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-10-16 DOI: 10.1080/26395940.2023.2268272

Pingnan Zhao, Xiaoyuan Gao, Dong Liu, Yuxuan Sun, Ming Li, Song Han

引用次数: 0

Transport of polypropylene, polyvinyl chloride, polyethylene terephthalate and polymethyl methacrylate microplastics in porous media under gradient ionic strength 梯度离子强度下多孔介质中聚丙烯、聚氯乙烯、聚对苯二甲酸乙二醇酯和聚甲基丙烯酸甲酯微塑料的输运

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-10-15 DOI: 10.1080/26395940.2023.2269315

Shaohua Cao, Shunan Dong, Lei Wang, Emmanuel B Suakollie, Huiyi Wu, Yulu Yu

{"title":"Transport of polypropylene, polyvinyl chloride, polyethylene terephthalate and polymethyl methacrylate microplastics in porous media under gradient ionic strength","authors":"Shaohua Cao, Shunan Dong, Lei Wang, Emmanuel B Suakollie, Huiyi Wu, Yulu Yu","doi":"10.1080/26395940.2023.2269315","DOIUrl":"https://doi.org/10.1080/26395940.2023.2269315","url":null,"abstract":"In this work, column experiments were applied to investigate the transport of four kinds of microplastics (MPs) under a series of ionic strength (IS) conditions. Under 0.1 mM IS, PMMA MPs showed the highest mobility, as well as the PET MPs showed the lowest mobility. With the IS increased, the transport of all kinds of MPs in porous media was generally reduced to the minimum. The transport reducing efficiency of PMMA MPs and PET MPs was lower than that of the PVC MPs and PP MPs. It was found that both the hydro-chemical conditions and basic properties showed combined effect on MPs transport in porous media. The DLVO results were well used to describe the deposition of MPs onto sand surface and excavate the transport behaviors of MPs. The one-site kinetic deposition model was successfully conducted to fit the observed breakthrough curves. Findings from this study elucidated the key factors controlling the MPs transport in porous media, contributing to the prediction and assessment of the environmental risks of MPs.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135758909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Is there future of sequential chemical extraction for speciation analysis of metal(loid)s in plants? 序贯化学萃取法对植物中金属(类)化物的形态分析有前景吗?

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-10-03 DOI: 10.1080/26395940.2023.2263641

Sadia Jahangir, Yating Liu, Madiha Noureen, Jing Cui, Zhenggui Wei

{"title":"Is there future of sequential chemical extraction for speciation analysis of metal(loid)s in plants?","authors":"Sadia Jahangir, Yating Liu, Madiha Noureen, Jing Cui, Zhenggui Wei","doi":"10.1080/26395940.2023.2263641","DOIUrl":"https://doi.org/10.1080/26395940.2023.2263641","url":null,"abstract":"The properties of metal(loid)s in the environment are mainly determined by their chemical forms. The chemical forms of metal(loid)s affect their possible chemical and biochemical reactions, toxicity, mobility, and bioavailability in the environment. Sequential chemical extraction (SCE) has been successfully used to clarify the chemical forms of soil metal(loid)s. However, quite a few SCE procedures have been applied for speciation analysis of plant samples; there is no systematic discussion in such a field. The current review deals with the SCE of plant metal(loid)s, and compares the extraction procedures and the extractants in different SCE methods. It has been found that some chemical forms are unreliable for plant SCE analyses. The forms can be the phosphates or oxalates of some specific metals in plants, such as gadolinium or chromium, which cannot be fully extracted by the designated extractants, 2% acetic acid, or 0.6 M/L HCl. Therefore, SCE methods for the non-bivalent metal(loid)s have been emphasized in this work. Moreover, the application status, development trends, limitations, and future directions for SCE methods of plant metal(loid)s have been discussed.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135739355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Impact of size and shape in the transport of microplastics by a springtail species 大小和形状对弹尾物种运输微塑料的影响

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-09-28 DOI: 10.1080/26395940.2023.2261776

Tianjing She, Xin Liu, Jingjing Wang, Yan Zhu

引用次数: 0

Catalytic depolymerization of lignin by metal and metal oxide: a review 金属和金属氧化物催化木质素解聚研究进展

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-09-27 DOI: 10.1080/26395940.2023.2263168

Yiran Zhao, Hao Li, Guoqiang Chen, Hongying Huang, Enhui Sun, Ling Chen, Cheng Yong, Hongmei Jin, Shuping Wu, Ping Qu

引用次数: 0

Evaluating the effects of pH and temperature on sulphate-reducing bacteria and modelling of their effects in stirred bioreactors 评价pH和温度对硫酸盐还原菌的影响及其在搅拌生物反应器中的影响模型

4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-09-16 DOI: 10.1080/26395940.2023.2257388

Karabelo Moloantoa, Zenzile Khetsha, Mokgaotsa Mochane, John Unuofin, Abdon Atangana, Errol Cason, Esta van Heerden, Julio Castillo

{"title":"Evaluating the effects of pH and temperature on sulphate-reducing bacteria and modelling of their effects in stirred bioreactors","authors":"Karabelo Moloantoa, Zenzile Khetsha, Mokgaotsa Mochane, John Unuofin, Abdon Atangana, Errol Cason, Esta van Heerden, Julio Castillo","doi":"10.1080/26395940.2023.2257388","DOIUrl":"https://doi.org/10.1080/26395940.2023.2257388","url":null,"abstract":"Sulphate (SO4) abundance in the earth’s crust contributes largely to industrial wastewater contamination lowering the pH, which exuberates the dissolution of metals forming acidic drainages. Biological sulphate reduction as a remediation process can be affected by factors such as pH, temperature and high sulphide concentrations. In this study, sulphate-reducing bacterial community enriched from mine wastewaters was applied in semi-automated bioreactors to assess the effects of these factors on microbial sulphate reduction capacities. Low pH (3.5) and temperature (10°C) were observed to promote the toxicity of sulphur-reduced species on the consortium while mesophilic temperature (25°C) and near neutral pH (6.2) were observed to induce optimum SO4 reduction attaining a maximum of 95% SO4 reduction. Obtained SO4 reduction dynamics data was then applied in formulating a unique non-competitive inhibition equation that models biogeochemical events during SO4 reduction under varied pH and temperature conditions and predicts the efficacy of a bioremediation system.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135307313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Spatial variability of heavy metals in soils and vegetation and associated risk to grazing animals in the abandoned gold mine in Francistown, Botswana 博茨瓦纳弗朗西斯敦废弃金矿中土壤和植被中重金属的空间变异及其对放牧动物的相关风险

IF 3.3 4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-09-08 DOI: 10.1080/26395940.2023.2254493

T. Manyiwa, Venecio Ultra, Mosimanegape Hengari, Gaolathe Rantong

引用次数: 0

Soil contamination and health risk assessment at coastal Upazilas of the Bangladesh: a case study 孟加拉国沿海Upazilas的土壤污染和健康风险评估:案例研究

IF 3.3 4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-09-04 DOI: 10.1080/26395940.2023.2253996

Sk Abdul Kader Arafin, Md Musfike Meraz, H. Abdo, Md. Habibur Rahman Sobuz, Md. Montaseer Meraz, M. J. Abedin, J. Ferdous, A.K.M. Fazlul Hoque, Hussein Almohamad, Ahmed Abdullah Al Dughairi, Jasem A. Albanai

{"title":"Soil contamination and health risk assessment at coastal Upazilas of the Bangladesh: a case study","authors":"Sk Abdul Kader Arafin, Md Musfike Meraz, H. Abdo, Md. Habibur Rahman Sobuz, Md. Montaseer Meraz, M. J. Abedin, J. Ferdous, A.K.M. Fazlul Hoque, Hussein Almohamad, Ahmed Abdullah Al Dughairi, Jasem A. Albanai","doi":"10.1080/26395940.2023.2253996","DOIUrl":"https://doi.org/10.1080/26395940.2023.2253996","url":null,"abstract":"ABSTRACT The present study analyzed soil samples from flood-prone Unions in two Coastal Upazilas of Bangladesh using Proton Induced X-Ray Emission (PIXE) techniques with Van de Graaff Accelerator for detecting heavy trace elements and Gamma spectrometry techniques. The findings indicate that while Potassium (averaging 19,62 μg/g for Sutarkhali; 21364.67 μg/g for Amtoli) and Calcium (averaging 36,923.92 μg/g for Sutarkhali; 30404.33 μg/g for Amtoli) levels were high naturally, the levels of Lead (averaging 71.8 μg/g for Sutarkhali; 171.44 μg/g for Amtoli), and Chromium (averaging 6.87 μg/g for Sutarkhali; 340.22 μg/g for Amtoli) were posing a serious risk to the inhabitants. The evaluation contamination factor (CF), pollution load index (PLI), potential ecological risk index (ERI) and health risk assessment indicate severe heavy metal pollution in both regions, with young children being particularly vulnerable to lead poisoning. Nonetheless, the radiation levels were below the safe limit set by the International Atomic Energy Agency (IAEA).","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"75 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86365662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Spatial distribution, ecotoxicity and human health assessment of nutrients and heavy metals in river sediment under urbanization – A study case of Yitong River, China 城市化条件下河流沉积物中营养物质和重金属的空间分布、生态毒性及人体健康评价——以伊通河为例

IF 3.3 4区环境科学与生态学

Environmental Pollutants and Bioavailability Pub Date : 2023-09-01 DOI: 10.1080/26395940.2023.2248384

Chao Zhang, Fujie Zhai, Xudong Deng, Baoqing Shan

{"title":"Spatial distribution, ecotoxicity and human health assessment of nutrients and heavy metals in river sediment under urbanization – A study case of Yitong River, China","authors":"Chao Zhang, Fujie Zhai, Xudong Deng, Baoqing Shan","doi":"10.1080/26395940.2023.2248384","DOIUrl":"https://doi.org/10.1080/26395940.2023.2248384","url":null,"abstract":"ABSTRACT We investigated the contents and distributions of nutrients and heavy metals in sediment from the Yitong River. The main aims were to analyze heavy metals speciation and evaluate their bioavailability, in order to assess the risks they pose to both ecosystem and human health. The average total nitrogen (TN), total phosphorus (TP), organic matter (OM) and Cd, Cr, Cu, Ni, Pb and Zn contents were 1747.69, 895.58, 75103, 0.19, 75.64, 33.61, 47.17, 56.65 and 159.91 mg kg−1, respectively. Results from acid-extraction fraction analysis showed that the proportions of Cd and Zn ranged from 3.78% to 30.20% and 5.31% to 30.74%, respectively. Health risk assessment model showed the risk index values of children and adults were 0.412 and 0.059, respectively, indicating a minimal threat to human health. Multivariate statistical analyses revealed that TN and TP may have similar sources and could be attributed to combined sewer overflows, while Cr, Cu, Ni and Zn were primarily derived from industrial pollution sources. Toxicity bioassay tests demonstrated that the majority of sediment samples were classified as non-toxic. However, 25% of the samples showed slight toxicity towards Vibrio qinghaiensis Q67, while 7% of the samples exhibited slight toxicity towards Daphnia magna. Based on these findings, it is necessary to implement pollution control measures and conduct assessments of aquatic ecological risks in sediments from urban rivers. These results can be used to develop effective strategies for the management and governance of aquatic sediments.","PeriodicalId":11785,"journal":{"name":"Environmental Pollutants and Bioavailability","volume":"16 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78133339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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