Yusen Diao, Xiangqian Zhou, Yun Zhu, Jinlong Yan, Guixiang Quan, Mei Pan, Panfeng Wu, Hao Chen, Jiafeng Huang, Heng Wang
{"title":"纳米级生物炭-EPS电晕的形成:吸附性和毒性","authors":"Yusen Diao, Xiangqian Zhou, Yun Zhu, Jinlong Yan, Guixiang Quan, Mei Pan, Panfeng Wu, Hao Chen, Jiafeng Huang, Heng Wang","doi":"10.1007/s11270-024-07134-0","DOIUrl":null,"url":null,"abstract":"<p>Biochar (BC) can be coated with microbial extracellular polymeric materials (EPS) to form BC-EPS corona in an aqueous environment, which may significantly alter its ecological toxicity caused by EPS-facilitated accumulation of environmental contaminants. This work examined the EPS corona formation on the surface of shrub branch BC and wheat straw BC, pyrolyzed at 450 °C and 650 °C, and evaluated its effect on the sorption of divalent metals Cd<sup>2+</sup>, Pb<sup>2+</sup>, Cu<sup>2+</sup>, and Ni<sup>2+</sup>. In single metal systems, the formation of a BC-EPS corona shows little enhancement on Cd<sup>2+</sup> and Cu<sup>2+</sup> accumulation, but significantly elevated Ni<sup>2+</sup> and Pb<sup>2+</sup> adsorption: Ni<sup>2+</sup> sorption increased from 20 mg/g for pristine BCs to 30 mg/g, Pb<sup>2+</sup> sorption increased from below 25 mg/g to above 90 mg/g. In multiple metal systems, the binding distribution of Pb<sup>2+</sup> and Cu<sup>2+</sup> on BC-EPS corona appeared to be more extensive compared to that of Cd<sup>2+</sup> and Ni<sup>2+</sup>. The toxicity of BC-EPS increased by about 2 to 3 times in aquatic organisms compared to pristine BC, attributed to the higher accumulation of heavy metals in BC-EPS corona. In summary, BC-EPS corona enhanced BC’s sorption capacity for metals, especially for Pb<sup>2+</sup> and Ni<sup>2+</sup>, thus elevating the BC’s ecological risks owing extra amount of pollution loading.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Formation of Nanoscale Biochar-EPS Corona: Adsorption and Toxicity\",\"authors\":\"Yusen Diao, Xiangqian Zhou, Yun Zhu, Jinlong Yan, Guixiang Quan, Mei Pan, Panfeng Wu, Hao Chen, Jiafeng Huang, Heng Wang\",\"doi\":\"10.1007/s11270-024-07134-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Biochar (BC) can be coated with microbial extracellular polymeric materials (EPS) to form BC-EPS corona in an aqueous environment, which may significantly alter its ecological toxicity caused by EPS-facilitated accumulation of environmental contaminants. This work examined the EPS corona formation on the surface of shrub branch BC and wheat straw BC, pyrolyzed at 450 °C and 650 °C, and evaluated its effect on the sorption of divalent metals Cd<sup>2+</sup>, Pb<sup>2+</sup>, Cu<sup>2+</sup>, and Ni<sup>2+</sup>. In single metal systems, the formation of a BC-EPS corona shows little enhancement on Cd<sup>2+</sup> and Cu<sup>2+</sup> accumulation, but significantly elevated Ni<sup>2+</sup> and Pb<sup>2+</sup> adsorption: Ni<sup>2+</sup> sorption increased from 20 mg/g for pristine BCs to 30 mg/g, Pb<sup>2+</sup> sorption increased from below 25 mg/g to above 90 mg/g. In multiple metal systems, the binding distribution of Pb<sup>2+</sup> and Cu<sup>2+</sup> on BC-EPS corona appeared to be more extensive compared to that of Cd<sup>2+</sup> and Ni<sup>2+</sup>. The toxicity of BC-EPS increased by about 2 to 3 times in aquatic organisms compared to pristine BC, attributed to the higher accumulation of heavy metals in BC-EPS corona. In summary, BC-EPS corona enhanced BC’s sorption capacity for metals, especially for Pb<sup>2+</sup> and Ni<sup>2+</sup>, thus elevating the BC’s ecological risks owing extra amount of pollution loading.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3>\\n\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-05-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://doi.org/10.1007/s11270-024-07134-0\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://doi.org/10.1007/s11270-024-07134-0","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Formation of Nanoscale Biochar-EPS Corona: Adsorption and Toxicity
Biochar (BC) can be coated with microbial extracellular polymeric materials (EPS) to form BC-EPS corona in an aqueous environment, which may significantly alter its ecological toxicity caused by EPS-facilitated accumulation of environmental contaminants. This work examined the EPS corona formation on the surface of shrub branch BC and wheat straw BC, pyrolyzed at 450 °C and 650 °C, and evaluated its effect on the sorption of divalent metals Cd2+, Pb2+, Cu2+, and Ni2+. In single metal systems, the formation of a BC-EPS corona shows little enhancement on Cd2+ and Cu2+ accumulation, but significantly elevated Ni2+ and Pb2+ adsorption: Ni2+ sorption increased from 20 mg/g for pristine BCs to 30 mg/g, Pb2+ sorption increased from below 25 mg/g to above 90 mg/g. In multiple metal systems, the binding distribution of Pb2+ and Cu2+ on BC-EPS corona appeared to be more extensive compared to that of Cd2+ and Ni2+. The toxicity of BC-EPS increased by about 2 to 3 times in aquatic organisms compared to pristine BC, attributed to the higher accumulation of heavy metals in BC-EPS corona. In summary, BC-EPS corona enhanced BC’s sorption capacity for metals, especially for Pb2+ and Ni2+, thus elevating the BC’s ecological risks owing extra amount of pollution loading.
期刊介绍:
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
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Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.