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Occurrence of contaminants in drinking water sources and the potential of biochar for water quality improvement: A review
Critical Reviews in Environmental Science and Technology ( IF 12.6 ) Pub Date : 2019-06-26 , DOI: 10.1080/10643389.2019.1629803
Kumuduni Niroshika Palansooriya 1 , Yi Yang 2 , Yiu Fai Tsang 2 , Binoy Sarkar 3 , Deyi Hou 4 , Xinde Cao 5, 6 , Erik Meers 7 , Jörg Rinklebe 8, 9 , Ki-Hyun Kim 10 , Yong Sik Ok 1
Affiliation  

Abstract In this work, the occurrence of contaminants in drinking water sources was described in relation to their treatment options based on both conventional (e.g., coagulation-flocculation, sedimentation filtration, and chlorination) and advanced treatment techniques (e.g., membrane filtration, ozonation, and biofiltration). However, due to apparent drawbacks of these methods (e.g., formation of disinfection by-products (DBPs)), it is desirable to develop an alternative option for safe drinking water. In this respect, biochar is recognized as an effective candidate to resolve the limitations in treating common pollutants typically occurring in drinking water such as microbial contaminants, inorganic contaminants, heavy metals, volatile organic compounds (VOCs), pharmaceuticals and personal care products (PPCPs), and endocrine disrupting chemicals (EDCs). As biochar can exhibit different types of interactions with adsorbates, its sorption processes can be explained by diverse mechanisms, e.g., π-π electron donor-acceptor interactions, complexation, precipitation, H-bonding, and electrostatic attraction. In light of the attractive features of biochar (e.g., enhanced sorption properties, cost-effectiveness, and environmentally friendly nature), we offer in-depth discussion on biochar-based water treatment technologies for large-scale water purification operation. Highlights Occurrence of various contaminants in drinking water sources are discussed. Human health impacts of exposure to drinking water contaminants are highlighted. Performances and limitations of conventional and advanced water treatment technologies are discussed. Potentials of pristine and modified biochars for drinking water purification are emphasized. Feasibility and importance of biochar-based large-scale water treatment technologies are highlighted. Graphical Abstract

中文翻译:

饮用水源中污染物的发生和生物炭改善水质的潜力:综述

摘要 在这项工作中,根据传统(例如混凝-絮凝、沉淀过滤和氯化)和高级处理技术(例如,膜过滤、臭氧化、和生物过滤)。然而,由于这些方法的明显缺点(例如,消毒副产物 (DBP) 的形成),开发安全饮用水的替代选择是可取的。在这方面,生物炭被认为是解决饮用水中常见污染物(如微生物污染物、无机污染物、重金属、挥发性有机化合物(VOC)、药物和个人护理产品(PPCP))的处理局限性的有效候选者, 和内分泌干扰化学物质 (EDC)。由于生物炭可以与吸附物表现出不同类型的相互作用,因此其吸附过程可以通过多种机制来解释,例如 π-π 电子供体-受体相互作用、络合、沉淀、氢键和静电引力。鉴于生物炭的吸引人的特点(例如,增强的吸附性能、成本效益和环境友好性),我们对用于大规模水净化操作的生物炭水处理技术进行了深入讨论。重点讨论了饮用水源中各种污染物的发生情况。强调了暴露于饮用水污染物对人类健康的影响。讨论了传统和先进水处理技术的性能和局限性。强调了原始和改性生物炭在饮用水净化方面的潜力。强调了基于生物炭的大规模水处理技术的可行性和重要性。图形概要
更新日期:2019-06-26
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