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Application of Fe(VI) in abating contaminants in water: State of art and knowledge gaps
Frontiers of Environmental Science & Engineering ( IF 6.4 ) Pub Date : 2020-11-04 , DOI: 10.1007/s11783-020-1373-3
Shuchang Wang , Binbin Shao , Junlian Qiao , Xiaohong Guan

The past two decades have witnessed the rapid development and wide application of Fe(VI) in the field of water de-contamination because of its environmentally benign character. Fe(VI) has been mainly applied as a highly efficient oxidant/disinfectant for the selective elimination of contaminants. The in situ generated iron(III) (hydr)oxides with the function of adsorption/coagulation can further increase the removal of contaminants by Fe(VI) in some cases. Because of the limitations of Fe(VI) per se, various modified methods have been developed to improve the performance of Fe(VI) oxidation technology. Based on the published literature, this paper summarized the current views on the intrinsic properties of Fe(VI) with the emphasis on the self-decay mechanism of Fe(VI). The applications of Fe (VI) as a sole oxidant for decomposing organic contaminants rich in electron-donating moieties, as a bi-functional reagent (both oxidant and coagulant) for eliminating some special contaminants, and as a disinfectant for inactivating microorganisms were systematically summarized. Moreover, the difficulties in synthesizing and preserving Fe(VI), which limits the large-scale application of Fe (VI), and the potential formation of toxic byproducts during Fe(VI) application were presented. This paper also systematically reviewed the important nodes in developing methods to improve the performance of Fe(VI) as oxidant or disinfectant in the past two decades, and proposed the future research needs for the development of Fe(VI) technologies.



中文翻译:

Fe(VI)在减少水中污染物中的应用:技术现状和知识差距

在过去的二十年中,由于其对环境的友好特性,Fe(VI)在水污染领域迅速发展并得到广泛应用。Fe(VI)主要用作选择性清除污染物的高效氧化剂/消毒剂。在某些情况下,具有吸附/凝聚功能的原位生成的氧化铁(III)可以进一步提高Fe(VI)对污染物的去除。由于Fe(VI)本身的局限性,已开发出各种改进的方法来改善Fe(VI)氧化技术的性能。基于已发表的文献,本文总结了当前对Fe(VI)固有性质的看法,重点是Fe(VI)的自衰变机理。系统地总结了铁(VI)作为分解富含电子给体部分的有机污染物的唯一氧化剂,作为消除某些特殊污染物的双功能试剂(氧化剂和凝结剂)以及使微生物失活的消毒剂的应用。 。此外,提出了合成和保存Fe(VI)的困难,这限制了Fe(VI)的大规模应用,以及在Fe(VI)施用期间可能形成有毒副产物的问题。本文还系统地回顾了过去二十年中开发提高Fe(VI)作为氧化剂或消毒剂性能的方法的重要节点,并提出了发展Fe(VI)技术的未来研究需求。概述了作为消除某些特殊污染物的双功能试剂(氧化剂和凝结剂)以及作为灭活微生物的消毒剂。此外,提出了合成和保存Fe(VI)的困难,这限制了Fe(VI)的大规模应用,以及在Fe(VI)施用期间可能形成有毒副产物的问题。本文还系统地回顾了过去二十年中开发提高Fe(VI)作为氧化剂或消毒剂性能的方法的重要节点,并提出了对Fe(VI)技术发展的未来研究需求。概述了作为消除某些特殊污染物的双功能试剂(氧化剂和凝结剂)以及作为灭活微生物的消毒剂。此外,提出了合成和保存Fe(VI)的困难,这限制了Fe(VI)的大规模应用,以及在Fe(VI)施用期间可能形成有毒副产物的问题。本文还系统地回顾了过去二十年中开发提高Fe(VI)作为氧化剂或消毒剂性能的方法的重要节点,并提出了发展Fe(VI)技术的未来研究需求。限制了Fe(VI)的大规模应用,并提出了在Fe(VI)施用过程中潜在形成有毒副产物的问题。本文还系统地回顾了过去二十年中开发提高Fe(VI)作为氧化剂或消毒剂性能的方法的重要节点,并提出了对Fe(VI)技术发展的未来研究需求。限制了Fe(VI)的大规模应用,并提出了在Fe(VI)施用过程中潜在形成有毒副产物的问题。本文还系统地回顾了过去二十年中开发提高Fe(VI)作为氧化剂或消毒剂性能的方法的重要节点,并提出了对Fe(VI)技术发展的未来研究需求。

更新日期:2020-11-09
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