Application of Fe(Ⅵ)in abating contaminants in water:State of art and knowledge gaps  

作　　者：Shuchang Wang Binbin Shao Junlian Qiao Xiaohong Guan 

机构地区：[1]State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai,200092,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai,200092,China [3]International Joint Research Center for Sustainable Urban Water System,Tongji University,Shanghai,200092,China

出　　处：《Frontiers of Environmental Science & Engineering》2021年第5期7-27,共21页环境科学与工程前沿（英文）

基　　金：the National Natural Science Foundation of China(Grant No.21976133);the National Key Research and Development Program of China(No.2019YFC1805202).

摘　　要：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.

关 键 词：FERRATE OXIDATION DISINFECTION COAGULATION Enhancement 

分 类 号：X703[环境科学与工程—环境工程]