文献类型：期刊文献

英文题名：Hierarchical Anion Exchange and Reverse Electron Transfer in Ldh/Peroxymonosulfate System for Roxarsone Elimination

作者：Pei, Wenkai[1]; Zheng, Yifan[2]; Gao, Jianyu[1]; Lei, Juying[1,5]; Liu, Yongdi[1,5]; Zhou, Liang[1,3,4,5]; Zhang, Jinlong[2]; Wang, Yu[1]

机构：[1] National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China; [2] Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization, Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [3] Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan; [4] State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; [5] Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240121211)

语种：英文

外文关键词：Electron transitions - Electron transport properties - Ions - Oxidation - Oxygen

摘要：Roxarsone (ROX) is the main form of As pollution in the world, and developing effective methods for its elimination is beneficial to human health and ecological environment. Herein, we report glutaraldehyde-crosslinked chitosan encapsulated CoCe-LDH as an outstanding catalyst for the advanced oxidation of ROX and the efficient adsorption of inorganic arsenic. 100% of ROX and more than 98.5% of As(III)/As(V) were eliminated, and over 99.3% of remained inorganic arsenic was oxidized to low toxicity As(V) in the PMS-activation system, and some specific properties of LDH are considered the main reasons. The hierarchical anion exchange has been confirmed to be beneficial for constructing a high concentration PMS inter layer microenvironment. And the unique reverse electron transfer process induced the 100% selective production of singlet oxygen. This work not only develops an advanced ROX removal method, but also provides a new understanding of LDH-based advanced oxidation process. ? 2024, The Authors. All rights reserved.