Iron scrap derived nano zero-valent iron/biochar activated persulfate for p-arsanilic acid decontamination with coexisting microplastics

作     者：Zihan Shu Hailan Yang Shujing Ye Hong Li Zhiming Yang Chuang Li Xiaofei Tan Shaobo Liu Hou Wang 

作者机构：College of Environmental Science and EngineeringHunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangsha 410082China Shenzhen Research Institute of Hunan UniversityShenzhen 518055China School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 101408China School of Architecture and ArtCentral South UniversityChangsha 410083China School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报(英文版))

年 卷 期：2025年第151卷第5期

页      面：733-746页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(No.52200187) Shenzhen Science and Technology Program(No.JCYJ20220530160411025) Guangdong Basic and Applied Basic Research Foundation(No.2024A1515030273) the Provincial Natural Science Foundation of Hunan(No.2023JJ10012) the Provincial Natural Science Foundation of Hunan(No.2023JJ10012) 

主　　题：P-arsanilic acid Biochar Arsenate and arsenite Microplastics 

摘      要：P-arsanilic acid(AA)has received widespread attention because of its conversion to more toxic inorganic arsenic compounds(arsenate and arsenite)in the natural *** removal process and mechanisms with co-existence of microplastics remain *** this study,biochar loaded with nano zero-valent iron(nZVI)particles(ISBC)was prepared by using iron scrap obtained from a steel works and wood chips collected from a wood processing *** advanced oxidation system of sodium persulfate(PDS)activated by ISBC was applied for AA degradation and inorganic arsenic control in aqueous *** than 99%of the AA was completely degraded by the ISBC/PDS system,and the As(III)on AA was almost completely oxidized to As(V)and finally removed by ***_(3)−inhibited the removal of AA by the ISBC/PDS system,while Cl^(−)had a dual effect that showing inhibition at low concentrations yet promotion at high *** effect of microplastics on the degradation of AA by the ISBC/PDS system was further investigated due to the potential for combined microplastic and organic arsenic contamination in rural/remote *** were found to have little effect on AA degradation in the ISBC/PDS system,while affect the transport of inorganic arsenic generated from AA ***,this study provides new insights and methods for efficient removal of p-arsanilic acid from water with coexisting microplastics.