Simultaneous removal of Cd(II)and As(III)from co-contaminated aqueous solution byα-FeOOH modified biochar

作     者：Sihang Zhu Ting Qu Muhammad Kashif Irshad Jianying Shang 

作者机构：College of Land Science and TechnologyChina Agricultural UniversityBeijing 100193People’s Republic of China 

出 版 物：《Biochar》 (生物炭（英文）)

年 卷 期：2020年第2卷第1期

页      面：81-92页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：This work was supported by the National Key Research and Development Program of China(2017YFD0801503) the National Natural Science Foundation of China(41771255) 

主　　题：α-FeOOH Biochar Cadmium Arsenic Adsorption mechanisms 

摘      要：A novelα-FeOOH modified wheat straw biochar(α-FeOOH@BC)was developed and the findings of the current study showed thatα-FeOOH@BC is an efficient material for the simultaneous removal of cations(Cd(II))and anions(As(III))from aqueous *** SEM,FTIR,and XRD analysis proved thatα-FeOOH@BC was covered byα-*** the single adsorption system,the maximum adsorption capacities ofα-FeOOH@BC for Cd(II)and As(III)were 62.9 and 78.3 mg/g,*** the dual adsorption system,the maximum adsorption capacities ofα-FeOOH@BC for Cd(II)and As(III)dropped to 39.3 and 67.2 mg/g,*** adsorption capacities of Cd(II)and As(III)byα-FeOOH@BC were much higher by BC andα-FeOOH both in single and dual adsorbate *** adsorption results were well fitted by the Langmuir and pseudo-second-order kinetics *** Cd(II)and As(III)co-adsorption onα-FeOOH@BC had a competitive effect,and the dominant adsorption mechanisms were co-precipitation and ion *** study showed thatα-FeOOH@BC could be an effective remediation material for Cd(II)and As(III)co-adsorption from aqueous environment.