Adsorption of arsenic from aqueous solution using magnetic graphene oxide

International Technical Postgraduate Conference

Sherlala, A.I.A.^1,2 ; Raman, A.A.^1 ; Bello, M.M.^1

Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^1

Department of Chemical Engineering, College of Engineering Technology, Janzour, Libya^2

关键词: Adsorption capacities;    Adsorption efficiency;    Adsorption experiment;    Adsorption of arsenics;    Central composite designs;    High adsorption capacity;    Initial concentration;    Operational parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/210/1/012007/pdf
DOI  :  10.1088/1757-899X/210/1/012007

来源: IOP

【 摘 要 】

A binary of graphene oxide (GO) and iron oxide (IO) was prepared and used for the removal of arsenic from aqueous solution. The synthesized compound was characterized using XRD analysis. The prepared composite was used for the adsorption of arsenic from aqueous solution. Central Composite Design was used to design the adsorption experiments and to investigate the effects of operational parameters (initial concentration of arsenic, adsorbent dosage, pH and time) on the adsorption capacity and efficiency. The adsorbent shows a high adsorption capacity for the arsenic. The adsorption efficiency ranges between 33.2 % and 99.95 %. The most significant factors affecting the adsorption capacity were found to be the initial concentration of arsenic and the adsorbent dosage. The initial pH of the solution slightly affects the adsorption capacity, with the maximum adsorption capacity occurring around pH 6 - 7. Thus, the developed adsorbent has a potential for effective removal of arsenic from aqueous solution.