Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 32    No. 8    August 2022

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High-rate removal of As(III) from aqueous system with sulfhydryl magnetic biological bamboo charcoal nanocomposites prepared by chemical co-precipitation method
Yi-wei LUO1, Si WAN2,3,4, Jiang-jun XIAO2,5, Dai-she WU1

1. College of Resources Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China;
2. College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
3. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
4. Hunan Research Institute for Nonferrous Metals Co., Ltd., Changsha 410007, China;
5. Hunan Research Academy of Environmental Sciences, Changsha 410014, China

Abstract:Sulfhydryl magnetic biological bamboo charcoal nanocomposite (BBC@nFe-SH) was prepared by chemical co-precipitation method for the robust capture of As(III) from aqueous solutions. The novel BBC@nFe-SH shows favorable magnetic field strength (83376 A/m), which enables BBC@nFe-SH to be quickly recovered from aqueous solution. The maximum As(III) adsorption capacity is as high as 98.63 mg/g at pH 5.0 and 40 °C, reaching reaction equilibrium within 120 min. Various characterizations (e.g., SEM, FTIR, VSM and XPS) suggest that As(III) prefers to coordinate with surface oxygen groups bonded to the surface. BBC@nFe-SH displayed high stability and recyclability throughout the removal process, which could be easily activated by 1 mol/L NaOH after usage. Thus, the novel BBC@nFe-SH has promising applications for As(III) treatment.


Key words: arsenic-containing wastewater; bamboo biochar; chemical co-precipitation; adsorption; recyclability; wastewater treatment

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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