期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 57, 期 39, 页码 12959-12972出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.8b03273
关键词
-
资金
- Board of Research in Nuclear Sciences (BRNS) [2013/37C/55/BRNS]
Herein, we report a simple and rapid route for the fabrication of a new bifunctionalized thiol-iron composite (TH-Fe) as an affordable biosorbent for the removal of As(III) and As(V) from aqueous systems. The proposed work has advantages in assessment to conventional chemicals as a new potential reductant-cum-surface modifier in nanochemistry that integrates an intrinsically capable high affinity group for exceptional arsenic-sorption potential. The as- prepared TH-Fe composite was characterized with well- dispersed surface functionalized iron particles of 8 nm via X-ray diffraction and transmission electron microscopy analysis. Characterization supported substantial intensification in arsenic sorption capability for the surface-functionalized iron composite. The synthesized bifunctional TH-Fe composite exhibited almost complete (>99% residual concentration <0.5 ppb) and quick removal of both arsenic species, via coordinate covalent bonds, within the recommended 10 ppb range of the World Health Organization. Also the TH-Fe composite was regenerated using 0.1 M NaOH solution, and was successfully reused for 15 cycles. Thus, the outcome of this work will help to develop a cost-effective technological solution of practical applicability based on a novel biosorbent for the removal of arsenic from arsenic contaminated water.
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