Role of Cu on zero valent bimetallic Cu—Fe in arsenic removal with gas bubbling

Arsenic (As) removal by nano bimetallic Cu‐Fe synthesized by in‐situ (Cu‐Fe)IS and impregnation (Cu‐Fe)IM techniques was studied. Synthesized Cu‐Fe by both techniques provided smaller particles than NZVI particles. (Cu‐Fe)IM showed higher efficiency in As removal, compared to (Cu‐Fe)IS and pristine...

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Bibliographic Details
Published in:Environmental progress 2017-09, Vol.36 (5), p.1449-1457
Main Authors: Nakseedee, Piyanate, Tanboonchuy, Visanu, Khemthong, Pongtanawat, Grisdanurak, Nurak, Liao, Chih‐Hsiang
Format: Article
Language:English
Subjects:
Arsenic
Arsenic removal
bimetal
Bimetals
Bubbling
Copper oxides
Cu‐NZVI
gas bubbling system
Iron
Particulates
Structural analysis
Synthesis
XANES
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Summary:Arsenic (As) removal by nano bimetallic Cu‐Fe synthesized by in‐situ (Cu‐Fe)IS and impregnation (Cu‐Fe)IM techniques was studied. Synthesized Cu‐Fe by both techniques provided smaller particles than NZVI particles. (Cu‐Fe)IM showed higher efficiency in As removal, compared to (Cu‐Fe)IS and pristine NZVI. Batch experiments were performed by varying percent Cu loading (0–30% by wt). As(III) was removed completely by 10 wt % Cu loading on NZVI under an IM technique. It also provided double removal rate compared to pristine NZVI. X‐ray absorption near edge structure analysis supported that a mixed phases of Cu2O and CuO in (Cu‐Fe)IM enhanced As removal toward co‐precipitating with iron species about 20% for both As(III) and As(V) removal. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1449–1457, 2017
ISSN:1944-7442
1944-7450
DOI:10.1002/ep.12603