Abstract
Hydrous iron oxide impregnated alginate beads were developed for effective arsenic removal from water. As(III) adsorption was maximized at neutral pH while As(V) adsorption was higher in acidic conditions. Adsorption efficiency for both As(III) and As(V) mostly increased with increasing iron loading, but As(V) adsorption slightly decreased at high iron loading. Phosphate showed a pronounced interfering effect, especially at high concentration. Kinetics data fitted to pseudo-second-order and intra-particle diffusion model suggested chemisorption and intra-particle diffusion might mainly govern As(III) and As(V) adsorption, respectively. Beads were regenerated using NaOH solution and successfully reused for multiple cycles.
| Original language | English |
|---|---|
| Pages (from-to) | 277-286 |
| Number of pages | 10 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 35 |
| DOIs | |
| Publication status | Published - 2016 Mar 25 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
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Arsenic removal from aqueous solutions by adsorption onto hydrous iron oxide-impregnated alginate beads. / Sigdel, Abinashi; Park, Jeongwon; Kwak, Hyoeun; Park, Pyungkyu.
In: Journal of Industrial and Engineering Chemistry, Vol. 35, 25.03.2016, p. 277-286.Research output: Contribution to journal › Article
TY - JOUR
T1 - Arsenic removal from aqueous solutions by adsorption onto hydrous iron oxide-impregnated alginate beads
AU - Sigdel, Abinashi
AU - Park, Jeongwon
AU - Kwak, Hyoeun
AU - Park, Pyungkyu
PY - 2016/3/25
Y1 - 2016/3/25
N2 - Hydrous iron oxide impregnated alginate beads were developed for effective arsenic removal from water. As(III) adsorption was maximized at neutral pH while As(V) adsorption was higher in acidic conditions. Adsorption efficiency for both As(III) and As(V) mostly increased with increasing iron loading, but As(V) adsorption slightly decreased at high iron loading. Phosphate showed a pronounced interfering effect, especially at high concentration. Kinetics data fitted to pseudo-second-order and intra-particle diffusion model suggested chemisorption and intra-particle diffusion might mainly govern As(III) and As(V) adsorption, respectively. Beads were regenerated using NaOH solution and successfully reused for multiple cycles.
AB - Hydrous iron oxide impregnated alginate beads were developed for effective arsenic removal from water. As(III) adsorption was maximized at neutral pH while As(V) adsorption was higher in acidic conditions. Adsorption efficiency for both As(III) and As(V) mostly increased with increasing iron loading, but As(V) adsorption slightly decreased at high iron loading. Phosphate showed a pronounced interfering effect, especially at high concentration. Kinetics data fitted to pseudo-second-order and intra-particle diffusion model suggested chemisorption and intra-particle diffusion might mainly govern As(III) and As(V) adsorption, respectively. Beads were regenerated using NaOH solution and successfully reused for multiple cycles.
UR - http://www.scopus.com/inward/record.url?scp=84956645466&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84956645466&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2016.01.005
DO - 10.1016/j.jiec.2016.01.005
M3 - Article
VL - 35
SP - 277
EP - 286
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
SN - 1226-086X
ER -