Evaluation of amine-functionalized acrylic ion exchange fiber for chromium(VI) removal using flow-through experiments modeling and real wastewater

Title
Evaluation of amine-functionalized acrylic ion exchange fiber for chromium(VI) removal using flow-through experiments modeling and real wastewater
Authors
최웅수이상협최재우Aram NamSeong-Taek YunJeong-Ann Park
Keywords
Amine-functionalized acrylic fiber; Ion exchange fiber; Chromium(VI); Fixed-bed column; Breakthrough curve model analysis; Real industrial plating wastewater
Issue Date
2018-10
Publisher
Journal of industrial and engineering chemistry
Citation
VOL 66-195
Abstract
Poly(acrylo-amidino diethylenediamine) (PADD), fibrous form of anion exchangers, was synthesized to remove Cr(VI). The experimental results were described well by the Langmuir isotherm model (Qmax = 4.67 mmol/g) and pseudo second-order model. The Cr(VI) adsorption capacities were increased by decreasing pH because the – NH2 in PADD become more positively charged. During five regeneration cycles, Cr(VI) adsorption capacity retained over 95.96% of the initial capacity. Color of the PADD (yellow) changed to green owing to Cr(VI) reduction to Cr(III) and amine transformed into a oxidized form (imine). The PADD was successfully treated Cr(VI) in two different concentrations of industrial wastewater.
URI
http://pubs.kist.re.kr/handle/201004/68105
ISSN
1226-086X
Appears in Collections:
KIST Publication > Article
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