Evaluation of amine-functionalized acrylic ion exchange fiber for chromium(VI) removal using flow-through experiments modeling and real wastewater
- Evaluation of amine-functionalized acrylic ion exchange fiber for chromium(VI) removal using flow-through experiments modeling and real wastewater
- 최웅수; 이상협; 최재우; Aram Nam; Seong-Taek Yun; Jeong-Ann Park
- Amine-functionalized acrylic fiber; Ion exchange fiber; Chromium(VI); Fixed-bed column; Breakthrough curve model analysis; Real industrial plating wastewater
- Issue Date
- Journal of industrial and engineering chemistry
- VOL 66-195
- 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.
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