Choi, Hyun-Doc Cho, Jung-Min Baek, Kitae Yang, Jung-Seok Lee, Jae-Young 2024-01-20T22:02:35Z 2024-01-20T22:02:35Z 2021-09-03 2009-01-30 0304-3894 https://pubs.kist.re.kr/handle/201004/132790 The effect of a cationic surfactant on the adsorption of Cr(VI) on activated carbon was investigated using cetylpyridinium chloride (CPC). At a concentration below the critical micelle concentration (CMC) of CPC, the adsorption of CPC and Cr(VI) reached equilibrium within 60 min, while it took 180 min at the concentration above CMC. CPC decreased the adsorption rate of Cr(VI) and increased the adsorption amount of Cr(VI) onto activated carbon. To analyze adsorption phenomena of Cr(VI), adsorption kinetic and isotherm were used and fitted well with the pseudo-second order kinetic model and Langmuir adsorption model, respectively. CPC introduced a cationic functional group on the surface of activated carbon and provided an adsorption site for Cr(VI). (C) 2008 Elsevier B.V. All rights reserved. English ELSEVIER MICELLAR-ENHANCED ULTRAFILTRATION REMOVAL CHARACTERISTICS ANIONIC METALS CHROMATE NITRATE Influence of cationic surfactant on adsorption of Cr(VI) onto activated carbon Article 10.1016/j.jhazmat.2008.04.067 1 JOURNAL OF HAZARDOUS MATERIALS, v.161, no.2-3, pp.1565 - 1568 JOURNAL OF HAZARDOUS MATERIALS 161 2-3 1565 1568 scie scopus 000262292400130 2-s2.0-56249139345 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article MICELLAR-ENHANCED ULTRAFILTRATION REMOVAL CHARACTERISTICS ANIONIC METALS CHROMATE NITRATE Chromate Surfactant Adsorption kinetic Adsorption isotherm