PMID- 20692091 OWN - NLM STAT- MEDLINE DCOM- 20101228 LR - 20131121 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 183 IP - 1-3 DP - 2010 Nov 15 TI - Adsorption of surfactant micelles and Cd2+/Zn2+ in micellar-enhanced ultrafiltration. PG - 287-93 LID - 10.1016/j.jhazmat.2010.07.022 [doi] AB - Micellar-enhanced ultrafiltration (MEUF) is a powerful treatment developed to remove heavy metals from wastewater. Efficient removal of Cd(2+)/Zn(2+) from wastewater was performed by MEUF using a polysulfone hollow ultrafiltration membrane, with sodium dodecyl sulfate (SDS) as the surfactant. The adsorption of surfactant micelles and Cd(2+)/Zn(2+) in MEUF was studied by changing the surfactant dosage and the Cd(2+)/Zn(2+) concentration in the feed. In addition, kinetics, adsorption isotherms, and thermodynamic rules were analyzed, and X-ray photoelectron spectroscopy (XPS) was conducted. It was found that when the Cd(2+)/Zn(2+) feed concentration was 50 mg/L, and the SDS dosage reached 2.15 g/L, the concentration of heavy metal ions in the permeate stabilized at around 1-4 mg/L, and the adsorption of Cd(2+)/Zn(2+) on SDS micelles followed second-order kinetics and the Langmuir isotherm laws. Adsorption is a spontaneous endothermic process in which the adsorption force is principally the attraction of opposite electrical charges. CI - Copyright (c) 2010 Elsevier B.V. All rights reserved. FAU - Huang, Jin-Hui AU - Huang JH AD - College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China. huangjinhui_59@163.com FAU - Zeng, Guang-Ming AU - Zeng GM FAU - Zhou, Chun-Fei AU - Zhou CF FAU - Li, Xue AU - Li X FAU - Shi, Liang-Jing AU - Shi LJ FAU - He, Song-Bao AU - He SB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100714 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Metals, Heavy) RN - 0 (Micelles) RN - 0 (Surface-Active Agents) RN - 0 (Water Pollutants, Chemical) RN - 00BH33GNGH (Cadmium) RN - J41CSQ7QDS (Zinc) SB - IM MH - *Adsorption MH - Cadmium/*isolation & purification MH - Kinetics MH - Metals, Heavy/isolation & purification MH - Micelles MH - Surface-Active Agents/chemistry MH - Ultrafiltration/*methods MH - Water Pollutants, Chemical/*isolation & purification MH - Zinc/*isolation & purification EDAT- 2010/08/10 06:00 MHDA- 2010/12/29 06:00 CRDT- 2010/08/10 06:00 PHST- 2010/04/07 00:00 [received] PHST- 2010/07/06 00:00 [revised] PHST- 2010/07/06 00:00 [accepted] PHST- 2010/08/10 06:00 [entrez] PHST- 2010/08/10 06:00 [pubmed] PHST- 2010/12/29 06:00 [medline] AID - S0304-3894(10)00907-6 [pii] AID - 10.1016/j.jhazmat.2010.07.022 [doi] PST - ppublish SO - J Hazard Mater. 2010 Nov 15;183(1-3):287-93. doi: 10.1016/j.jhazmat.2010.07.022. Epub 2010 Jul 14.