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Kinetic and Thermodynamic Studies on the Adsorption of Anionic Surfactant on Quaternary Ammonium Cationic Cellulose

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Abstract:

Removal of anionic surfactants from aqueous solutions by adsorption onto quaternary ammonium cationic cellulose (QACC) was investigated. The effects of solution acidity, initial concentration, adsorption time, and temperature on the adsorption of sodium dodecylbenzene sulfonate (SDBS), sodium lauryl sulfate (SLS), and sodium dodecyl sulfonate (SDS) were studied. The kinetic experimental data fit well with the pseudo-second-order model; the rate constant of the adsorption increased with temperature. The values of apparent activation energy for the adsorption were calculated as ranging from 10.2 to 17.4 kJ/mol. The adsorption isotherm can be described by the Langmuir isotherm. The values of thermodynamic parameters (ΔH 0, ΔS 0, and ΔG 0) for the adsorption indicated that this process was spontaneous and endothermic. At 318 K, the saturated adsorption capacities of QACC for SDBS, SLS, and SDS were 1.75, 1.53, and 1.39 mmol/g, respectively. The adsorption process was mainly chemisorption and partially physisorption. The results show that QACC is effective for the removal of anionic surfactants.

Keywords: adsorption; anionic surfactant; kinetics; quaternary ammonium cationic cellulose; thermodynamics

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143009X12529484816079

Affiliations: School of Environment and Architecture, University of Shanghai for Science and Technology Shanghai P. R. China, URL: http://www.w3.org/1999/xlink

Publication date: June 1, 2010

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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