Kinetic Studies of Adsorption of Lead(II) from Aqueous Solution by Wine-Processing Waste Sludge
Abstract:A waste sludge produced from a wine-processing wastewater treatment process was used as an adsorbent to removal of heavy metal-lead(II) from aqueous solution. Results of kinetic experiments demonstrated that the adsorption was effective and rapid. Four different kinds of adsorption kinetic models (i.e., pseudo-first-order, pseudo-second-order, and two intraparticular mass diffusion models) were used to investigate the adsorption mechanisms. A normalized standard deviation was used to find the best adsorption kinetic model for the removal of lead(II) by the sludge. The comparison shows that the kinetic adsorption data can be well-described by the pseudo-second-order adsorption model and that sorption might be a rate-limiting control. The adsorption-rate constant and adsorption capacity of pseudo-second-order adsorption equation were calculated. The parameters (initial lead(II) concentration, sludge-particle size, and sludge dosages), which affect the adsorption capacity of sludge, were discussed by using the pseudo-second-order adsorption equation.
Document Type: Research Article
Publication date: March 1, 2006
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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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