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Kinetic Studies of Adsorption of Lead(II) from Aqueous Solution by Wine‐Processing Waste Sludge
Author(s) -
Li Yuanshen,
Liu Chengchung,
Chiou Chyowsan
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143005x
Subject(s) - adsorption , aqueous solution , wine , chemistry , waste management , wastewater , lead (geology) , pulp and paper industry , environmental science , environmental engineering , organic chemistry , food science , engineering , geomorphology , geology
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.