Removal of Pb, Cu, and Fe from battery manufacture wastewater by chitosan produced from silkworm chrysalides as a low-cost adsorbent

In this work, it was investigated the best ChSC deacetylation time (DT) for the removal of Pb2+ and Cu2+ from battery manufacture wastewater. Bath experiments were used to determine the best adsorption conditions. The best DT for Cu2+ removal was 180min (92% deacetylation) and for Pb2+ removal was 9...

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Bibliographic Details
Published in:Reactive & functional polymers 2008-02, Vol.68 (2), p.634-642
Main Authors: Paulino, Alexandre Tadeu, Santos, Lidia Brizola, Nozaki, Jorge
Format: Article
Language:English
Online Access:Get full text
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Summary:In this work, it was investigated the best ChSC deacetylation time (DT) for the removal of Pb2+ and Cu2+ from battery manufacture wastewater. Bath experiments were used to determine the best adsorption conditions. The best DT for Cu2+ removal was 180min (92% deacetylation) and for Pb2+ removal was 90min (80% deacetylation). The maximum adsorption capacities of Pb-ChSC and Cu-ChCS were 0.4247mmolg-1 and 1.5953mmolg-1, respectively, for contact time of 24h, pH 5.0, particle size from 300 to 425mum, and temperature of 20+/-0.1 deg C. Metal adsorption onto ChSC was evaluated by Langmuir and Freundlich isotherms. An experimental column packed with ChCS was used to remove Fe3+, Cu2+, and Pb2+ from battery wastewater. Experimental column results were obtained by plotting C/C0 against time. Metal adsorption onto ChSC in column was higher at pH 5.0 than pH 3.0. The results of this work support the use of ChSC in battery wastewater treatment.
ISSN:1381-5148
DOI:10.1016/j.reactfunctpolym.2007.10.028