A study on Biosorptive Removal of Cd from Wastewater using Chironomid Larvae (Diptera: Chironomidae)


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Title A study on Biosorptive Removal of Cd from Wastewater using Chironomid Larvae (Diptera: Chironomidae)
Creator Bae, Yeon Jae
Ryoo, Keon Sang
Cho, Kijong
Baek, Min Jeong
Subject Chironomid larvae; Cd removal; Wastewater; Kinetic; Isotherm
Description Cadmium (Cd) has caused serious public health problem due to its toxic nature. It is necessary to find a cost-effective method to dispose of wastewater containing Cd. Chironomid larvae as an alternative to conventional adsorbents were applied to remove Cd from wastewater. The sorption studies of Cd were carried out using laboratory-reared Glyptotendipes tokunagai (Diptera: Chironomidae) larvae. Kinetic and sorption capacity of chironomid larvae for Cd were determined by means of controlled experiments in a batch system. It was observed that removal efficiency of Cd was largely concentration dependent and more effective in lower concentration. At equilibrium, Cd was removed up to roughly 53 %. The sorption kinetics were found to conform to the pseudo-first-order kinetic model with a good correlation. Equilibrium sorption data were best fitted to the both Freundlich and Langmuir isotherm models owing to their correlation coefficient R2 values greater than 0.99. Considering the values obtained from isotherm constants 1/n and r, it is confirmed that Cd is sorbed favorably by chironomid larvae. With its relatively high removal capability for Cd, Chironomid larvae have enormous potential for application in wastewater treatment technologies. 
Publisher CIRWORLD
Date 2014-04-04
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Identifier http://cirworld.com/index.php/jac/article/view/2272
Source JOURNAL OF ADVANCES IN CHEMISTRY; Vol 10 No 3; 2415-2425
Language eng
Relation http://cirworld.com/index.php/jac/article/view/2272/2216

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