Title: Modified crab shell particles for the removal of lead[II] ions from aqueous solutions

Authors: Ramalingham Senthilkumar; Josephraj Jegan; Puthugramam Venkitakrishnan Ramachandra Iyer; Manickam Velan

Addresses: Department of Chemical Engineering, Sri Venkateswara College of Engineering, Sriperumbudur 602 105, India. ' Department of Chemical Engineering, Sri Venkateswara College of Engineering, Sriperumbudur 602 105, India. ' Department of Chemical Engineering, Sri Venkateswara College of Engineering, Sriperumbudur 602 105, India. ' Department of Chemical Engineering, Anna University, Chennai 600 025, India

Abstract: The ability of crab shell particles to remove lead[II] was evaluated in a batch reactor and in a fixed-bed column. The binding of lead[II] by crab shell was found to be affected significantly by pH, with maximum sorption capacity 714 mg/g observed at pH 4. The sorption isotherm of lead[II] on crab shell particles was modelled by the application of Langmuir followed by Sips, Redlich-Peterson and Freundlich. The kinetic data followed pseudo-second-order kinetics. A glass column (2 cm I.D and 35 cm height) was used to study the continuous lead[II] biosorption performance of crab shell particles with different bed heights.

Keywords: biosorption; crab shells; kinetics; packed bed column; lead removal; Portunus sanguinolentus; crab shell particles.

DOI: 10.1504/IJEWM.2012.046389

International Journal of Environment and Waste Management, 2012 Vol.9 No.3/4, pp.232 - 244

Published online: 13 Dec 2014 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article