Title: Use of chemically treated sawdust for chromium removal from aqueous solutions: effect of process parameters

 

Author: Manjeet Bansal; Diwan Singh; V.K. Garg

 

Addresses:
Department of Civil Engineering, National Institute of Technology, Kurukshetra 136119, India
Department of Civil Engineering, National Institute of Technology, Kurukshetra 136119, India
Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India

 

Journal: Int. J. of Environment and Waste Management, 2012 Vol.10, No.2/3, pp.190 - 200

 

Abstract: This paper reports the effect of various process parameters on the removal of chromium from aqueous solution using formaldehyde-treated timber industry waste (sawdust). The adsorbent was characterised by Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Analysis (EDAX). Influence of chromium concentration, pH, adsorbent dose and contact time on chromium removal from aqueous solution has been investigated. Maximum chromium removal was 83.5% at pH 2 with 20 g L-1 adsorbent dose and 120 min contact time. Reusability of the adsorbent was examined by desorption in which HCl eluted 76% chromium from exhausted adsorbent.

 

Keywords: adsorption; chemically treated sawdust; pH; desorption; wastewater treatment; chemical treatment; chromium removal; aqueous solutions; process parameters; timber industry; waste treatment; reusability.

 

DOI: http://dx.doi.org/10.1504/IJEWM.2012.048370

 

Available online 01 Aug 2012

 

 

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