Issue

Vol. 17 No. 4 (2005): Vol 17 Issue 4

Adsorption Study of Hexavalent Chromium by Bentonite Clay

Neetu Tewari
Center for Rural Development and Technology, Indian Institute of Technology, New Delhi-110 016
B.K. Guha
Department of Chemical Engineering, Indian Institute of Technology, New Delhi-110 016, India
P. Vasudevan
Center for Rural Development and Technology, Indian Institute of Technology, New Delhi-110 016

Corresponding Author(s) : B.K. Guha

bkguha_iitdelhi@rediffmail.com

Asian Journal of Chemistry, Vol. 17 No. 4 (2005): Vol 17 Issue 4

Abstract

Bentonite, a clay, was used for the adsorption of hexavalent chromium [Cr(VI)] from aqueous solution. Effect of pH, dose of adsorbent and initial concentration was studied on adsorption by bentonite clay. Desorption of Cr(VI) was also studied. Adsorption experiments were conducted in a batch system and found to be maximum at pH 2.0. Equilibrium data fitted well to Langmuir isotherm model. The maximum adsorption capacity of bentonite clay was found to be 5.9 mg/g at an initial pH of 2.0 and 50°C temperature. 0.1 N NaOH could elute > 90% of Cr(VI) and bentonite retains the adsorption capacity without an appreciable loss, for three desorption and adsorption cycles.

Keywords

Chromium Bentonite clay Equilibrium Adsorption Hexavalent chromium Desorption
Tewari, N., Guha, B., & Vasudevan, P. (2016). Adsorption Study of Hexavalent Chromium by Bentonite Clay. Asian Journal of Chemistry, 17(4), 2184–2190. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/13894
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 0 Download : 0