Biosorption of Toxic Hexavalent Chromium from Aqueous Solutions by Low-Cost Waste Biomaterial

Itankar Nilisha P. and Patil Yogesh B. (2014) Biosorption of toxic hexavalent chromium from aqueous solutions by low-cost waste biomaterial. International Journal of Chemical Sciences. 12(2): 479-488 (Scopus; ISSN: 0972-768X)

10 Pages Posted: 13 Nov 2014

See all articles by Nilisha Itankar

Nilisha Itankar

Symbiosis International University

Yogesh Patil

Symbiosis International (Deemed University), Pune, India

Date Written: November 13, 2014

Abstract

Chromium metal has unique properties and therefore finds large number of applications in industries like chrome-plating, steel and alloy, leather tanning and ammunition factories. These industries consequently, discharge large quantities of hexavalent chromium (Cr6 ) containing effluents. Since chromium is toxic to all life forms, its removal from effluents is the key. Conventional processes used are highly energy-intensive and economically unattractive. Biosorption, a technically feasible and economical process has gained immense creditability in the recent years. The present study explores the possibility of using biosorption process for the removal of Cr6 from aqueous solutions using low-cost biomaterial viz. saw dust (SD). Optimum parameters for maximum biosorption of Cr6 (10 mg/L) were as follows: pH 1-4, contact time 60 min and biomass quantity of 1 g/10 mL. Biosorption conformed to the Langmuir and Freundlich adsorption isotherms (R2 = > 0.97). It was found that the equilibrium sorption capacity of the sorbent increased with increasing initial concentration of Cr6 from 5 to 300 mg/L. Overall, the study showed that SD has immense potential as “biomaterial” for its use in the removal/recovery of hexavalent chromium from aqueous industrial solutions.

Keywords: Biomaterial, Biosorption, Hexavalent chromium, Low-cost biomass, Saw dust

Suggested Citation

Itankar, Nilisha and Patil, Yogesh, Biosorption of Toxic Hexavalent Chromium from Aqueous Solutions by Low-Cost Waste Biomaterial (November 13, 2014). Itankar Nilisha P. and Patil Yogesh B. (2014) Biosorption of toxic hexavalent chromium from aqueous solutions by low-cost waste biomaterial. International Journal of Chemical Sciences. 12(2): 479-488 (Scopus; ISSN: 0972-768X). Available at SSRN: https://ssrn.com/abstract=2523782

Nilisha Itankar

Symbiosis International University ( email )

SB Road, Lavale
Mulshi
Pune, Maharashtra 411004
India

Yogesh Patil (Contact Author)

Symbiosis International (Deemed University), Pune, India ( email )

Lavale (Hill top)
Gram: Lavale, Tal: Mulshi, Dist: Pune
Pune, Maharashtra 412115
India

HOME PAGE: http://https://siu.edu.in/research.php

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