Mondal, M.R. and Tiwary, R.K. and Srivastava, K.K. and Tewary, B. K. (2012) Removal of Iron From Aquous Solution by a Low Cost Adsorbent. Indian Journal of Environmental Protection, 32 (11). pp. 890-897. ISSN 0253-7141

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Abstract

Heavy metals are often present in water and wastewater as contaminants. From the public health and environmental protection point of view, it is important that their concentration should be within the permissible limit. Many technologies for heavy metals removal have been evolved, like ion exchange, chemical precipitation and reverse osmosis which are often expensive. Adsorption is a commonly used method for the removal of heavy metals from aquous solution. However, for the process to be economical the adsorbent should be easily and cheaply available in abundance and it should require minimal or no pretreatment. The present stuy focuses on iron removal by adsorption using blast furnace slag as a low-cost adsorbent. Batch experiments were conducted to determine the effects of pH, contact time, metal concentration, adsorbent dose and particle size. The adsorption of iron was found to be maximum (96.6%) at pH 6, temperature of 30°C, metal concentration of 30 mg/L and contact time of 60 min. One gram of the adsorbent material of 90 micron size, shows maximum adsorption at pH 6 within the contact time of 60 min for the concentration of 30 mg/L iron solution. The adsorption phenomena follows the Langmuir irotherm and the adsorption kinetics follows Pseudo second order reaction with R2 = 0.998 and Y = 0.0337x + 0.05.

Item Type:	Article
Uncontrolled Keywords:	Metal ions, Adsorption, Blast furnace slag, Adsorpton isotherm, Kinetics
Subjects:	Envieronmental Management Group
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	30 Dec 2012 07:31
Last Modified:	30 Dec 2012 07:31
URI:	http://cimfr.csircentral.net/id/eprint/1395

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