Bhattacharya, Priyankari and Ghosh, Sourja and Sarkar, Subhendu and Majumdar, Swachchha and Bandyopadhyay, Sibdas (2011) Effectiveness of biosorption-assisted microfiltration process for treatment of domestic wastewater. Bioremediation Journal, 15 (4). pp. 206-217. ISSN 1088-9868

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Abstract

The efficiency of a biosorbent prepared from Eichhornia crassipes roots (ECR) was explored for the treatment of domestic sewage water in combination with low-cost ceramic microfiltration membrane. Batch sorption studies were conducted as a function of biosorbent dose, initial chemical oxygen demand (COD) loading, and temperature. Sorption equilibrium data of varying initial COD values (116-800 mg/L) indicated high potential of ECR for COD removal. Using 0.25 g/L of biosorbent dose, the equilibrium adsorption capacity was obtained as 2480 mg/g at 20 degrees C for an initial COD loading of 800 mg/L. Microfiltration study was performed using ceramic membrane made from composition of alpha-alumina and clay. The effect of operating parameters on filtration characteristics was observed in terms of permeate flux. Permeate samples were characterized in terms of various parameters both for the direct filtration, as well as biosorbent-assisted filtration. The filtration behavior of wastewater at varying transmembrane pressure was explained using various membrane fouling models. The results suggested that microfiltration of domestic wastewater with incorporation of biosorbent (0.25 g/L) was highly effective for removal of organic load (>90%), turbidity (>99%), and total suspended solids (TSS) (93-95%) and the treated water quality was suitable for reuse in various purposes, such as gardening, floor and car washing, etc.

Item Type:	Article
Uncontrolled Keywords:	Biosorbent; Ceramic membrane; COD removal; Domestic wastewater; Microfiltration
Subjects:	Processing Science
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	07 Aug 2012 11:51
Last Modified:	07 Aug 2012 11:51
URI:	http://cgcri.csircentral.net/id/eprint/1726

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