Soloman, P.A. and Basha, C.A. and Velan, M. and Balasubramanian, N. and Marimuthu, P. (2009) Augmentation of biodegradability of pulp and paper industry wastewater by electrochemical pre-treatment and optimization by RSM. Separation and Purification Technology, 69 (1). pp. 109-117. ISSN 1383-5866

PDF Restricted to Registered users only Download (576Kb) | Request a copy

Abstract

Biological treatment of pulp and paper industry wastewater is made effective by giving a simple electrochemical pre-treatment. Biodegradability index is found to be improved from 0.11 to 0.46 by a short (6.9 min) treatment in mild conditions (current density: 112.9Am−2, pH 7.3). The optimal operating point for maximum biodegradability has been found out using response surface methodology (RSM). It is also noticed that there exists an optimal operating point for maximum biodegradability. The specific energy consumption and current efficiency figures at the optimal condition are also promising. Moreover there is considerable reduction in the pollutant load (COD removal: 55% and color removal: 87%). Performance of the process at this operating point has been validated by running biological treatment. Considerable reduction in the requirement of biological reactor volume can be expected by giving such a simple electrochemical pre-treatment.

Item Type:	Article
Uncontrolled Keywords:	Electrochemical pre-treatment; Pulp and paper wastewater; Biodegradability; COD removal; Response surface methodology
Subjects:	Pollution Control
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	05 Mar 2012 09:50
Last Modified:	05 Mar 2012 09:50
URI:	http://cecri.csircentral.net/id/eprint/1191

Actions (login required)

View Item