World Journal of Environmental Engineering
ISSN (Print): 2372-3076 ISSN (Online): 2372-3084 Website: http://www.sciepub.com/journal/wjee Editor-in-chief: Apply for this position
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World Journal of Environmental Engineering. 2013, 1(2), 16-20
DOI: 10.12691/wjee-1-2-1
Open AccessArticle

Removal of Lignin from Wastewater through Electro-Coagulation

Ravi Shankar1, Lovjeet Singh1, Prasenjit Mondal1, and Shri Chand1

1Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India

Pub. Date: May 15, 2013

Cite this paper:
Ravi Shankar, Lovjeet Singh, Prasenjit Mondal and Shri Chand. Removal of Lignin from Wastewater through Electro-Coagulation. World Journal of Environmental Engineering. 2013; 1(2):16-20. doi: 10.12691/wjee-1-2-1

Abstract

The present work deals with the removal of lignin (expressed as COD removal) from synthetic wastewater through electro coagulation in a batch reactor using Aluminum as a sacrificial electrode. Effect of various parameters such as current density, pH, NaCl concentration and treatment time on the removal of COD from synthetic wastewater has been investigated to determine the most suitable process conditions for maximum removal of COD (lignin). A central composite design (CCD) has been used to design the experimental conditions for developing mathematical models to correlate the removal efficiency with the process variables. The most suitable conditions for the removal of lignin from synthetic solution were found to be as current density: 100A/m2, pH: 7.6, NaCl concentration: 0.75mg/l and treatment time: 75min. The proposed model gives prediction on COD (lignin) removal with the error limit of around + 9 to - 7%.

Keywords:
electro coagulation lignin wastewater COD paper and pulp industry

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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