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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2137
Title: Removal of COD, TOC, and color from pulp and paper industry wastewater through electrocoagulation
Authors: Shankar R.
Singh L.
Mondal, Prasenjit
Chand S.
Published in: Desalination and Water Treatment
Abstract: Abstract: The present paper deals with the treatment of paper and pulp industry wastewater through electrocoagulation in a batch reactor using aluminum as a sacrificial electrode. The effect of various parameters such as pH, treatment time, current density, and inter-electrode distance on the removal of chemical oxygen demand (COD), total organic carbon (TOC), and color from pulp and paper industry wastewater has been investigated to determine the optimum process conditions. A central composite design has been used to design the experimental conditions for developing mathematical models to correlate the removal efficiency with the process variables. The optimum process condition for the maximum removal of COD, TOC, and color from pulp and paper industry wastewater have been found to be as pH: 7, treatment time: 75 min, current density: 115 A/m2, and inter-electrode distance: 1.5 cm with a combined desirability index value of 0.816. Under optimum operating conditions, the percent removals of COD, TOC, and color are ?77, 78.8, and 99.6%, respectively. The proposed models are found suitable to predict the percent removals of COD, TOC, and color with the error limits of ± 7, ± 9, and + 2 to ?6%, respectively. The sludge and scum produced during the process have been characterized to assess their potential as a source of energy and aluminum recovery. © 2013 Balaban Desalination Publications. All rights reserved.
Citation: Desalination and Water Treatment (2014), 52(40-42): 7711-7722
URI: https://doi.org/10.1080/19443994.2013.831782
http://repository.iitr.ac.in/handle/123456789/2137
Issue Date: 2014
Publisher: Taylor and Francis Inc.
Keywords: COD
Colour
Electro-coagulation
Electrode
Pulp and paper industry
TOC
Wastewater
ISSN: 19443994
Author Scopus IDs: 56645875100
55844740300
57200197409
7102245914
Author Affiliations: Shankar, R., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Singh, L., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Mondal, P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Chand, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Corresponding Author: Mondal, P.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia
Appears in Collections:Journal Publications [CH]

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