Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2678
Title: Mineralization of pyrrole, a recalcitrant heterocyclic compound, by electrochemical method: Multi-response optimization and degradation mechanism
Authors: Hiwarkar A.D.
Singh S.
Srivastava, Vimal Chandra
Mall I.D.
Published in: Journal of Environmental Management
Abstract: In this study, the electrochemical (EC) oxidation of a recalcitrant heterocyclic compound namely pyrrole has been reported using platinum coated titanium (Pt/Ti) electrodes. Response surface methodology (RSM) comprising of full factorial central composite design (CCD) with four factors and five levels has been used to examine the effects of different operating parameters such as current density (j), aqueous solution pH, conductivity (k) and treatment time (t) in an EC batch reactor. Pyrrole mineralization in aqueous solution was examined with multiple responses such as chemical oxygen demand (COD) (response, Y1) and specific energy consumption (SEC) in kWh/kg of COD removed (response, Y2). During multiple response optimization, the desirability function approach was employed to concurrently maximize Y1 and minimize Y2. At the optimum condition, 82.9% COD removal and 7.7 kWh/kg of COD removed were observed. Degradation mechanism of pyrrole in wastewater was elucidated at the optimum condition of treatment by using UV-visible spectroscopy, Fourier transformed infra-red spectroscopy (FTIR), cyclic voltammetry (CV), ion chromatography (IC), higher performance liquid chromatography (HPLC) and gas chromatography-mass spectroscopy (GC-MS). The degradation pathway of pyrrole was proposed on the basis of the various analysis. © 2017 Elsevier Ltd
Citation: Journal of Environmental Management (2017), 198(): 144-152
URI: https://doi.org/10.1016/j.jenvman.2017.04.051
http://repository.iitr.ac.in/handle/123456789/2678
Issue Date: 2017
Publisher: Academic Press
Keywords: COD removal
Degradation mechanism
Electrochemical oxidation
Multiple-response optimization
Specific energy consumption (SEC)
ISSN: 3014797
Author Scopus IDs: 56362746800
57192784617
35565811700
55664368900
Author Affiliations: Hiwarkar, A.D., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India, Department of Chemical Engineering, Bundelkhand Institute of Engineering and Technology, Jhansi, Uttar Pradesh 284128, India
Singh, S., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Srivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Mall, I.D., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Corresponding Author: Srivastava, V.C.; Department of Chemical Engineering, Indian Institute of Technology, RoorkeeIndia; email: vimalfch@iitr.ac.in
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.