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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/20451
Title: Binary electrochemical mineralization of heterocyclic nitrogenous compounds: parametric optimization using Taguchi method and mineralization mechanism
Authors: Hiwarkar A.D.
Chauhan R.
Patidar R.
Srivastava, Vimal Chandra
Singh S.
Mall I.D.
Published in: Environmental Science and Pollution Research
Abstract: The main objective of the present work was to understand the interactive behaviour of various operating parameters including concentration of pollutants during binary electrochemical mineralization of the two nitrogenous heterocyclic pollutants in the aqueous solution. Indole and pyrrole were selected as pollutants, whereas Pt/Ti was selected as anode and cathode. The effects of different operating parameters like current density, solution conductivity, initial concentration of the pollutants and time were studied. Taguchi method was used to optimize these operating parameters for obtaining the ultimate rate of degradation for the nitrogenous compounds. There were basically two responses, i.e. chemical oxygen demand (COD) degradation and specific energy consumption. These responses were maximized and minimized, respectively. At the optimum condition, removal efficiencies of pyrrole, indole and COD were found to be 46.1%, 62.4% and 61.4%, respectively. The optimum value of specific energy consumption was found to be 159.5 kWh per kg COD removed. Possible mineralization pathways are also proposed on the basis of the identified intermediates by gas chromatography coupled with mass spectroscopy. The operating cost was also calculated for the binary lab-scale treatment of the indole and pyrrole and compared with reported cost analysis for the electrochemical treatment. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
Citation: Environmental Science and Pollution Research, 28(6): 7332-7346
URI: https://doi.org/10.1007/s11356-020-11057-8
http://repository.iitr.ac.in/handle/123456789/20451
Issue Date: 2021
Publisher: Springer Science and Business Media Deutschland GmbH
Keywords: Binary mineralization
Cost analysis
Indole
Mechanism
Pyrrole
ISSN: 9441344
Author Scopus IDs: 56362746800
57197047692
42262496600
35565811700
57192784617
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
Chauhan, R., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Patidar, R., 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
Singh, S., 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
Funding Details: All India Council for Technical Education, अभातशिप; Ministry of Human Resource Development, MHRD; Ministry of Education and Human Resources Development, MOEHRD
Corresponding Author: Srivastava, V.C.; Department of Chemical Engineering, India; email: vimalcsr@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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