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dc.contributor.authorHiwarkar A.D.-
dc.contributor.authorSingh S.-
dc.contributor.authorSrivastava, Vimal Chandra-
dc.contributor.authorThakur C.-
dc.contributor.authorMall I.D.-
dc.contributor.authorLo S.-L.-
dc.date.accessioned2020-10-06T14:11:01Z-
dc.date.available2020-10-06T14:11:01Z-
dc.date.issued2018-
dc.identifier.citationInternational Journal of Environmental Science and Technology (2018), 15(2): 349-360-
dc.identifier.issn17351472-
dc.identifier.urihttps://doi.org/10.1007/s13762-017-1391-2-
dc.identifier.urihttp://repository.iitr.ac.in/handle/123456789/2670-
dc.description.abstractIndole is a highly recalcitrant aromatic heterocyclic organic compound consisting of a five-membered nitrogen-containing pyrrole ring fused to a six-membered benzene ring. This study presents the results of the electro-chemical mineralization of indole in an aqueous solution using platinum-coated titanium (Pt/Ti) electrode. A central composite design was used to investigate the effect of four parameters namely initial pH (pHo), current density (j), conductivity (k) and treatment time (t) at 5 levels. Multiple responses namely chemical oxygen demand (COD) removal (Y1) and specific energy consumption (Y2) were simultaneously maximized and minimized, respectively, by optimizing the parameters affecting the mineralization of indole by using the desirability function approach. At the operating conditions of pH 8.6, j = 161 A/m2, k = 6.7 mS/cm and t = 150 min, 83.8% COD removal with specific energy consumption of 36.3 kWh/kg of COD removed was observed. Ultra performance liquid chromatography, UV–visible spectroscopy, Fourier transform infrared spectroscopy and cyclic voltammetry of the indole solution were performed at the optimum condition of the treatment so as to report a plausible mechanism of indole degradation. Field emission scanning electron microscopy analysis of electrodes before and after treatment was performed for determining the changes on anode surface during the treatment. Thermal analysis of the solid residue (scum) obtained was also performed for exploring its disposal prospects. Present study shows that electro-chemical oxidation can be used for mineralization of nitrogenous heterocyclic compounds such as indole. © 2017, Islamic Azad University (IAU).-
dc.language.isoen_US-
dc.publisherCenter for Environmental and Energy Research and Studies-
dc.relation.ispartofInternational Journal of Environmental Science and Technology-
dc.subjectCOD removal-
dc.subjectElectro-chemical treatment-
dc.subjectMultiple-response optimization-
dc.subjectSpecific energy consumption-
dc.titleElectro-chemical mineralization of recalcitrant indole by platinum-coated titanium electrode: multi-response optimization, mechanistic and sludge disposal study-
dc.typeArticle-
dc.scopusid56362746800-
dc.scopusid57192784617-
dc.scopusid35565811700-
dc.scopusid25648521900-
dc.scopusid55664368900-
dc.scopusid7401542147-
dc.affiliationHiwarkar, 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-
dc.affiliationSingh, S., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India, Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd, Taipei, 106, Taiwan-
dc.affiliationSrivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationThakur, C., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India, Department of Chemical Engineering, National Institute of Technology, Raipur, Chhattisgarh 492010, India-
dc.affiliationMall, I.D., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India, Department of Chemical Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India-
dc.affiliationLo, S.-L., Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd, Taipei, 106, Taiwan-
dc.description.correspondingauthorSrivastava, V.C.; Department of Chemical Engineering, Indian Institute of Technology, RoorkeeIndia; email: vimalcsr@yahoo.co.in-
Appears in Collections:Journal Publications [CH]

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