Decolorization of Azo Dyes C.I.Acid Yellow 17 and C.I.Direct Red 31 by Dielectric-Barrier Discharge Air Plasma

Zhao, Jun; Chen, Jierong; Gao, Juan

doi:10.1109/tps.2009.2039232

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…A peak at 1660.71 cm -1 representing the symmetric stretch of azo bond has completely disappeared in all the treated samples supporting Decolorization and degradation of azo dyes Chapter 4 76 that azo bond was reduced and cleaved into aromatic amines completely [131], [205]. Appearance of a new peak at 1641.42 cm -1 in the 48 h sample represents the carboxylic group [202].…”

Section: Degradation Pathway Of Ab113mentioning

confidence: 77%

“…Besides this, the latter has a straight-chain structure in contrast to the branched-chain structure of the former. [202]. Therefore, decolorization profiles cannot be explained solely based on the count of azo bonds and sulfonated groups present in the dye [182], [200].…”

Section: Degradation Pathway Of Ab113mentioning

confidence: 99%

“…The degradation of azo dyes require more time than that is required for decolorization [202]. Hence, TOC/TN of the samples were monitored to find the degree of mineralization [202].…”

Section: Degradation Pathway Of Ab113mentioning

confidence: 99%

“…The degradation of azo dyes require more time than that is required for decolorization [202]. Hence, TOC/TN of the samples were monitored to find the degree of mineralization [202]. Though dye degradation occurred faster than TOC/TN removal [186], the mineralization was observed to be only ~ 50 % for both DR81 and RO16 [197].…”

Section: Degradation Pathway Of Ab113mentioning

confidence: 99%

“…Upon the symmetric cleavage of -N=N-bond the direct dye (m/z 632.0908) was broken down into two fragments to generate SAAs and AAs containing mono and di-substituted benzene and naphthalene rings[202]. The fragments were identified as: A) 4-((4-aminophenyl) diazenyl) benzene sulfonic acid (m/z 278.0596), B) 7-[(2-amino-4-methyl benzoyl) amino]-4-hydroxynaphthalene-2-sulfonic acid (m/z 373.0503).…”

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confidence: 99%

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Decolorization of azo dyes with Klebsiella Pneumoniae under high saline conditions

Gopi¹

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I would like to express my heartfelt gratitude to my supervisor, Prof Ng Wun Jern, for the invaluable encouragement, careful technical guidance, and extraordinary patience throughout my candidature period. Without his support and supervision, this work would not have been possible. I am indebted forever for the kindness and care he had for me when I was going through my hardships.I would like to thank my co-supervisor, Prof William Chen, and my mentor, Prof Liu Yu, for their valuable suggestions and continuously improving my thesis. I would like to thank Dr. Babu Narayanaswamy for being more than a mentor, especially during the final year of my candidature. I would also extend my thanks for trusting my abilities and allowing me to finish my Graduate Assistantship Program duty under his supervision. I would like to thank Prof Lisak Grzegorz for allowing me to work on his project to clock my Research assistantship duty. I learned a lot during my time as an RA. Special thanks to Dr. Harish Venkata Krishnan, who taught me microbiological techniques during my first year. Special thanks to Dr. Dave Poh and Dr. Pan Chaozhi for helping me clarify my technical doubts in my research work and providing invaluable feedback on my data and manuscripts. I would like to express my thanks to all the lab technicians, staff, colleagues, and friends at AEBC, NEWRI. I would like to acknowledge Interdisciplinary Graduate School, Nanyang Technological University (NTU) and NEWRI Singapore, for the financial support throughout this project and the opportunity to conduct this research. I would like to especially thank Ms. Elvy Riani Wanjaya, Dr. Lv Yunbo, Dr. Han Yuan for training me on various high-end analytical instruments that are key for this study. Thanks to Ms. Hera for always being kind and helpful from day one and making my life as easy and smooth as possible at AEBC, NEWRI, SG.

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Section: Degradation Pathway Of Ab113mentioning

confidence: 77%

Section: Degradation Pathway Of Ab113mentioning

confidence: 99%

“…The degradation of azo dyes require more time than that is required for decolorization [202]. Hence, TOC/TN of the samples were monitored to find the degree of mineralization [202].…”

Section: Degradation Pathway Of Ab113mentioning

confidence: 99%

Section: Degradation Pathway Of Ab113mentioning

confidence: 99%

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confidence: 99%

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Decolorization of azo dyes with Klebsiella Pneumoniae under high saline conditions

Gopi¹

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Degradation of Selected Organophosphate Pesticides in Wastewater by Dielectric Barrier Discharge Plasma

Bai

et al. 2013

Bull Environ Contam Toxicol

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In this paper, degradation of selected organophosphate pesticides (dichlorvos and dimethoate) in wastewater by dielectric barrier discharge plasma (DBD) was studied. DBD parameters, i.e. discharge powers and air-gap distances, differently affect their degradation efficiency. The results show that better degradation efficiency is obtained with a higher discharge power and a shorter air-gap distance. The effect of radical intervention degradation was also investigated by adding radical scavenger (tert-butyl alcohol) to the pesticide solution during the experiments. The result shows that the degradation efficiency is restrained in the presence of radical scavenger. It clearly demonstrates that hydroxyl radicals are most likely the main driver for degradation process. Moreover, the kinetics indicate that the disappearance rate of pesticides follows the first-order rate law when the initial concentration of the solution is low, but shifts to zero-order at a higher initial concentration.

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Controllable hydrothermal synthesis, optical and photocatalytic properties of TiO2 nanostructures

Zhang

et al. 2014

Applied Surface Science

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Decolorization of Azo Dyes C.I.Acid Yellow 17 and C.I.Direct Red 31 by Dielectric-Barrier Discharge Air Plasma

Cited by 8 publications

References 30 publications

Decolorization of azo dyes with Klebsiella Pneumoniae under high saline conditions

Decolorization of azo dyes with Klebsiella Pneumoniae under high saline conditions

Degradation of Selected Organophosphate Pesticides in Wastewater by Dielectric Barrier Discharge Plasma

Controllable hydrothermal synthesis, optical and photocatalytic properties of TiO2 nanostructures

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