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Catalysts 2017, 7(12), 362; doi:10.3390/catal7120362

Saturated Resin Ectopic Regeneration by Non-Thermal Dielectric Barrier Discharge Plasma

Department of Light Sources & Illuminating Engineering, Fudan University, Shanghai 200433, China
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Author to whom correspondence should be addressed.
Received: 26 October 2017 / Revised: 21 November 2017 / Accepted: 22 November 2017 / Published: 27 November 2017
(This article belongs to the Special Issue Photocatalysts for Organics Degradation)
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Abstract

Textile dyes are some of the most refractory organic compounds in the environment due to their complex and various structure. An integrated resin adsorption/Dielectric Barrier Discharge (DBD) plasma regeneration was proposed to treat the indigo carmine solution. It is the first time to report ectopic regeneration of the saturated resins by non-thermal Dielectric Barrier Discharge. The adsorption/desorption efficiency, surface functional groups, structural properties, regeneration efficiency, and the intermediate products between gas and liquid phase before and after treatment were investigated. The results showed that DBD plasma could maintain the efficient adsorption performance of resins while degrading the indigo carmine adsorbed by resins. The degradation rate of indigo carmine reached 88% and the regeneration efficiency (RE) can be maintained above 85% after multi-successive regeneration cycles. The indigo carmine contaminants were decomposed by a variety of reactive radicals leading to fracture of exocyclic C=C bond, which could cause decoloration of dye solution. Based on above results, a possible degradation pathway for the indigo carmine by resin adsorption/DBD plasma treatment was proposed. View Full-Text
Keywords: indigo carmine; resin; Dielectric Barrier Discharge; adsorption; regeneration indigo carmine; resin; Dielectric Barrier Discharge; adsorption; regeneration
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MDPI and ACS Style

Hao, C.; Xiao, Z.; Xu, D.; Zhang, C.; Qiu, J.; Liu, K. Saturated Resin Ectopic Regeneration by Non-Thermal Dielectric Barrier Discharge Plasma. Catalysts 2017, 7, 362.

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