Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation

Dimethyl phthalate (DMP) was treated via wet oxygen oxidation process (WOP). The decomposition efficiency ηDMP of DMP and mineralization efficiency ηTOC of total organic carbons were measured to evaluate the effects of operation parameters on the performance of WOP. The results revealed that reactio...

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Main Authors:	Dar-Ren Ji, Chia-Chi Chang, Shih-Yun Chen, Chun-Yu Chiu, Jyi-Yeong Tseng, Ching-Yuan Chang, Chiung-Fen Chang, Sheng-Wei Chiang, Zang-Sie Hung, Je-Lueng Shie, Yi-Hung Chen, Min-Hao Yuan
Format:	Article
Language:	English
Published:	Hindawi Limited 2015-01-01
Series:	The Scientific World Journal
Online Access:	http://dx.doi.org/10.1155/2015/164594

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spelling	doaj-75f0084daf11468e8416ecc94b041b5a2020-11-25T02:00:21ZengHindawi LimitedThe Scientific World Journal2356-61401537-744X2015-01-01201510.1155/2015/164594164594Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet OxidationDar-Ren Ji0Chia-Chi Chang1Shih-Yun Chen2Chun-Yu Chiu3Jyi-Yeong Tseng4Ching-Yuan Chang5Chiung-Fen Chang6Sheng-Wei Chiang7Zang-Sie Hung8Je-Lueng Shie9Yi-Hung Chen10Min-Hao Yuan11Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Cosmetic Science and Application, Lan Yang Institute of Technology, Yilan 261, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Environmental Science and Engineering, Tunghai University, Taichung 407, TaiwanChemical Engineering Division, Institute of Nuclear Energy Research, Atomic Energy Council, Lungtan, Taoyuan 325, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Environmental Engineering, National Ilan University, Yilan 260, TaiwanDepartment of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, TaiwanGraduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, TaiwanDimethyl phthalate (DMP) was treated via wet oxygen oxidation process (WOP). The decomposition efficiency ηDMP of DMP and mineralization efficiency ηTOC of total organic carbons were measured to evaluate the effects of operation parameters on the performance of WOP. The results revealed that reaction temperature T is the most affecting factor, with a higher T offering higher ηDMP and ηTOC as expected. The ηDMP increases as rotating speed increases from 300 to 500 rpm with stirring enhancement of gas liquid mass transfer. However, it exhibits reduction effect at 700 rpm due to purging of dissolved oxygen by overstirring. Regarding the effects of pressure PT, a higher PT provides more oxygen for the forward reaction with DMP, while overhigh PT increases the absorption of gaseous products such as CO2 and decomposes short-chain hydrocarbon fragments back into the solution thus hindering the forward reaction. For the tested PT of 2.41 to 3.45 MPa, the results indicated that 2.41 MPa is appropriate. A longer reaction time of course gives better performance. At 500 rpm, 483 K, 2.41 MPa, and 180 min, the ηDMP and ηTOC are 93 and 36%, respectively.http://dx.doi.org/10.1155/2015/164594
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Dar-Ren Ji Chia-Chi Chang Shih-Yun Chen Chun-Yu Chiu Jyi-Yeong Tseng Ching-Yuan Chang Chiung-Fen Chang Sheng-Wei Chiang Zang-Sie Hung Je-Lueng Shie Yi-Hung Chen Min-Hao Yuan
spellingShingle	Dar-Ren Ji Chia-Chi Chang Shih-Yun Chen Chun-Yu Chiu Jyi-Yeong Tseng Ching-Yuan Chang Chiung-Fen Chang Sheng-Wei Chiang Zang-Sie Hung Je-Lueng Shie Yi-Hung Chen Min-Hao Yuan Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation The Scientific World Journal
author_facet	Dar-Ren Ji Chia-Chi Chang Shih-Yun Chen Chun-Yu Chiu Jyi-Yeong Tseng Ching-Yuan Chang Chiung-Fen Chang Sheng-Wei Chiang Zang-Sie Hung Je-Lueng Shie Yi-Hung Chen Min-Hao Yuan
author_sort	Dar-Ren Ji
title	Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation
title_short	Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation
title_full	Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation
title_fullStr	Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation
title_full_unstemmed	Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation
title_sort	decomposition and mineralization of dimethyl phthalate in an aqueous solution by wet oxidation
publisher	Hindawi Limited
series	The Scientific World Journal
issn	2356-6140 1537-744X
publishDate	2015-01-01
description	Dimethyl phthalate (DMP) was treated via wet oxygen oxidation process (WOP). The decomposition efficiency ηDMP of DMP and mineralization efficiency ηTOC of total organic carbons were measured to evaluate the effects of operation parameters on the performance of WOP. The results revealed that reaction temperature T is the most affecting factor, with a higher T offering higher ηDMP and ηTOC as expected. The ηDMP increases as rotating speed increases from 300 to 500 rpm with stirring enhancement of gas liquid mass transfer. However, it exhibits reduction effect at 700 rpm due to purging of dissolved oxygen by overstirring. Regarding the effects of pressure PT, a higher PT provides more oxygen for the forward reaction with DMP, while overhigh PT increases the absorption of gaseous products such as CO2 and decomposes short-chain hydrocarbon fragments back into the solution thus hindering the forward reaction. For the tested PT of 2.41 to 3.45 MPa, the results indicated that 2.41 MPa is appropriate. A longer reaction time of course gives better performance. At 500 rpm, 483 K, 2.41 MPa, and 180 min, the ηDMP and ηTOC are 93 and 36%, respectively.
url	http://dx.doi.org/10.1155/2015/164594
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Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation

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