Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide
This study was originally performed to compare the MnO2-based degradation of aqueous methylene blue (MB) under microwave irradiation- (MW-) enhanced and conventional heating- (CH-) enhanced conditions. The degradation process and kinetics were investigated to elucidate the microwave effect on the re...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/916849 |
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| author | Wen-Hui Kuan Chun-Yuan Chen Ching-Yao Hu Yu-Min Tzou |
| author_facet | Wen-Hui Kuan Chun-Yuan Chen Ching-Yao Hu Yu-Min Tzou |
| author_sort | Wen-Hui Kuan |
| collection | DOAJ |
| description | This study was originally performed to compare the MnO2-based degradation of aqueous methylene blue (MB) under microwave irradiation- (MW-) enhanced and conventional heating- (CH-) enhanced conditions. The degradation process and kinetics were investigated to elucidate the microwave effect on the reaction. The results showed that all three tested conditions, sole MnO2, MnO2/CH, and MnO2/MW, followed the third-order (second upon MB and first upon MnO2) kinetic model. However, a higher degradation rate of MB was available under the MW-enhanced process, which implies that the “athermal effect” of MW might be of more benefit for the generation of electrophilic oxygen ions (, , and ) to degrade MB. The results showed that the degradation percentage of MB could reach 100%, corresponding to 92% total organic carbon (TOC) removal under microwave irradiation at pH 7.20 for 10 min. |
| format | Article |
| id | doaj-art-8742fdccfe824a8483c118b726706f88 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-8742fdccfe824a8483c118b726706f882025-02-03T01:11:12ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/916849916849Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese OxideWen-Hui Kuan0Chun-Yuan Chen1Ching-Yao Hu2Yu-Min Tzou3Department of Safety, Health, and Environmental Engineering, Ming Chi University of Technology, 84 Gung-Juan Road, Taishan, New Taipei 24301, TaiwanDepartment of Safety, Health, and Environmental Engineering, Ming Chi University of Technology, 84 Gung-Juan Road, Taishan, New Taipei 24301, TaiwanSchool of Public Health, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, TaiwanDepartment of Soil and Environmental Science, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung 40227, TaiwanThis study was originally performed to compare the MnO2-based degradation of aqueous methylene blue (MB) under microwave irradiation- (MW-) enhanced and conventional heating- (CH-) enhanced conditions. The degradation process and kinetics were investigated to elucidate the microwave effect on the reaction. The results showed that all three tested conditions, sole MnO2, MnO2/CH, and MnO2/MW, followed the third-order (second upon MB and first upon MnO2) kinetic model. However, a higher degradation rate of MB was available under the MW-enhanced process, which implies that the “athermal effect” of MW might be of more benefit for the generation of electrophilic oxygen ions (, , and ) to degrade MB. The results showed that the degradation percentage of MB could reach 100%, corresponding to 92% total organic carbon (TOC) removal under microwave irradiation at pH 7.20 for 10 min.http://dx.doi.org/10.1155/2013/916849 |
| spellingShingle | Wen-Hui Kuan Chun-Yuan Chen Ching-Yao Hu Yu-Min Tzou Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide International Journal of Photoenergy |
| title | Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide |
| title_full | Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide |
| title_fullStr | Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide |
| title_full_unstemmed | Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide |
| title_short | Kinetic Modeling for Microwave-Enhanced Degradation of Methylene Blue Using Manganese Oxide |
| title_sort | kinetic modeling for microwave enhanced degradation of methylene blue using manganese oxide |
| url | http://dx.doi.org/10.1155/2013/916849 |
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