Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite
In this research, dielectric barrier discharge plasma was developed to cooperate with goethite for removing caffeine in aqueous solution. Goethite was characterized by X-ray diffraction and scanning electron microscopy. The effects of input power, initial concentration and catalysts concentration on...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-07-01
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| Series: | Journal of Saudi Chemical Society |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1319610316300710 |
| _version_ | 1819054950415597568 |
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| author | Jian Wang Yabing Sun Hao Jiang Jingwei Feng |
| author_facet | Jian Wang Yabing Sun Hao Jiang Jingwei Feng |
| author_sort | Jian Wang |
| collection | DOAJ |
| description | In this research, dielectric barrier discharge plasma was developed to cooperate with goethite for removing caffeine in aqueous solution. Goethite was characterized by X-ray diffraction and scanning electron microscopy. The effects of input power, initial concentration and catalysts concentration on the removal efficiency of caffeine were evaluated. Furthermore, the degradation pathways of caffeine were also discussed preliminarily. In the case of caffeine concentration at 50 mg L−1, the degradation efficiency of caffeine was improved from 41% to 94% after 24 min on the conditions of input power of 75 W by combining goethite catalysts (2.5 g L−1), while the energy efficiency could be enhanced 1.6–2.3 times compared to the single DBD reactor. The reaction mechanism experiments demonstrated that attack by hydroxyl radical and ozone was the main degradation process of caffeine in aqueous solution. These studies also provided a theoretical and practical basis for the application of DBD-goethite in treatment of caffeine from water. |
| first_indexed | 2024-12-21T12:59:46Z |
| format | Article |
| id | doaj.art-256edddce96b4c67a5dbc97b02f1a635 |
| institution | Directory Open Access Journal |
| issn | 1319-6103 |
| language | English |
| last_indexed | 2024-12-21T12:59:46Z |
| publishDate | 2017-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Saudi Chemical Society |
| spelling | doaj.art-256edddce96b4c67a5dbc97b02f1a6352022-12-21T19:03:13ZengElsevierJournal of Saudi Chemical Society1319-61032017-07-0121554555710.1016/j.jscs.2016.08.002Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethiteJian Wang0Yabing Sun1Hao Jiang2Jingwei Feng3State Key laboratory of Pollution Control & Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR ChinaState Key laboratory of Pollution Control & Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR ChinaState Key laboratory of Pollution Control & Resources Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR ChinaSchool of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, PR ChinaIn this research, dielectric barrier discharge plasma was developed to cooperate with goethite for removing caffeine in aqueous solution. Goethite was characterized by X-ray diffraction and scanning electron microscopy. The effects of input power, initial concentration and catalysts concentration on the removal efficiency of caffeine were evaluated. Furthermore, the degradation pathways of caffeine were also discussed preliminarily. In the case of caffeine concentration at 50 mg L−1, the degradation efficiency of caffeine was improved from 41% to 94% after 24 min on the conditions of input power of 75 W by combining goethite catalysts (2.5 g L−1), while the energy efficiency could be enhanced 1.6–2.3 times compared to the single DBD reactor. The reaction mechanism experiments demonstrated that attack by hydroxyl radical and ozone was the main degradation process of caffeine in aqueous solution. These studies also provided a theoretical and practical basis for the application of DBD-goethite in treatment of caffeine from water.http://www.sciencedirect.com/science/article/pii/S1319610316300710Dielectric barrier dischargePlasmaCaffeineGoethite |
| spellingShingle | Jian Wang Yabing Sun Hao Jiang Jingwei Feng Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite Journal of Saudi Chemical Society Dielectric barrier discharge Plasma Caffeine Goethite |
| title | Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite |
| title_full | Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite |
| title_fullStr | Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite |
| title_full_unstemmed | Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite |
| title_short | Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite |
| title_sort | removal of caffeine from water by combining dielectric barrier discharge dbd plasma with goethite |
| topic | Dielectric barrier discharge Plasma Caffeine Goethite |
| url | http://www.sciencedirect.com/science/article/pii/S1319610316300710 |
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