Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite
Heterogeneous Fe-Mn/sepiolite catalysts were prepared by the co-precipitation method, followed by heat treatment. The catalysts were characterized by several techniques; analysis by X-ray fluorescence (XRF) and scanning electron microscopy (SEM) confirmed the existence of fine Fe and Mn particles in...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2015-07-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_3_5503_Cheng_Chlorophenol_Degradation_Papermaking_Wastewater |
| _version_ | 1819054695978631168 |
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| author | Zheng Cheng Rendang Yang Bin Wang Fei Yang |
| author_facet | Zheng Cheng Rendang Yang Bin Wang Fei Yang |
| author_sort | Zheng Cheng |
| collection | DOAJ |
| description | Heterogeneous Fe-Mn/sepiolite catalysts were prepared by the co-precipitation method, followed by heat treatment. The catalysts were characterized by several techniques; analysis by X-ray fluorescence (XRF) and scanning electron microscopy (SEM) confirmed the existence of fine Fe and Mn particles in the catalysts. Compared to natural sepiolite, the specific surface area of the Fe-Mn/sepiolite catalyst was increased from 125.2 to 412.7 m2/g, as measured by Brunauer-Emmett-Teller (BET) analysis. The activity of the catalysts was evaluated by the ozonation degradation of p-chlorophenol solution, and the results showed that the catalysts were highly effective, as the removal rate of p-chlorophenol was more than 98.5%, achieved in 25 min at a 20% (w/w) Mn content. The catalysts were then used for chlorophenol degradation in papermaking wastewater through a heterogeneous ozonation process. At optimal conditions, a 98% chlorophenol removal rate and a 58% COD removal efficiency were achieved in 30 min, and pollutants in the treated wastewater were more biodegradable and less toxic than in raw water. Moreover, the prepared catalysts remained stable during successive catalytic ozonation runs. The possible reaction pathway was also proposed. |
| first_indexed | 2024-12-21T12:55:43Z |
| format | Article |
| id | doaj.art-790c2b71ebca49c09d57efe71c5c06e5 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-12-21T12:55:43Z |
| publishDate | 2015-07-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-790c2b71ebca49c09d57efe71c5c06e52022-12-21T19:03:21ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-07-011035503551410.15376/biores.10.3.5503-5514Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/SepioliteZheng Cheng0Rendang Yang1Bin Wang2Fei Yang3South China University of Technology; ChinaSouth China University of Technology; ChinaSouth China University of Technology; ChinaSouth China University of Technology; ChinaHeterogeneous Fe-Mn/sepiolite catalysts were prepared by the co-precipitation method, followed by heat treatment. The catalysts were characterized by several techniques; analysis by X-ray fluorescence (XRF) and scanning electron microscopy (SEM) confirmed the existence of fine Fe and Mn particles in the catalysts. Compared to natural sepiolite, the specific surface area of the Fe-Mn/sepiolite catalyst was increased from 125.2 to 412.7 m2/g, as measured by Brunauer-Emmett-Teller (BET) analysis. The activity of the catalysts was evaluated by the ozonation degradation of p-chlorophenol solution, and the results showed that the catalysts were highly effective, as the removal rate of p-chlorophenol was more than 98.5%, achieved in 25 min at a 20% (w/w) Mn content. The catalysts were then used for chlorophenol degradation in papermaking wastewater through a heterogeneous ozonation process. At optimal conditions, a 98% chlorophenol removal rate and a 58% COD removal efficiency were achieved in 30 min, and pollutants in the treated wastewater were more biodegradable and less toxic than in raw water. Moreover, the prepared catalysts remained stable during successive catalytic ozonation runs. The possible reaction pathway was also proposed.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_3_5503_Cheng_Chlorophenol_Degradation_Papermaking_WastewaterChlorophenolPapermaking wastewaterSepioliteHeterogeneous ozonation |
| spellingShingle | Zheng Cheng Rendang Yang Bin Wang Fei Yang Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite BioResources Chlorophenol Papermaking wastewater Sepiolite Heterogeneous ozonation |
| title | Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite |
| title_full | Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite |
| title_fullStr | Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite |
| title_full_unstemmed | Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite |
| title_short | Chlorophenol Degradation in Papermaking Wastewater through a Heterogeneous Ozonation Process Catalyzed by Fe-Mn/Sepiolite |
| title_sort | chlorophenol degradation in papermaking wastewater through a heterogeneous ozonation process catalyzed by fe mn sepiolite |
| topic | Chlorophenol Papermaking wastewater Sepiolite Heterogeneous ozonation |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_3_5503_Cheng_Chlorophenol_Degradation_Papermaking_Wastewater |
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