Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst
Abstract The degradation efficiency of fulvic acid (FA) was investigated in the catalytic wet oxidation process (CWPO) by zero-valent copper chitosan activated carbon ball (ZVC/CTS-ACB). Characterization of ZVC/CTS-ACB shows that zero-valent copper was loaded successfully on the chitosan activated c...
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| Format: | Article |
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Nature Portfolio
2021-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-92789-6 |
| _version_ | 1818347178212458496 |
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| author | Chaofei Song Yue Lv Xia Qin Chengrui Guo Jiaxin Cui Wendkuuni Steve-Harold Kaghembega |
| author_facet | Chaofei Song Yue Lv Xia Qin Chengrui Guo Jiaxin Cui Wendkuuni Steve-Harold Kaghembega |
| author_sort | Chaofei Song |
| collection | DOAJ |
| description | Abstract The degradation efficiency of fulvic acid (FA) was investigated in the catalytic wet oxidation process (CWPO) by zero-valent copper chitosan activated carbon ball (ZVC/CTS-ACB). Characterization of ZVC/CTS-ACB shows that zero-valent copper was loaded successfully on the chitosan activated carbon. Plackett–Buiman (PB) design and response surface methodology (RSM) were employed to determine the influence factors and the optimum processing parameters. The model was well fitted to the actual data and the correlation coefficients of R2 and R2-adj were 0.9359 and 0.9039, respectively. Under the obtained optimum conditions for FA degradation: temperature = 94 °C and pH 3.8, the average FA removal by three replicate experiments was 93.02%, which has a high consistency to the RSM optimal target response of 93.86%. The comparison of catalytic performance showed that the addition of catalyst ZVC/CTS-ACS could increase the removal rate of FA, color number (CN) and TOC by 93.6%, 83.5% and 81.9% respectively. The high TOC removal rate indicated the good performance of the catalyst to FA mineralization. Additionally, the ICP analysis of copper ion leaching was only 0.08 mg/l after 5 repeated recycles of the catalyst, demonstrating the high stability of ZVC/CTS-ACB that is beneficial for the actual application. |
| first_indexed | 2024-12-13T17:30:02Z |
| format | Article |
| id | doaj.art-cd1a073db8e04b6f86333aceb835367e |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-13T17:30:02Z |
| publishDate | 2021-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-cd1a073db8e04b6f86333aceb835367e2022-12-21T23:37:04ZengNature PortfolioScientific Reports2045-23222021-07-0111111210.1038/s41598-021-92789-6Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalystChaofei Song0Yue Lv1Xia Qin2Chengrui Guo3Jiaxin Cui4Wendkuuni Steve-Harold Kaghembega5Faculty of Environment and Life, Beijing University of TechnologyFaculty of Environment and Life, Beijing University of TechnologyFaculty of Environment and Life, Beijing University of TechnologyFaculty of Environment and Life, Beijing University of TechnologyFaculty of Environment and Life, Beijing University of TechnologyFaculty of Environment and Life, Beijing University of TechnologyAbstract The degradation efficiency of fulvic acid (FA) was investigated in the catalytic wet oxidation process (CWPO) by zero-valent copper chitosan activated carbon ball (ZVC/CTS-ACB). Characterization of ZVC/CTS-ACB shows that zero-valent copper was loaded successfully on the chitosan activated carbon. Plackett–Buiman (PB) design and response surface methodology (RSM) were employed to determine the influence factors and the optimum processing parameters. The model was well fitted to the actual data and the correlation coefficients of R2 and R2-adj were 0.9359 and 0.9039, respectively. Under the obtained optimum conditions for FA degradation: temperature = 94 °C and pH 3.8, the average FA removal by three replicate experiments was 93.02%, which has a high consistency to the RSM optimal target response of 93.86%. The comparison of catalytic performance showed that the addition of catalyst ZVC/CTS-ACS could increase the removal rate of FA, color number (CN) and TOC by 93.6%, 83.5% and 81.9% respectively. The high TOC removal rate indicated the good performance of the catalyst to FA mineralization. Additionally, the ICP analysis of copper ion leaching was only 0.08 mg/l after 5 repeated recycles of the catalyst, demonstrating the high stability of ZVC/CTS-ACB that is beneficial for the actual application.https://doi.org/10.1038/s41598-021-92789-6 |
| spellingShingle | Chaofei Song Yue Lv Xia Qin Chengrui Guo Jiaxin Cui Wendkuuni Steve-Harold Kaghembega Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst Scientific Reports |
| title | Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst |
| title_full | Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst |
| title_fullStr | Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst |
| title_full_unstemmed | Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst |
| title_short | Optimization of catalytic wet oxidating fulvic acid with zero-valent copper chitosan activated carbon ball as the catalyst |
| title_sort | optimization of catalytic wet oxidating fulvic acid with zero valent copper chitosan activated carbon ball as the catalyst |
| url | https://doi.org/10.1038/s41598-021-92789-6 |
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