Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution
To address organic dye pollution and agricultural waste comprehensive utilization, the biochar (ZB) was prepared using Rosa roxburghii residue as the material for preparation. Three modified biochars (ZBO, ZBS, and ZBH) were created using NaOH, Na2S, and H3PO4 as modifying agents. The morphology, st...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-12-01
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| Series: | Green Processing and Synthesis |
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| Online Access: | https://doi.org/10.1515/gps-2024-0154 |
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| author | Zhang Xiaojuan Cheng Wenwen Wang Jialu Lei Yanhui Yang Xueqin Duan Quan Duan Wenfeng Zhang Yutao |
| author_facet | Zhang Xiaojuan Cheng Wenwen Wang Jialu Lei Yanhui Yang Xueqin Duan Quan Duan Wenfeng Zhang Yutao |
| author_sort | Zhang Xiaojuan |
| collection | DOAJ |
| description | To address organic dye pollution and agricultural waste comprehensive utilization, the biochar (ZB) was prepared using Rosa roxburghii residue as the material for preparation. Three modified biochars (ZBO, ZBS, and ZBH) were created using NaOH, Na2S, and H3PO4 as modifying agents. The morphology, structure, pore size, and elemental composition of biochars were characterized and analyzed by a combination of FTIR, SEM-EDS, and N2 adsorption–desorption techniques. Furthermore, the adsorption performance of the as-prepared biochars was investigated in the adsorption of RhB and MB dye process. The experimental findings showed that adsorption equilibrium for these dyes was achieved in 180 min. Moreover, the dye adsorption on biochars followed a pseudo-second-order kinetic equation. For the biochar (ZB), the Langmuir equation proved to be more appropriate than the Freundlich equation. In contrast, the Freundlich equation was more apt for the modified biochars. More importantly, Pearson's correlation analysis revealed that the adsorption rate and capacity of RhB positively correlated with the specific pore volume, t-plot micropore area, and BET surface area, but a negative one with the pore size. The MB adsorption showed the opposite correlations. This study reveals a novel biochar for adsorbing organic dyes, which provides a strategy for the treatment of Rosa roxburghii residue. |
| format | Article |
| id | doaj-art-f06b6d96b3a24f41b770f3be61999c14 |
| institution | Kabale University |
| issn | 2191-9550 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Green Processing and Synthesis |
| spelling | doaj-art-f06b6d96b3a24f41b770f3be61999c142024-12-10T07:31:18ZengDe GruyterGreen Processing and Synthesis2191-95502024-12-0113126051310.1515/gps-2024-0154Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solutionZhang Xiaojuan0Cheng Wenwen1Wang Jialu2Lei Yanhui3Yang Xueqin4Duan Quan5Duan Wenfeng6Zhang Yutao7School of Chemistry and Chemical Engineering, Anshun University, Anshun, 561000, ChinaSchool of Chemistry and Chemical Engineering, Anshun University, Anshun, 561000, ChinaKey Laboratory of Agricultural Resources and Resouces and Environment in High Education Institute of Guizhou Province, Anshun, 561000, ChinaSchool of Chemistry and Chemical Engineering, Anshun University, Anshun, 561000, ChinaSchool of Chemistry and Chemical Engineering, Anshun University, Anshun, 561000, ChinaNonferrous Geological Center Laboratory of Guizhou Province, Anshun, 561000, ChinaNonferrous Geological Center Laboratory of Guizhou Province, Anshun, 561000, ChinaSchool of Chemistry and Chemical Engineering, Anshun University, Anshun, 561000, ChinaTo address organic dye pollution and agricultural waste comprehensive utilization, the biochar (ZB) was prepared using Rosa roxburghii residue as the material for preparation. Three modified biochars (ZBO, ZBS, and ZBH) were created using NaOH, Na2S, and H3PO4 as modifying agents. The morphology, structure, pore size, and elemental composition of biochars were characterized and analyzed by a combination of FTIR, SEM-EDS, and N2 adsorption–desorption techniques. Furthermore, the adsorption performance of the as-prepared biochars was investigated in the adsorption of RhB and MB dye process. The experimental findings showed that adsorption equilibrium for these dyes was achieved in 180 min. Moreover, the dye adsorption on biochars followed a pseudo-second-order kinetic equation. For the biochar (ZB), the Langmuir equation proved to be more appropriate than the Freundlich equation. In contrast, the Freundlich equation was more apt for the modified biochars. More importantly, Pearson's correlation analysis revealed that the adsorption rate and capacity of RhB positively correlated with the specific pore volume, t-plot micropore area, and BET surface area, but a negative one with the pore size. The MB adsorption showed the opposite correlations. This study reveals a novel biochar for adsorbing organic dyes, which provides a strategy for the treatment of Rosa roxburghii residue.https://doi.org/10.1515/gps-2024-0154rosa roxburghii residuebiocharmodified biocharsorganic dyesadsorption. |
| spellingShingle | Zhang Xiaojuan Cheng Wenwen Wang Jialu Lei Yanhui Yang Xueqin Duan Quan Duan Wenfeng Zhang Yutao Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution Green Processing and Synthesis rosa roxburghii residue biochar modified biochars organic dyes adsorption. |
| title | Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution |
| title_full | Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution |
| title_fullStr | Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution |
| title_full_unstemmed | Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution |
| title_short | Study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution |
| title_sort | study on adsorption characteristics of biochars and their modified biochars for removal of organic dyes from aqueous solution |
| topic | rosa roxburghii residue biochar modified biochars organic dyes adsorption. |
| url | https://doi.org/10.1515/gps-2024-0154 |
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