Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution
Cadmium (Cd) contamination in aquatic ecosystems is a serious global environmental issue. Biochar derived from agricultural wastes has recently attracted remarkable attention as it is used as an absorbent in combating heavy metal contamination of water bodies. In the present study, the absorption ef...
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2024-11-01
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| author | Nan Pei Wenwen Luo Qingqing Huang Yuebing Sun |
| author_facet | Nan Pei Wenwen Luo Qingqing Huang Yuebing Sun |
| author_sort | Nan Pei |
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| description | Cadmium (Cd) contamination in aquatic ecosystems is a serious global environmental issue. Biochar derived from agricultural wastes has recently attracted remarkable attention as it is used as an absorbent in combating heavy metal contamination of water bodies. In the present study, the absorption efficacy of fish bone (FBM) and fishbone-derived biochar prepared at 200 °C, 400 °C, 600 °C, and 800 °C (referred to as B<sub>200</sub>, B<sub>400</sub>, B<sub>600</sub>, and B<sub>800</sub>, respectively) for the Cd ion (Cd<sup>2+</sup>) in aqueous solution was investigated. The results showed that high-temperature pyrolysis could optimize the pore structure and specific surface area of FBM, and Cd<sup>2+</sup> successfully adsorbed onto FBM and fishbone-derived biochar. High-temperature pyrolysis significantly increased the FBM adsorption capacity for Cd<sup>2+</sup> by 49.5–135.1%, with the optimal pyrolysis temperature being 600 °C. Furthermore, the kinetic data of FBM and fishbone-derived biochar for Cd<sup>2+</sup> were in better alignment with the pseudo-second-order model, their adsorption isotherms were better in accordance with the Langmuir models, and the thermodynamic analysis showed that the adsorption process was monolayer and favorable adsorption. Moreover, the potential adsorption mechanisms of Cd<sup>2+</sup> on FBM and fishbone-derived biochar might be related to pore filling, ion exchange, complexation with oxygen functional groups, and precipitation with the minerals on the biochar surface. Fishbone-derived biochar has significant potential for wastewater treatment and agricultural waste applications. |
| format | Article |
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| institution | Kabale University |
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| spelling | doaj-art-fd1289b63f9544d2b74c904c3b8fb0132024-11-26T17:45:09ZengMDPI AGAgronomy2073-43952024-11-011411271710.3390/agronomy14112717Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous SolutionNan Pei0Wenwen Luo1Qingqing Huang2Yuebing Sun3Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin 300191, ChinaKey Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin 300191, ChinaKey Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin 300191, ChinaKey Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin 300191, ChinaCadmium (Cd) contamination in aquatic ecosystems is a serious global environmental issue. Biochar derived from agricultural wastes has recently attracted remarkable attention as it is used as an absorbent in combating heavy metal contamination of water bodies. In the present study, the absorption efficacy of fish bone (FBM) and fishbone-derived biochar prepared at 200 °C, 400 °C, 600 °C, and 800 °C (referred to as B<sub>200</sub>, B<sub>400</sub>, B<sub>600</sub>, and B<sub>800</sub>, respectively) for the Cd ion (Cd<sup>2+</sup>) in aqueous solution was investigated. The results showed that high-temperature pyrolysis could optimize the pore structure and specific surface area of FBM, and Cd<sup>2+</sup> successfully adsorbed onto FBM and fishbone-derived biochar. High-temperature pyrolysis significantly increased the FBM adsorption capacity for Cd<sup>2+</sup> by 49.5–135.1%, with the optimal pyrolysis temperature being 600 °C. Furthermore, the kinetic data of FBM and fishbone-derived biochar for Cd<sup>2+</sup> were in better alignment with the pseudo-second-order model, their adsorption isotherms were better in accordance with the Langmuir models, and the thermodynamic analysis showed that the adsorption process was monolayer and favorable adsorption. Moreover, the potential adsorption mechanisms of Cd<sup>2+</sup> on FBM and fishbone-derived biochar might be related to pore filling, ion exchange, complexation with oxygen functional groups, and precipitation with the minerals on the biochar surface. Fishbone-derived biochar has significant potential for wastewater treatment and agricultural waste applications.https://www.mdpi.com/2073-4395/14/11/2717adsorption propertiesbiocharcadmiumfishbone |
| spellingShingle | Nan Pei Wenwen Luo Qingqing Huang Yuebing Sun Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution Agronomy adsorption properties biochar cadmium fishbone |
| title | Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution |
| title_full | Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution |
| title_fullStr | Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution |
| title_full_unstemmed | Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution |
| title_short | Adsorption Properties of Fishbone and Fishbone-Derived Biochar for Cadmium in Aqueous Solution |
| title_sort | adsorption properties of fishbone and fishbone derived biochar for cadmium in aqueous solution |
| topic | adsorption properties biochar cadmium fishbone |
| url | https://www.mdpi.com/2073-4395/14/11/2717 |
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