Preparation and Adsorption Behaviors of a Biochar from Chinese Medicine Wastes with High Moisture
Biochar with developed pore structure was prepared by using high⁃humidity Chinese herbal medicine wastes (CHMWs) as raw material, using the water vapor generated by its own water under a high temperature environment for physical activation，and the effects of moisture content, activation temperature...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal of Liaoning Petrochemical University
2025-08-01
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| Series: | Liaoning Shiyou Huagong Daxue xuebao |
| Subjects: | |
| Online Access: | https://journal.lnpu.edu.cn/CN/10.12422/j.issn.1672-6952.2025.04.002 |
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| Summary: | Biochar with developed pore structure was prepared by using high⁃humidity Chinese herbal medicine wastes (CHMWs) as raw material, using the water vapor generated by its own water under a high temperature environment for physical activation，and the effects of moisture content, activation temperature and activation time on the performance of biochar were investigated. The performance of biochar was analyzed by physical adsorption instrument, Fourier transform infrared spectroscopy, scanning electron microscopy and other instruments, and the optimal reaction conditions for biochar preparation were obtained, and the activation mechanism of biochar prepared from CHMWs was discussed. The prepared biochar was used to adsorb wastewater containing Cd2+ and Cu2+, and the adsorption kinetics were discussed. The experimental results showed that under the conditions of 700 ℃ heating temperature, 60 min heating time and 50% moisture content of the CHMWs, the biochar with a specific surface area of 309.29 m2/g and a pore volume of 0.116 8 cm3/g and was obtained. The experimental results of adsorption showed that the adsorption kinetics on Cu2+and Cd2+ conformed to the quasi second order kinetic equation, and the optimal adsorption capacities of Cu2+ and Cd2+ were 20.66 mg/g and 17.41 mg/g respectively. |
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| ISSN: | 1672-6952 |