Journal of Liaoning Petrochemical University ›› 2025, Vol. 45 ›› Issue (4): 8-18.DOI: 10.12422/j.issn.1672-6952.2025.04.002

• Chemistry and Chemical Engineering • Previous Articles     Next Articles

Preparation and Adsorption Behaviors of a Biochar from Chinese Medicine Wastes with High Moisture

Yichang LIU1,2(), Tie MI1,2(), Fang HUANG1, Wei WAN2, Shanzhi XIN1   

  1. 1.School of Environment & Health,Jianghan University,Wuhan Hubei 430056,China
    2.Hubei Gas Purification Enterprise?School Joint Innovation Center,Wuhan Hubei 430056,China
  • Received:2024-07-13 Revised:2024-09-18 Published:2025-08-25 Online:2025-07-24
  • Contact: Tie MI

高湿中药废渣制备生物炭及其吸附性能

刘奕畅1,2(), 米铁1,2(), 黄芳1, 万伟2, 辛善志1   

  1. 1.江汉大学 环境与健康学院,湖北 武汉 430056
    2.湖北省气体净化企校联合创新中心,湖北 武汉 430056
  • 通讯作者: 米铁
  • 作者简介:刘奕畅(1999⁃),男,硕士研究生,从事固体有机废弃物资源化研究;E⁃mail:1172820899@qq.com
  • 基金资助:
    湖北省高等学校优秀中青年教师科技创新团队资助项目(T2014)

Abstract:

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.

Key words: Chinese herbal medicine wastes (CHMWs), Biochar, Adsorption

摘要:

以高湿中药废渣为原料,利用其自身水分在高温环境下受热生成的水蒸气进行物理活化,制备了孔隙结构发达的生物炭;考察了中药渣含水率、活化温度和活化时间对生物炭性能的影响,并利用物理吸附仪、傅里叶变换红外光谱、扫描电镜等对生物炭的性能进行了分析,获得了制备生物炭的最佳反应条件,同时对高湿中药废渣制备生物炭的活化机理进行了探讨;将制备的生物炭用于吸附Cu2+与Cd2+废水,探讨了其吸附动力学。结果表明,在活化温度为700 ℃、活化时间为60 min、中药废渣含水率为50%的条件下,制得的生物炭比表面积为309.29 m2/g,且以微孔为主,微孔孔容达0.116 8 cm3/g;生物炭对Cu2+与Cd2+的吸附动力学均符合准二级动力学方程,Cu2+与Cd2+的最佳吸附量分别为20.66、17.41 mg/g。

关键词: 中药废渣, 生物炭, 吸附

CLC Number: 

Cite this article

Yichang LIU, Tie MI, Fang HUANG, Wei WAN, Shanzhi XIN. Preparation and Adsorption Behaviors of a Biochar from Chinese Medicine Wastes with High Moisture[J]. Journal of Liaoning Petrochemical University, 2025, 45(4): 8-18.

刘奕畅, 米铁, 黄芳, 万伟, 辛善志. 高湿中药废渣制备生物炭及其吸附性能[J]. 辽宁石油化工大学学报, 2025, 45(4): 8-18.