蛋白质与木质纤维素共水热合成水热炭对Cr(Ⅵ)吸附性能的评价
Evaluation of Cr(Ⅵ)Adsorption Properties of Hydrothermal Carbon Synthesis from Protein and Lignocellulose
梁康怡 1朱万鑫 1马大朝1
作者信息
- 1. 广西大学资源环境与材料学院,南宁 530004
- 折叠
摘要
以纤维素、半纤维素和木质素作为木质纤维素模型化合物,加入蛋白质共水热制备水热炭,通过一系列吸附实验,研究温度、pH值、阴离子等对吸附Cr(Ⅵ)的影响.结果表明,在相同条件下,木质纤维素与蛋白质共水热制备的水热炭吸附性能优于其单独水热处理的产物,对于50 mL的100 mg/L的含Cr(Ⅵ)废水,pH=2,室温下1g/L的水热炭在8 h内对Cr(Ⅵ)的吸附,半纤维素与蛋白质共水热后吸附能力从20.21 mg/g显著提升至91.02 mg/g,木质素试验组由初始的69.58 mg/g提升至108.09 mg/g.
Abstract
As lignocellulosic model compounds,cellulose,hemicellulose and lignin are used to prepare hydrothermal carbon by adding protein co-hydrothermal.Through a series of adsorption experiments,the study analyzes the effects of temperature,pH value and anion on the adsorption of Cr(Ⅵ).The results show that under the same conditions,the adsorption performance of hydrothermal carbon prepared by co-hydrothermal preparation of lignocellulose and protein is better than that of the product of hydrothermal treatment alone.For 50 mL of 100 mg/L wastewater containing Cr(Ⅵ),pH=2,and the adsorption of Cr(Ⅵ)by 1 g/L hydrothermal carbon at room temperature within 8 h,the adsorption capacity of hemicellulose and protein increases from 20.21 mg/g to 91.02 mg/g,and that of lignin group increases from 69.58 mg/g to 108.09 mg/g after co-hydrothermal treatment.
关键词
木质纤维素/蛋白质/共水热/水热炭/六价铬/吸附性能Key words
Lignocellulose/Protein/Common water heat/Hydrothermal carbon/Hexavalent chromium/Adsorption property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据