可再生能源2024，Vol.42Issue(1)：1-8,8.
油页岩改性生物炭对磷酸盐的吸附特性
Phosphate adsorption characteristics of oil shale modified biochar
摘要
Abstract
This study aims to address the challenges of phosphorus recovery and solid waste treatment by preparing biochar composites(OS-CS)using a co-pyrolysis method with cotton straw stalk and oil shale as raw materials.The physicochemical properties of the biochar were analyzed using SEM-EDS,BET and FT-IR tests.The influence of pyrolysis temperature,adsorbent dosage,and solution pH on phosphate adsorption was investigated,and both the adsorption kinetics and isotherm models were studied.The results indicated that the structural properties and surface morphology of the biochar were significantly enhanced through oil shale modification,leading to a notable improvement in phosphate adsorption capacity.At an injection level of 4.0 g/L and pH5.0,the maximum adsorption capacity reached 7.01 mg/g,which was 2.47 times higher than that of cotton straw biochar and 3.52 times higher than that of oil shale char.The adsorption process followed the proposed secondary kinetics and Langmuir isothermal adsorption model,and the mechanisms involved surface precipitation,ligand exchange,and electrostatic attraction.This approach of oil shale modified biochar composites provides a novel strategy for both phosphorus removal and solid waste resource utilization.关键词
生物炭/改性/油页岩/磷酸盐/吸附Key words
biochar/modification/oil shale/phosphate/adsorption分类
能源科技引用本文复制引用
周术林,亚力昆江·吐尔逊,阿衣克力木·哈山,王洪生,阿依谢姆古丽·阿布都热依木,艾热提·阿不都艾尼,张宸..油页岩改性生物炭对磷酸盐的吸附特性[J].可再生能源,2024,42(1):1-8,8.基金项目
国家自然科学基金项目(22068036,21766037) （22068036,21766037）
大学生创新训练计划项目(202110755036). （202110755036）
