摘要
以蒙脱石、磷酸二氢钙、水钠锰矿与玉米秸秆、氯化铁为原料,采用浸渍热解法制得矿物生物炭,通过FTIR,SEM和BET对矿物生物炭进行表征,并对不同矿物生物炭对菲的吸附性能及吸附机理进行研究。结果表明:3种矿物生物炭材料均可有效去除水溶液中的菲,与蒙脱石和磷酸二氢钙生物炭相比,水钠锰矿生物炭对水中菲的去除效果最好;溶液的p H值对矿物生物炭吸附菲的影响不大,在碱性条件下的吸附效果较好;矿物生物炭对菲的吸附符合准二级动力学方程,表明其对菲的吸附为物理化学吸附。
Mineral biochar was prepared by impregnation pyrolysis method using montmorillonite, calcium dihydrogen phosphate, birnessite, and corn straw, ferric chloride as raw materials. The mineral biochar was characterized by FTIR, SEM and BET. The adsorption properties and adsorption mechanism of different mineral biochar on phenanthrene were studied.The results showed that three mineral biochar could effectively remove phenanthrene from aqueous solution. Compared with montmorillonite and calcium dihydrogen phosphate biochar,birnessite biochar has better effect in the removal of phenanthrene from water.The p H of the solution has little influence on the adsorption of phenanthrene on mineral biochar,and the adsorption effect under alkaline conditions is better. The adsorption of phenanthrene by mineral biochar conformed to the quasi-second-order kinetic equation. This result indicated that the adsorption of phenanthrene by mineral biochar was physical-chemical adsorption.
作者
高乔
刘怡暄
汪杰
侯彬
卢静
GAO Qiao;LIU Yi-xuan;WANG Jie;HOU Bin;LU Jing(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China)
出处
《环境科技》
2022年第1期18-22,共5页
Environmental Science and Technology
基金
国家自然科学基金面上项目(41977141)
国家自然科学基金青年项目(21806147)
国家重点研发计划(2018YFC-1801100).
关键词
矿物生物炭
菲
吸附
Mineral biochar
Phenanthrene
Adsorption
