中国农业大学学报2018，Vol.23Issue(5)：15-21,7.DOI:10.11841/j.issn.1007-4333.2018.05.02
玉米秸秆生物炭对溶液体系中不同重金属离子的吸附特性
Adsorption of different heavy metal ions in solution system by corn stalk-based biochar
摘要
Abstract
The adsorption ability of different heavy metal ions by corn stalk-based biochars of 300 and 500 ℃, respectively was investigated in solution system with single and multiple ions. The experimental data were fitted by isothermal adsorption model. The results showed that 500 ℃ biochar has higher adsorption capacity than that of 300℃ biochar. For the same biochar,the order of the saturated adsorption capacity of biochar in single ion solution is Ni2+ ＜ Zn2+ ＜Cd2+ ＜Pb2+ ＜Cu2+. However,under the condition of high concentration of metal ions in heterogeneous solution system,the interaction between ions has a great influence on the adsorption capacity of biochar. Meanwhile, both biochars show higher adsorption capacity to Cu2+ and Pb2+. In conclusion,these results provide references for choosing suitable biochar remediation schemes for different heavy metal adsorption characteristics in practical applications such as wastewater treatment.关键词
玉米秸秆/生物炭/重金属/吸附Key words
corn stalks/biochar/heavy metals/adsorption分类
资源环境引用本文复制引用
张小玲,乔玉辉,李花粉..玉米秸秆生物炭对溶液体系中不同重金属离子的吸附特性[J].中国农业大学学报,2018,23(5):15-21,7.基金项目
国家自然科学基金项目(No.41471410) （No.41471410）
北京市生态重点学科资助项目(XK10019440) （XK10019440）
