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题名: N-Doped biochar derived from co-hydrothermal carbonization of rice husk and Chlorella pyrenoidosa for enhancing copper ion
作者: Gai, Chao; Guo, Yanchuan; Peng, Nana; Liu, Tingting; Liu, Zhengang
刊名: RSC ADVANCES
出版日期: 2016
卷号: 6, 期号:59, 页码:53713-53722
DOI: 10.1039/c6ra09270e
部门归属: 固体废弃物处理与资源化实验室
英文摘要: Biochar derived from rice husk was modified by microalgae Chlorella pyrenoidosa as a natural nitrogen-rich precursor in a hydrothermal environment for copper ion (Cu(II)) adsorption. Pristine biochar derived from hydrothermal carbonization of individual rice husks was included as a control. FTIR, SEM and BET analyses indicated that the modified biochar is more hydrophobic and basic than the pristine biochar due to the anchoring of surface nitrogenous functionalities. The adsorption of copper ions onto the pristine and modified biochar was investigated with respect to pH, adsorbent dosage, contact time, temperature, kinetics and isotherms. The results showed that modification of the biochar by nitrogen significantly increased the copper adsorption capacity from 13.12 mg g(-1) for the pristine biochar to 29.11 mg g (1) for the modified biochar. Adsorption of copper ions by the modified biochar was dominated by surface complexation rather than through the electrostatic attractions that dominated adsorption for the pristine biochar.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35787
Appears in Collections:固体废弃物处理与资源化实验室_期刊论文

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