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化工新型材料  2018, Vol. 46 Issue (12): 209-213    
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
锰铁氧体/生物炭的制备及其对Pb2+吸附性能的研究
王耀1,2, 段正洋1, 石康伟2, 刘树丽1, 徐龙乾1, 何昌华1, 黄启华1, 徐晓军1*
1.昆明理工大学环境科学与工程学院,昆明650500;
2.中陕核工业集团二二四大队有限公司,西安710024
Synthesis of biochar loaded with manganese ferrite and their performance for Pb2+ removal
Wang Yao1,2, Duan Zhengyang1, Shi Kangwei2, Liu Shuli1, Xu Longqian1, He Changhua1, Huang Qihua1, Xu Xiaojun1
1.Faculty of Environmental Science and Technology,Kunming University of Science and Technology,Kunming 650500;
2.Geological Party No.224,Sino Shaanxi Nuclear Industry Group,Xi'an 710024;
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摘要 利用水热法合成了锰铁氧体/生物炭吸附材料(FBC),用于去除溶液中Pb2+离子。通过傅里叶变换红外光谱仪对吸附前后FBC进行表征分析,研究了溶液初始pH、溶液初始质量浓度、吸附时间等对Pb2+离子吸附的影响,探讨了吸附动力学特性和吸附等温线特性。结果表明:温度为25℃,FBC吸附Pb2+离子在120min内即可达到吸附平衡,最大吸附量为126.1mg/g;吸附过程符合准二级动力学方程和Langmuir等温吸附方程,说明FBC对Pb2+离子的吸附过程主要是单分子层化学吸附。再生吸附实验结果显示,重复利用5次后,FBC对Pb2+离子的吸附量超过70mg/g,表现出良好的再生性能。
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王耀
段正洋
石康伟
刘树丽
徐龙乾
何昌华
黄启华
徐晓军
关键词:  锰铁氧体  生物炭  吸附动力学  吸附等温线  含铅废水    
Abstract: Biochar loaded with manganese ferrite (FBC) was prepared by hydrothermal synthesis,and applied in Pb2+ removal from synthetic wastewater.The product was characterized by fourier tansform infrared (FT-IR).Effect factors,such as pH,initial concentration of Pb2+,contact time and adsorption kinetics,adsorption isotherms on FBC adsorption for Pb2+ were investigated.The adsorption equilibrium of Pb2+ was achieved after 120min at 25℃,and the maximum adsorption capacity was 126.1mg/g.The adsorption process which followed the pseudo-second-order kinetics and Langmuir isotherm equation showed that monomolecular chemisorption played dominant role in Pb2+ adsorption.The desorption result indicated that the adsorption capacities of FBC could still reach up to 70mg/g by five repetition tests.
Key words:  manganese ferrite    biochar    adsorption kinetics    adsorption isotherm    wastewater leaded Pb2+
收稿日期:  2017-07-25                     发布日期:  2019-01-07      期的出版日期:  2018-12-20
通讯作者:  徐晓军(1960-),男,博士,教授,主要研究方向为废弃物资源化利用及水污染控制。   
作者简介:  王耀(1990-),男,硕士研究生,主要研究方向为水污染控制工程。
引用本文:    
王耀, 段正洋, 石康伟, 刘树丽, 徐龙乾, 何昌华, 黄启华, 徐晓军. 锰铁氧体/生物炭的制备及其对Pb2+吸附性能的研究[J]. 化工新型材料, 2018, 46(12): 209-213.
Wang Yao, Duan Zhengyang, Shi Kangwei, Liu Shuli, Xu Longqian, He Changhua, Huang Qihua, Xu Xiaojun. Synthesis of biochar loaded with manganese ferrite and their performance for Pb2+ removal. New Chemical Materials, 2018, 46(12): 209-213.
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http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I12/209
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