磁性生物炭的制备及其吸附性能的研究

doi:10.11894/1005-829x.2016.36(3).054

摘要/Abstract

摘要：

利用微波辐照技术,以稻草秸秆为碳源,FeCl₃为赋磁剂,在无需还原剂的条件下制备了磁性生物炭(MBC)吸附剂。对吸附剂进行了表征,并且分析了初始pH、温度、吸附时间等条件对MBC吸附孔雀石绿特性的影响。结果表明,MBC对孔雀石绿的吸附符合Langmuir等温模型和准二级动力学吸附方程;用微波再生法对MBC再生,重复5次后,MBC对孔雀石绿的吸附量为原始吸附量的70%,表现了良好的再生能力。

关键词: 磁性生物炭, 孔雀石绿, 吸附, 微波辐照

Abstract:

A kind of magnetic biochar(MBC) adsorbent has been synthesized by means of using microwave radiation technology, and straw as carbon source, FeCl₃ as magnetic materials, under a condition without using any reducing agent. The adsorbent is characterized. The influences of initial pH, temperature, adsorption time, etc. on MBC adsorbing capacity for malachite green are analyzed. The results indicate that the adsorption of malachite green by MBC follows the Langmuir isotherm model and the pseudo-second order kinetics adsorption equation. The microwave regeneration method is used for the regeneration of MBC. After 5 times of repetition, the adsorbing capacity for malachite green by MBC is 70% of the original adsorbing capacity, showing pretty regeneration capacity.

Key words: magnetic biochar, malachite green, adsorption, microwave irradiation

中图分类号:

X703.5

孙运飞, 李文文, 汪燕南, 赵广超. 磁性生物炭的制备及其吸附性能的研究[J]. 工业水处理, 2016, 36(3): 54-58.

Sun Yunfei, Li Wenwen, Wang Yannan, Zhao Guangchao. Study on the preparation of magnetic biochar and its adsorbing capacity[J]. INDUSTRIAL WATER TREATMENT, 2016, 36(3): 54-58.

https://www.iwt.cn/CN/Y2016/V36/I3/54

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