玉米芯基活性炭吸附去除水中重金属的实验及机理研究

doi:10.12068/j.issn.1005-3026.2018.03.027

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (3): 441-445.DOI: 10.12068/j.issn.1005-3026.2018.03.027

玉米芯基活性炭吸附去除水中重金属的实验及机理研究

赵研，郎朗，姜彬慧，邓烁

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2016-10-14 修回日期:2016-10-14 出版日期:2018-03-15 发布日期:2018-03-09
通讯作者: 赵研
作者简介:冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.赵研(1983-)，男，辽宁沈阳人，东北大学讲师，博士；姜彬慧(1962-)，女，辽宁沈阳人，东北大学教授.
基金资助:
国家自然科学基金资助项目(51171041).中央高校基本科研业务费青年教师科研启动资金资助项目(N150103002).

Experiment and Mechanistic Study on Adsorption and Removal of Heavy Metals in Water by Corncob-Based Activated Carbon

ZHAO Yan， LANG Lang， JIANG Bin-hui， DENG Shuo

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2016-10-14 Revised:2016-10-14 Online:2018-03-15 Published:2018-03-09
Contact: JIANG Bin-hui
About author:-
Supported by:
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摘要/Abstract

摘要： 运用农作物废弃物玉米芯为原料，通过马弗炉在不同工艺条件下碳化制备玉米芯基活性炭，考察了其对锌、锰和铅三种重金属的吸附性能，并利用傅里叶红外光谱、扫描电镜(SEM及EDS)等手段研究了其吸附重金属锌的机理，并对吸附后的吸附剂进行解吸实验.实验结果表明，合适工艺下生产的玉米芯基活性炭对水中锌离子有极高的吸附率，吸附动力学行为符合准二级动力学方程;对玉米芯基活性炭的解吸，酸解吸法比电场干预解吸法能取得更好的效果.初步判断玉米芯基活性炭可用于吸附重金属，是一种低成本吸附剂.

关键词: 玉米芯, 锌离子, 吸附, 吸附机理, 解吸

Abstract: The corncob-based activated carbon was prepared by the carbonization with muffle furnace under different process conditions， and the corncob of wasted crops was used as raw material. The adsorption performance for heavy metals， such as Zn， Mn and Pb， were investigated， and the adsorption mechanism of the corn cob-based activated carbon for heavy metal zinc was studied by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM and EDS). Then the desorption experiment was carried out on the adsorbent after adsorption. The results showed that the corncob-based activated carbon prepared by appropriate technology has a very high adsorption rate for zinc ions in water， the adsorption kinetic behavior accords with the quasi-second order kinetics equation. For the desorption of corncob-based activated carbon， the effect of acid desorption is better than electric field intervention desorption. The preliminary conclusion is that the corncob-based activated carbon can be used for absorbing heavy metals and is a kind of low-cost adsorbent.

Key words: corncob, zinc ion, adsorption, adsorption mechanism, desorption

中图分类号:

X522

赵研，郎朗，姜彬慧，邓烁. 玉米芯基活性炭吸附去除水中重金属的实验及机理研究[J]. 东北大学学报:自然科学版, 2018, 39(3): 441-445.

ZHAO Yan， LANG Lang， JIANG Bin-hui， DENG Shuo. Experiment and Mechanistic Study on Adsorption and Removal of Heavy Metals in Water by Corncob-Based Activated Carbon[J]. Journal of Northeastern University Natural Science, 2018, 39(3): 441-445.

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玉米芯基活性炭吸附去除水中重金属的实验及机理研究

Experiment and Mechanistic Study on Adsorption and Removal of Heavy Metals in Water by Corncob-Based Activated Carbon

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