[1]翁晴.笋壳基活性炭对铜离子和亚甲基蓝的共吸附性能研究[J].福建工程学院学报,2018,16(01):22-27.[doi:10.3969/j.issn.1672-4348.2018.01.005]
　WENG Qing.Research on bamboo-shoot-shell-based activated carbon’s absorption of copper ions and methylene blue[J].Journal of FuJian University of Technology,2018,16(01):22-27.[doi:10.3969/j.issn.1672-4348.2018.01.005]
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笋壳基活性炭对铜离子和亚甲基蓝的共吸附性能研究()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第16卷
期数:
2018年01期
页码:
22-27
栏目:
出版日期:
2018-02-25

文章信息/Info

Title:
Research on bamboo-shoot-shell-based activated carbon’s absorption of copper ions and methylene blue
作者:
翁晴
福建工程学院生态环境与城市建设学院
Author(s):
WENG Qing
School of Ecological Environment and Urban Construction, Fujian University of Technology
关键词:
笋壳;  活性炭;  铜离子;  亚甲基蓝;  共吸附
Keywords:
bamboo shoot shells;  activated carbon;  copper ions;  methylene blue;  coabsorption
分类号:
X703
DOI:
10.3969/j.issn.1672-4348.2018.01.005
文献标志码:
A
摘要:
以笋壳为原材料，经过NaOH活化、碳化后制得笋壳基活性炭，研究了其对重金属及有机污染物的单独和共吸附性能。选取Cu(Ⅱ)和亚甲基蓝（MB）作为复合污染水体的特征污染物，探讨活性炭对两者的单独和共吸附性能，并从动力学角度探讨了吸附机理。结果表明，不同类型的污染物单独存在时，笋壳基活性炭对Cu(Ⅱ)和MB的吸附量分别是6.55 mg/g和 18.26 mg/g；而当上述两种污染物共存时，吸附量均明显下降，这说明Cu(Ⅱ)和MB存在竞争吸附。准二级动力学方程很好地描述了笋壳基活性炭对Cu(Ⅱ)和MB的吸附行为。吸附速率的控制步骤是内扩散，吸附速率还受膜扩散的控制。
Abstract:
Activated carbon based on bamboo shoot shells was prepared through a two-step NaOH activation and carbonization process with bamboo shoot shells as the raw material. It was studied for its absorption of individual heavy metals and organic pollutants as well as its co-absorption of them. Cu (II)and methylene blue (MB) were selected as the characteristic pollutants of the compound polluted water bodies. Activated carbon’s absorption of the two were investigated and the adsorption mechanism was discussed from the kinetic point of view. Results show that, in mono-pollutant systems, the maximum capacity for absorbing Cu (II) and MB were 6.55 mg/g and 18.26 mg/g respectively. However, the adsorption capacity for Cu (II) and MB decreased in the Cu (II) –MB binary system, which indicates that there is competitive adsorption between Cu (II) and MB. The quasi-second order kinetic equation was found to explain the adsorption kinetics most effectively. The adsorption rate was not only controlled by intra-particle diffusion but also controlled by membrane diffusion.

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更新日期/Last Update: 2018-02-25