|本期目录/Table of Contents|

[1]祝亚平,周 旋*,朱 密,等.三种淡水藻对Pb2+的吸附研究[J].武汉工程大学学报,2018,40(06):614-618.[doi:10. 3969/j. issn. 16742869. 2018. 06. 006]
 ZHU Yaping,ZHOU Xuan*,ZHU Mi,et al.Adsorption of Pb2+ by Three Kinds of Freshwater Algae[J].Journal of Wuhan Institute of Technology,2018,40(06):614-618.[doi:10. 3969/j. issn. 16742869. 2018. 06. 006]
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三种淡水藻对Pb2+的吸附研究(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
40
期数:
2018年06期
页码:
614-618
栏目:
化学与化学工程
出版日期:
2018-12-28

文章信息/Info

Title:
Adsorption of Pb2+ by Three Kinds of Freshwater Algae
文章编号:
20180606
作者:
祝亚平周 旋*朱 密何军良宋翰林
武汉工程大学化学与环境工程学院,湖北 武汉 430205
Author(s):
ZHU Yaping ZHOU Xuan* ZHU Mi HE Junliang SONG Hanlin
School of Chemical & Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
关键词:
淡水藻吸附铅离子
Keywords:
fresh algae adsorption lead ion
分类号:
TQ914.3
DOI:
10. 3969/j. issn. 16742869. 2018. 06. 006
文献标志码:
A
摘要:
以绿毛藻、螺旋藻、小球藻等三种淡水藻为吸附剂,通过改变吸附时间(0.5 h~6.0h)、初始pH(3.0~11.0)、吸附剂用量(0.05 g~0.30g)以及Na+质量浓度(0 mg/L~120?mg/L),考察其对溶液中Pb2+(50mg/L)的吸附效果,并利用吸附等温线拟合对其吸附动力学模型进行了初步探究。结果表明,随着吸附时间的增加,吸附会达到平衡,而后出现解吸的现象;在偏酸性的条件下这三种藻类对Pb2+的吸附效果较好;当吸附达到平衡后再增加吸附剂的用量会降低单位质量吸附剂的吸附能力;Na+浓度对吸附效果也有极大的影响。吸附等温线表明这三种藻类吸附剂的吸附均符合Langmuir模型,依据该模型得到其对Pb2+的饱和吸附量分别为27.50 mg/g、21.00 mg/g和25.85 mg/g。这三种藻类对Pb2+均有较好的吸附效果,且廉价易得,在处理重金属污染上将有一定的应用前景。
Abstract:
The adsorption behaviors of three kinds of freshwater algae such as green algae, spirulina and chlorella for Pb2+(50 mg/L) in solution were investigated by changing the adsorption time (0.5 h-6.0h), initial pH(3.0-11.0), adsorbent dosage (0.05 g-0.3g) and ionic strength (0 mg/L-120mg/L). And the adsorption kinetics model was preliminary investigated by fitting the adsorption isotherm. The results show that the adsorption reaches the equilibrium with the increase of adsorption time, and then desorption occurres. The adsorption effect of these three species of algae on Pb2+ is better under slightly acidic conditions. The increase of adsorbent amount reduces the adsorption capacity of the unit mass adsorbent when the adsorption reaches the equilibrium. It is also found that the concentration of Na+ greatly influences the adsorption of Pb2+. And the adsorption isotherms indicate that adsorption behaviors of these three algae are consistent with the Langmuir model, where the maximum adsorption capacity of three kinds of algae for Pb2+ is 27.50 mg/g, 21.00 mg/g and 25.85 mg/g respectively. These algae have high adsorption capacity for Pb2+, and are cheap and available, so they are expected to be applied in treating heavy metal pollution.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-01-18基金项目:武汉工程大学第九届研究生创新基金(CX2017107);武汉工程大学第十期大学生校长基金(2015061)作者简介:祝亚平,硕士研究生。E-mail:[email protected]*通讯作者:周 旋,博士,副教授,硕士研究生导师。E-mail:[email protected]引文格式:祝亚平,周旋,朱密,等. 三种淡水藻对Pb2+的吸附研究[J]. 武汉工程大学学报,2018,40(6):614-618.
更新日期/Last Update: 2018-12-22