巯基改性互花米草对阳离子染料的吸附性能

方彩霞; 李方方; 贾晶; 王斌

doi:10.3969/j.issn.1674-991X.2017.02.028

巯基改性互花米草对阳离子染料的吸附性能

doi: 10.3969/j.issn.1674-991X.2017.02.028

1.
安徽师范大学环境科学与工程学院,安徽芜湖 241000
2.
安徽师范大学化学与材料科学学院,安徽芜湖 241000

详细信息

作者简介:
方彩霞(1978—),女,副教授,博士,从事入侵物种资源化及废水处理研究, fangcaixia0606@126.com

中图分类号: X703.1
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- 被引次数: 0
出版历程
- 收稿日期: 2016-07-13
- 刊出日期: 2017-03-20

Adsorption of cationic dye from aqueous solution by thiol-modified Spartina alterniflora

1.
College of Environmental Science and Engineering, Anhui Normal University, Wuhu 241000, China
2.
College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China

摘要

摘要: 利用巯基乙酸与互花米草(Spartina alterniflora,SA)表面的羟基发生酯化反应制备了巯基改性互花米草(TMSA)生物吸附剂,傅里叶红外光谱结果证实巯基被接枝到互花米草表面。对模拟的阳离子染料(甲基紫和亚甲基蓝)废水进行吸附研究,结果表明:平衡吸附量随吸附剂投加量的增加而降低;溶液初始pH为8左右吸附效果较好;提高染料初始浓度和温度(10~30 ℃),吸附量都相应升高;吸附动力学符合准二级动力学方程,等温吸附模型符合Langmuir方程。
- 吸附 /
- 亚甲基蓝 /
- 甲基紫 /
- 互花米草 /
- 巯基改性
Abstract: Thiol-modified Spartina alterniflora (TMSA) was prepared via esterification with mercapto-acetic acid. Fourier transforms infrared (FTIR) was applied and confirmed that thiol groups were anchored onto the surface of Spartina alterniflora (SA). The TMSA was applied in the adsorption of cationic dye (methyl violet and methylene blue) in the synthetic wastewater. The results showed that the adsorption capacity decreased with the increase of the dosage of the adsorbent, and the proper pH value was around 8. Equilibrium sorption capacity increased with increasing the initial dye concentration or solution temperature (10-30 ℃). The adsorption kinetic data fit well with the pseudo-second-order model. The Langmuir isotherm model was found to fit well with the adsorption process.
- adsorption /
- methylene blue /
- methyl violet /
- Spartina alterniflora /
- thiol-modified

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参考文献(16)

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