Effect of biotite content of hydrogels on enhanced removal of cationic dye from aqueous solution

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	Effect of biotite content of hydrogels on enhanced removal of cationic dye from aqueous solution
	Zheng YA(郑易安); Wang AQ(王爱勤); Liu Y(刘毅)
刊名	Ionics
	2011
卷号	17 期号:6 页码:535-543
关键词	Hydrogel Biotite Methylene blue Adsorption equilibrium Kinetics
ISSN号	0947-7047
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	A series of chitosan-g-poly(acrylic acid)/biotite (CTS-g-PAA/BT) hydrogels with unique clay biotite (BT) were prepared and used to remove cationic dye methylene blue (MB) from aqueous solution by batch adsorption experiments. Variables of the system including BT content, initial pH, contact time, initial concentration, and temperature affecting the adsorption efficiency of MB by CTS-g-PAA/BT hydrogels were investigated. Kinetic studies indicated that the adsorption data well followed pseudo second-order kinetics. Langmuir and Freundlich isotherm models were applied to experimental equilibrium data of MB adsorption depending on temperature. The adsorption equilibrium data obeyed Langmuir isotherm, and the monolayer adsorption capacity calculated from the Langmuir isotherm was 2,125.70 mg/g for CTS-g-PAA/10% BT at 30 °C. The adsorption capacity was much higher compared with other hydrogels with the same content of other clays. The introduction of BT into the hydrogel could effectively improve its adsorption properties and reduce the cost. Thermodynamic parameters were evaluated for the dye-adsorbent systems and revealed that the adsorption process was spontaneous and exothermic in nature. All the information gave an indication that CTS-g-PAA/10% BT could potentially be applied as an efficient adsorbent for cationic dye removal from aqueous solution.
学科主题	功能高分子
收录类别	SCI
资助信息	国家自然科学基金项目(20877077)
语种	英语
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/79]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
推荐引用方式 GB/T 7714	Zheng YA,Wang AQ,Liu Y. Effect of biotite content of hydrogels on enhanced removal of cationic dye from aqueous solution[J]. Ionics,2011,17(6):535-543.
APA	郑易安,王爱勤,&刘毅.(2011).Effect of biotite content of hydrogels on enhanced removal of cationic dye from aqueous solution.Ionics,17(6),535-543.
MLA	郑易安,et al."Effect of biotite content of hydrogels on enhanced removal of cationic dye from aqueous solution".Ionics 17.6(2011):535-543.