Removal of congo red from aqueous solution by adsorption on organified rectorite

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

	Removal of congo red from aqueous solution by adsorption on organified rectorite
	Liu Y(刘毅); Wang WB(王文波); Wang AQ(王爱勤)
刊名	CLEAN - Soil, Air, Water
	2010
卷号	38 期号:7 页码:670-677
关键词	Congo red Dyes Kinetics Rectorite Sorption isotherm
ISSN号	1863-0650
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	Batch sorption technique was carried out for the removal of anionic dye Congo red (CR) from aqueous solution using raw rectorite (R-REC) and organified rectorite (CTAþ-REC) modified by cetyltrimethylammonium bromide (CTAB) as adsorbents. The effects of organification degree of CTAþ-REC as well as the process parameters including the pH of dye solution, sorption time, and initial dye concentration on adsorption capacity for CR were investigated and the sorption kinetics was also evaluated. The results showed that the sorption behaviors of R-REC and CTAþ-REC for CR followed pseudo-second-order kinetic model and the sorption equilibrium data perfectly obeyed the Langmuir isotherm. The thermodynamic parameters including entropy of sorption (DS0), enthalpy of sorption (DH0), and Gibbs free energy of sorption (DG0) were obtained and analyzed. Fourier transform infrared study revealed that a chemisorption process occurred between CR and CTAþ-REC. REC modified by cationic surfactants showed the higher adsorption capacities for CR compared to R-REC and in theory would be used as an efficient and promising adsorbent for the removal of anionic dyes in wastewater treatment.
学科主题	功能高分子
收录类别	SCI
资助信息	江苏省科技厅项目(BE2008087)
语种	英语
公开日期	2012-09-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/135]
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	Liu Y,Wang WB,Wang AQ. Removal of congo red from aqueous solution by adsorption on organified rectorite[J]. CLEAN - Soil, Air, Water,2010,38(7):670-677.
APA	刘毅,王文波,&王爱勤.(2010).Removal of congo red from aqueous solution by adsorption on organified rectorite.CLEAN - Soil, Air, Water,38(7),670-677.
MLA	刘毅,et al."Removal of congo red from aqueous solution by adsorption on organified rectorite".CLEAN - Soil, Air, Water 38.7(2010):670-677.