Adsorption of methylene blue from aqueous solution onto multiporous palygorskite modified by ion beam bombardment: Effect of contact time, temperature, pH and ionic strength

doi:10.1016/j.clay.2013.08.033

	Adsorption of methylene blue from aqueous solution onto multiporous palygorskite modified by ion beam bombardment: Effect of contact time, temperature, pH and ionic strength
	Zhang, Jing 1; Cai, Dongqing 1; Zhang, Guilong 1; Cai, Chuanjie 1; Zhang, Caili 1; Qiu, Guannan1 ; Zheng, Kang2 ; Wu, Zhengyan1
	2013-10-01
发表期刊	APPLIED CLAY SCIENCE
摘要	Our previous work has reported that an inorganic nano-network of palygorskite with multiporous structure can be fabricated from rigid nano-rods by ion beam bombardment and has better adsorption capability than nanorods. Here, this dispersed modified nano adsorbent was characterized by Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscope (SEM). The adsorption property of methylene blue (MB) onto this adsorbent was investigated. It was found that the adsorption capacity increased with contact time, pH, MB initial concentration, respectively, and then reached an equilibrium. Moreover, the effect of pH on the adsorption was strongly determined by zeta potential. The adsorption kinetics of MB was dominated by the pseudo-secondorder reaction model, and the adsorption isotherms fit the Freundlich isotherms better than the Langmuir isotherms. Three temperatures (293 K, 303 K, 313 K) were set for describing the thermodynamic parameters (Delta H-theta, Delta S-theta, Delta G(theta)), which indicated that the adsorption was spontaneous and exothermic. Lastly, the mechanism of the influence of ionic strength on the adsorption was discussed. (C) 2013 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Palygorskite Ion Beam Bombardment Methylene Blue Adsorption
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.clay.2013.08.033
关键词[WOS]	FIXED-BED COLUMN ; ACTIVATED CARBON ; REACTIVE DYE ; SORPTION ; REMOVAL ; EQUILIBRIUM ; BENTONITE ; CHITOSAN ; KINETICS ; BIOMASS
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Mineralogy
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Mineralogy
WOS记录号	WOS:000326661300019
引用统计	被引频次：88[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/22153
专题	技术生物与农业工程研究所
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Ion Beam Bioengn, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jing,Cai, Dongqing,Zhang, Guilong,et al. Adsorption of methylene blue from aqueous solution onto multiporous palygorskite modified by ion beam bombardment: Effect of contact time, temperature, pH and ionic strength[J]. APPLIED CLAY SCIENCE,2013,83-84:137-143.
APA	Zhang, Jing.,Cai, Dongqing.,Zhang, Guilong.,Cai, Chuanjie.,Zhang, Caili.,...&Wu, Zhengyan.(2013).Adsorption of methylene blue from aqueous solution onto multiporous palygorskite modified by ion beam bombardment: Effect of contact time, temperature, pH and ionic strength.APPLIED CLAY SCIENCE,83-84,137-143.
MLA	Zhang, Jing,et al."Adsorption of methylene blue from aqueous solution onto multiporous palygorskite modified by ion beam bombardment: Effect of contact time, temperature, pH and ionic strength".APPLIED CLAY SCIENCE 83-84(2013):137-143.