Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 资源环境与绿色分离团队

	Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution
	Sun, Xitong 1; Li, Qian 2; Yang, Liangrong 3; Liu, Huizhou 1,3
刊名	PARTICUOLOGY
	2016-06-01
卷号	26 页码:79-86
关键词	Chitosan Quaternary ammonium Magnetic Adsorption Cr(Vl)
英文摘要	A bioadsorbent composed of magnetic silica nanoparticles encapsulated by chitosan microspheres was prepared by the emulsion cross-linking method, and it was then modified with quaternary ammonium groups by reaction with ethylenediamine and glycidyl trimethylammonium chloride. Characterization of the bioadsorbent indicated that it was highly acid resistant and magnetically responsive. The bioadsorbent was then used to remove Cr(VI) from acidic aqueous solution. The results of batch experiments indicated that the optimal pH value was 2.5, and the adsorbent exhibited low pH dependence. The maximum adsorption capacity was 233.1 mg/g at pH 2.5 and 25 degrees C, and the equilibrium time was determined to be 40-120 min depending on the initial Cr(VI) concentration. The adsorbent could be effectively regenerated using a mixture of 0.3 mol/L NaOH and 0.3 mol/L NaCl with a desorption efficiency of 95.6%, indicating high reusability. In conclusion, the bioadsorbent shows potential for Cr(Vl) removal from acidic wastewater. (C) 2016 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical ; Materials Science, Multidisciplinary
研究领域[WOS]	Engineering ; Materials Science
关键词[WOS]	HEAVY-METAL IONS ; HIGH-CAPACITY ADSORPTION ; HEXAVALENT CHROMIUM ; ADSORBENT ; NANOPARTICLES ; KINETICS ; CARBON ; BEADS ; DYE ; THERMODYNAMICS
收录类别	SCI
语种	英语
WOS记录号	WOS:000375502100009
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/8295]
专题	资源环境与绿色分离团队
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China 2.Dalian Polytech Univ, Sch Biol Engn, Dalian 116034, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xitong,Li, Qian,Yang, Liangrong,et al. Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution[J]. PARTICUOLOGY,2016,26:79-86.
APA	Sun, Xitong,Li, Qian,Yang, Liangrong,&Liu, Huizhou.(2016).Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution.PARTICUOLOGY,26,79-86.
MLA	Sun, Xitong,et al."Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution".PARTICUOLOGY 26(2016):79-86.