Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity

doi:10.1002/APP.43078

QIBEBT-IR > 资源环境与绿色分离研究组

	Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity
	Sun, Xitong 1,2,3; Yang, Liangrong 2; Dong, Tingting 2,3; Liu, Zhini 2,4; Liu, Huizhou1,2
	2016-03-10
发表期刊	JOURNAL OF APPLIED POLYMER SCIENCE
卷号	133 期号:10
摘要	A novel, bioadsorbent material of polyethylenimine-modified magnetic chitosan microspheres enwrapping magnetic silica nanoparticles (Fe3O4-SiO2-CTS-PEI) was prepared under relatively mild conditions. The characterization results indicated that the adsorbent exhibited high acid resistance and magnetic responsiveness. The Fe3O4 loss of the adsorbent was measured as 0.09% after immersion in pH 2.0 water for 24 h, and the saturated magnetization was 11.7 emu/g. The introduction of PEI obviously improved the adsorption capacity of Cr(VI) onto the adsorbent by approximately 2.5 times. The adsorption isotherms and kinetics preferably fit the Langmuir model and the pseudo-second-order model. The maximum adsorption capacity was determined as 236.4 mg/g at 25 degrees C, which was much improved compared to other magnetic chitosan materials, and the equilibrium was reached within 60 to 120 min. The obtained thermodynamic parameters revealed the spontaneous and endothermic nature of the adsorption process. Furthermore, the Cr(VI)-adsorbed adsorbent could be effectively regenerated using a 0.1 mol/L NaOH solution, and the adsorbent showed a good reusability. Due to the properties of good acid resistance, strong magnetic responsiveness, high adsorption capacity, and relatively rapid adsorption rate, the Fe3O4-SiO2-CTS-PEI microspheres have a potential use in Cr(VI) removal from acidic wastewater. (C) 2015 Wiley Periodicals, Inc.
文章类型	Article
关键词	Applications Adsorption Biomaterials Emulsion Polymerization Magnetism And Magnetic Properties
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1002/APP.43078
关键词[WOS]	HEXAVALENT CHROMIUM REMOVAL ; IRON-OXIDE NANOPARTICLES ; HEAVY-METALS REMOVAL ; RAPID REMOVAL ; WASTE-WATER ; GAMMA-FE2O3 NANOPARTICLES ; CHITOSAN BEADS ; IONS ; ADSORBENT ; COMPOSITE
收录类别	SCI
语种	英语
WOS研究方向	Polymer Science
项目资助者	National Natural Science Foundation of China(21106162) ; National Key Natural Science Foundation of China(21136009) ; Major Project of National Natural Science Foundation of China(51090382)
WOS类目	Polymer Science
WOS记录号	WOS:000367852900017
引用统计	被引频次：47[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/7914
专题	资源环境与绿色分离研究组
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xiangtan Univ, Coll Chem Engn, Xiangtan 411105, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xitong,Yang, Liangrong,Dong, Tingting,et al. Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2016,133(10).
APA	Sun, Xitong,Yang, Liangrong,Dong, Tingting,Liu, Zhini,&Liu, Huizhou.(2016).Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity.JOURNAL OF APPLIED POLYMER SCIENCE,133(10).
MLA	Sun, Xitong,et al."Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity".JOURNAL OF APPLIED POLYMER SCIENCE 133.10(2016).