CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Removal of Cr(VI) from aqueous solution using amino-modified Fe3O4-SiO2-chitosan magnetic microspheres with high acid resistance and adsorption capacity
Sun, Xitong1,2,3; Yang, Liangrong2; Dong, Tingting2,3; Liu, Zhini2,4; Liu, Huizhou1,2
2016-03-10
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume133Issue:10Pages:43078
AbstractA 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.
KeywordApplications Adsorption Biomaterials Emulsion Polymerization Magnetism And Magnetic Properties
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/APP.43078
Indexed BySCI
Language英语
WOS KeywordHEXAVALENT CHROMIUM REMOVAL ; IRON-OXIDE NANOPARTICLES ; HEAVY-METALS REMOVAL ; RAPID REMOVAL ; WASTE-WATER ; GAMMA-FE2O3 NANOPARTICLES ; CHITOSAN BEADS ; IONS ; ADSORBENT ; COMPOSITE
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
Funding OrganizationNational 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 IDWOS:000367852900017
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20256
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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):43078.
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),43078.
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):43078.
Files in This Item:
File Name/Size DocType Version Access License
Sun_et_al-2016-Journ(1002KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, Xitong]'s Articles
[Yang, Liangrong]'s Articles
[Dong, Tingting]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, Xitong]'s Articles
[Yang, Liangrong]'s Articles
[Dong, Tingting]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, Xitong]'s Articles
[Yang, Liangrong]'s Articles
[Dong, Tingting]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.