CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution
Sun, Xitong1; Li, Qian2; Yang, Liangrong3; Liu, Huizhou1,3
Source PublicationPARTICUOLOGY
AbstractA 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.
KeywordChitosan Quaternary Ammonium Magnetic Adsorption Cr(Vl)
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21106162) ; National Key Natural Science Foundation of China(21136009) ; Major Project of the National Natural Science Foundation of China(51090382) ; General Research Project of Liaoning Education Department(L2015045) ; Youth Foundation of Dalian Polytechnic University(67007908)
WOS IDWOS:000375502100009
Citation statistics
Document Type期刊论文
Affiliation1.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
Recommended Citation
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(JUN):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(JUN),79-86.
MLA Sun, Xitong,et al."Chemically modified magnetic chitosan microspheres for Cr(VI) removal from acidic aqueous solution".PARTICUOLOGY 26.JUN(2016):79-86.
Files in This Item:
File Name/Size DocType Version Access License
Chemically modified (1586KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, Xitong]'s Articles
[Li, Qian]'s Articles
[Yang, Liangrong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, Xitong]'s Articles
[Li, Qian]'s Articles
[Yang, Liangrong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, Xitong]'s Articles
[Li, Qian]'s Articles
[Yang, Liangrong]'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.