KMS Qingdao Institute of Biomass Energy and Bioprocess Technology ,CAS
| 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
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| 2016-03-10 | |
| Source Publication | JOURNAL OF APPLIED POLYMER SCIENCE
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| Volume | 133Issue:10 |
| Abstract | 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. |
| Subtype | Article |
| Keyword | Applications Adsorption Biomaterials Emulsion Polymerization Magnetism And Magnetic Properties |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1002/APP.43078 |
| WOS Keyword | HEXAVALENT CHROMIUM REMOVAL ; IRON-OXIDE NANOPARTICLES ; HEAVY-METALS REMOVAL ; RAPID REMOVAL ; WASTE-WATER ; GAMMA-FE2O3 NANOPARTICLES ; CHITOSAN BEADS ; IONS ; ADSORBENT ; COMPOSITE |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Polymer Science |
| Funding Organization | 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 Subject | Polymer Science |
| WOS ID | WOS:000367852900017 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qibebt.ac.cn/handle/337004/7914 |
| Collection | 资源环境与绿色分离研究组 |
| Affiliation | 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 |
| 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). |
| 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). |
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