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Spatial confinement and ion exchange synergetic strategy for highly selective removal of metal ions from the spinning solution containing ionic liquids

Chen, Shangqing1,2,3; Wei, Zewei1,2,3; Wang, Junfeng1,2,3; Nie, Yi1,2,3; Zhang, Suojiang1,2,3
2022-06-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume437Pages:9
AbstractThe accumulation of metal ions (Na+, K+, Ca2+, Mg2+, Fe3+, Cu2+ and Zn2+) in the coagulating and water baths generated during the spinning process using ionic liquids (ILs) as solvent seriously affects the strength and textile performance of regenerated cellulose fibers, and make a huge challenge for the recycling and reuse of ILs. In this work, a spatial confinement and ion exchange synergetic strategy was adopted and the molecular sieves with proper pore size and exchangeable structural metal ions were used. Batch adsorption demonstrated the superior removal efficiency and high selectivity of the 10X molecular sieve towards different metal ions. As a result, the highest removal ratios of 82.7%, 95.2%, 93.5%, 97.3%, 99.1% were achieved for K+, Ca2+, Mg2+,& nbsp;Cu2+ and Zn2+, respectively, and that for IL (1-ethyl-3-methylimidazolium diethyl phosphate, [Emim]Dep) was below 0.6%. Moreover, the adsorbed 10X could be facilely eluted and reused by the HCl solution. The fixed-bed experiments found that the 40.2 BV [Emim]Dep solution could be entirely purified at a contact time of 10 min, further indicating its favorable removal efficiency and long-term application perspective. All these results confirmed that this commercial and cost-effective molecular sieve could be used in the efficient separation of trace metal ions from the aqueous solutions with high IL concentration produced during the cellulose spinning process.
KeywordCellulose spinning Ionic liquids Metal ions removal Molecular sieves
DOI10.1016/j.cej.2022.135425
Language英语
WOS KeywordAMMONIUM MOLYBDOPHOSPHATE ; WASTE BIOMASS ; CELLULOSE ; RECOVERY ; COMPOSITE ; WATER ; ADSORPTION ; MECHANISM ; ELECTRODIALYSIS ; BREAKTHROUGH
Funding ProjectNational Natural Science Foundation of China[21978302] ; National Natural Science Foundation of China[U20A20149] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2020DB05] ; China Postdoctoral Science Foundation[2021TQ0333]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; China Postdoctoral Science Foundation
WOS IDWOS:000779475900004
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52732
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Junfeng; Zhang, Suojiang
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Shangqing,Wei, Zewei,Wang, Junfeng,et al.

Spatial confinement and ion exchange synergetic strategy for highly selective removal of metal ions from the spinning solution containing ionic liquids

[J]. CHEMICAL ENGINEERING JOURNAL,2022,437:9.
APA Chen, Shangqing,Wei, Zewei,Wang, Junfeng,Nie, Yi,&Zhang, Suojiang.(2022).

Spatial confinement and ion exchange synergetic strategy for highly selective removal of metal ions from the spinning solution containing ionic liquids

.CHEMICAL ENGINEERING JOURNAL,437,9.
MLA Chen, Shangqing,et al."

Spatial confinement and ion exchange synergetic strategy for highly selective removal of metal ions from the spinning solution containing ionic liquids

".CHEMICAL ENGINEERING JOURNAL 437(2022):9.
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