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Separation Science and Technology Volume 52, 2017 - Issue 6
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Membranes

Fabrication of cation exchange membrane from polyvinyl alcohol using lignin sulfonic acid: Applications in diffusion dialysis process for alkali recovery

Noor Ul AfsarCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Dongbo YuCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Congliang ChengCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Kamana EmmanuelCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Liang GeCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Bin WuCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Abhishek N. MondalCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
,
Muhammad Imran KhanCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaView further author information
&
Tongwen XuCAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, P.R. ChinaCorrespondence[email protected]
View further author information
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Pages 1106-1113 | Received 26 Apr 2016, Accepted 04 Jan 2017, Published online: 22 Feb 2017
 
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ABSTRACT

We report polyvinyl alcohol (PVA)-based hybrid membranes composed of salt of lignin sulfonic acid (LSA) and tetraethyl orthosilicate. The concentration of LSA with respect to PVA varied from 10% to 40%. The hybrid membranes showed water uptake (WU) in the range of 122–210%, ion exchange capacities in the range of 0.32–0.75 mmol g−1, dialysis coefficient (UOH) from 0.0068 to 0.0119 m h−1, and selectivity (S) from 15 to 26. The hybrid membranes also showed thermal and mechanical stability.

Funding

Financial supports received from the National Science Foundation of China (No. 91534203), Key Technologies R & D Program of Anhui Province (No.1501041127), and One Hundred Person Project of the Chinese Academy of Sciences are gratefully acknowledged. Noor is very thankful to Chinese Government Scholarship Council (CGSC) for financial support.

Additional information

Funding

Financial supports received from the National Science Foundation of China (No. 91534203), Key Technologies R & D Program of Anhui Province (No.1501041127), and One Hundred Person Project of the Chinese Academy of Sciences are gratefully acknowledged. Noor is very thankful to Chinese Government Scholarship Council (CGSC) for financial support.

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