Improved pervaporation dehydration performance of alginate composite membranes by embedding organo-montmorillonite

被引:13
作者
Gallardo, Marwin R. [1 ,2 ]
Duena, Alyssa Nicole [3 ]
Ang, Micah Belle Marie Yap [1 ,2 ]
Gonzales, Ralph Rolly [4 ]
Millare, Jeremiah C. [3 ]
Aquino, Ruth R. [5 ]
Li, Chi-Lan [1 ,2 ]
Tsai, Hui-An [1 ,2 ]
Huang, Shu-Hsien [1 ,2 ,6 ]
Lee, Kueir-Rarn [1 ,2 ,7 ]
机构
[1] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Taoyuan 32023, Taiwan
[2] Chung Yuan Christian Univ, Dept Chem Engn, Taoyuan 32023, Taiwan
[3] Mapua Univ, Sch Chem Biol & Mat Engn & Sci, Manila 1002, Philippines
[4] Kobe Univ, Res Ctr Membrane & Film Technol, Kobe, Hyogo, Japan
[5] Colegio Muntinlupa, Gen Educ Dept, Mayor J Posadas Ave, Muntinlupa 1770, Metro Manila, Philippines
[6] Natl Ilan Univ, Dept Chem & Mat Engn, Yilan 26047, Taiwan
[7] Chung Yuan Christian Univ, Res Ctr Circular Econ, Taoyuan 32023, Taiwan
关键词
Pervaporation; Montmorillonite; Sodium alginate; Isopropanol; SODIUM-ALGINATE; HYBRID MEMBRANES; NA-MONTMORILLONITE; WATER MIXTURES; ETHANOL-WATER; SEPARATION; NANOSHEETS; MATRIX; ANNIHILATION; ISOPROPANOL;
D O I
10.1016/j.seppur.2023.123619
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In this work, two different montmorillonite (MMT) nanoclays were incorporated in sodium alginate (Alg) so-lution for fabrication of hybrid membrane for pervaporative separation of aqueous isopropanol solution. Sodium-MMT (Na-MMT) was modified to organo-montmorillonite (O-MMT) using cationic surfactant dialkyldimethyl ammonium chloride (DDAC). The influence of incorporating MMTs on the membrane properties and separation performance was investigated. Intercalating of DDA(+) on Na-MMT tailored the chemical structure and morphology of the MMTs. Integrating of MMTs modified the physicochemical properties of the membranes. The membrane morphology shows the homogeneous dispersion of MMTs in athe Alg matrix. Positron annihilation lifetime spectroscopy analysis revealed a tuned microstructure of the membranes. Swelling measurements showed better compatibility of O-MMT than the Na-MMT with the Alg matrix. As a result, AlgO-MMT had better separation performance than the AlgNa-MMT with permeation flux of 4764 g center dot m(-2)center dot h(-1) and water concentration in permeate of 99.99 wt% on dehydrating 70 wt% IPA/water aqueous solution at 25 degrees C. Owing to the favorable compatibility between the polymer and filler, AlgO-MMT membrane demonstrated stability at different perva-poration operating conditions and long-term use. Our results demonstrated that the properties and separation performance of Alg membrane can be enhanced through incorporation of O-MMTs.
引用
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页数:9
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