Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Autor:	Kiara Pauline O Devanadera, Shu-Hsien Huang, Micah Belle Marie Yap Ang, Ruth R. Aquino, Jeremiah C. Millare, Alyssa Nicole R Duena, Kueir-Rarn Lee, Zheng-Yen Luo, Yu-Hsuan Chiao
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	oil–water separation Sodium Ultrafiltration chemistry.chemical_element Filtration and Separation 02 engineering and technology montmorillonite lcsh:Chemical technology mixed-matrix membrane Article chemistry.chemical_compound Crystallinity 020401 chemical engineering Chemical Engineering (miscellaneous) lcsh:TP1-1185 lcsh:Chemical engineering 0204 chemical engineering cellulose acetate Ion exchange Process Chemistry and Technology lcsh:TP155-156 021001 nanoscience & nanotechnology Cellulose acetate Montmorillonite Membrane chemistry Chemical engineering Emulsion ultrafiltration 0210 nano-technology
Zdroj:	Membranes Volume 11 Issue 2 Membranes, Vol 11, Iss 80, p 80 (2021)
ISSN:	2077-0375
Popis:	In this study, cellulose acetate (CA) mixed-matrix membranes were fabricated through the wet-phase inversion method. Two types of montmorillonite (MMT) nanoclay were embedded separately: sodium montmorillonite (Na-MMT) and organo-montmorillonite (O-MMT). Na-MMT was converted to O-MMT through ion exchange reaction using cationic surfactant (dialkyldimethyl ammonium chloride, DDAC). Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) compared the chemical structure and composition of the membranes. Embedding either Na-MMT and O-MMT did not change the crystallinity of the CA membrane, indicating that the nanoclays were dispersed in the CA matrix. Furthermore, nanoclays improved the membrane hydrophilicity. Compared with CANa-MMT membrane, CAO-MMT membrane had a higher separation efficiency and antifouling property. At the optimum concentration of O-MMT in the CA matrix, the pure water flux reaches up to 524.63 ± 48.96 L∙m&minus 2∙h&minus 1∙bar&minus 1 with over 95% rejection for different oil-in-water emulsion (diesel, hexane, dodecane, and food-oil). Furthermore, the modified membrane delivered an excellent antifouling property.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80f4a173805dd9a6fdb5aa7296727852 http://europepmc.org/articles/PMC7911741 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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