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National Chung Hsing University Institutional Repository - NCHUIR > 工學院 > 化學工程學系所 > 依資料類型分類 > 期刊論文 >  Adsorption of phenolic compounds onto trimethylstearylammonium surfactant-immobilized cation-exchange membranes

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/126259

標題: Adsorption of phenolic compounds onto trimethylstearylammonium surfactant-immobilized cation-exchange membranes
作者: Wang, Tien-Yu;Hsu, Chih-Hsiung;Chen, Tzu-Ping;Eric, D.Conte;Fenner, Drew;Crossley, Lisa;Honeyman, C.Howie;Suen, Shing-Yi
Contributors: 國立中興大學化學工程學系
National Chung Hsing University,Department of Chemical Engineering
Miao-zhen Luo
關鍵字: Trimethylstearylammonium surfactant;Cation-exchange membrane;Hemimicelle;Admicelle;Phenolic compound;Adsorption
日期: 2011-11
Issue Date: 2012-10-26 09:28:20 (UTC+8)
Publisher: Elsevier B.V.
摘要: Trimethylstearylammonium hydroxide/methoxide surfactants were immobilized onto two kinds of cation-exchange membranes (P81 and S2001) for the adsorption of phenolic compounds in the present study. The results indicate that the membrane with a doubled cation-exchange capacity (S2001) could attain nearly twice of the immobilized surfactant amount, but its surfactant immobilization % was close to or lower than the one with a smaller cation-exchange capacity (P81). By manipulating the feed surfactant concentration, different surfactant arrangements on the membrane surfaces (such as hemimicellar, admicellar, or mixed structure) could be produced. The membranes with theoretically 100% surfactant immobilization revealed the highest hydrophobicity level, and thus they were applied in the batch adsorption of phenolic compounds. According to the batch adsorption results of four phenolic compounds onto the surfactant-immobilized membranes (100% immobilization), the main adsorption mechanism should be hydrophobic interaction and the order of phenolic compound adsorptivity was phenol < 4-nitrophenol < 4-chloro-3-methylphenol ≤ bisphenol A, identical to their log Kow order. Moreover, in a batch adsorption/desorption cycle with 100 mL of 1 ppm bisphenol A aqueous sample tested and 5 mL of 2-propanol as the desorbent, the S2001 membrane (100% surfactant immobilization) could completely recover bisphenol A from water at a 20-fold enrichment.
Relation: Microchemical Journal, Volume 99, Issue 2, Page(s) 388-393.
Appears in Collections:[依資料類型分類] 期刊論文

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