Ethanol separation from ethanol aqueous solution by pervaporation using hydrophobic mesoporous silica membranes
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- JIN Tetsuro
- National Institute of Advanced Industrial Science and Technology (AIST)
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- MA Yalu
- National Institute of Advanced Industrial Science and Technology (AIST)
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- MATSUDA Wakana
- National Institute of Advanced Industrial Science and Technology (AIST)
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- MASUDA Yoshitake
- National Institute of Advanced Industrial Science and Technology (AIST)
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- NAKAJIMA Mikie
- Japan Chemical Engineering & Machinery Co., Ltd.
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- NINOMIYA Kohei
- Japan Chemical Engineering & Machinery Co., Ltd.
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- HIRAOKA Toshiharu
- Japan Chemical Engineering & Machinery Co., Ltd.
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- DAIKO Yusuke
- Department of Materials Science and Chemistry, University of Hyogo
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- YAZAWA Tetsuo
- Department of Materials Science and Chemistry, University of Hyogo
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Pervaporation of ethanol from ethanol/water mixture solution using surface-modified mesoporous silica membranes has been carried out. The mesoporous silica layers were prepared on commercially available porous alumina tubes by dip-coating in a series of silica sols. Subsequently, organosilane compounds with different alkyl chain lengths [CnH2n+1(CH3)2SiCl; n = 1, 3, 8, 12, and 18] were covalently reacted to the surface of these mesoporous layers with high coverage. Surface-modified mesoporous silica membranes showed ethanol permselectivity and the total flux increased with increasing ethanol concentration in feed composition and feed temperature. Ethanol separation factors in the range from 7.90 to 8.24 and total flux of 2.76–2.89 kg·m−2·h−1 were obtained by pervaporation at 323 K and at 5 wt % ethanol feed composition using surface modified membranes. In the presence of 1 wt % acetic acid in a ternary model fermentation (5 wt % ethanol–94 wt % water–1 wt % acetic acid), separation factor and total flux were decreased, and this tendency was minimized by increasing pH above pKa⊖ (pKa⊖ = 4.74 at 298 K) and changing HOAc to OAc− ions in the feed solution.
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 119 (1391), 549-556, 2011
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390282680263532544
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- NII論文ID
- 130000784428
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- NII書誌ID
- AA12229489
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- COI
- 1:CAS:528:DC%2BC3MXovFemu7o%3D
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- ISSN
- 13486535
- 18820743
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- NDL書誌ID
- 11135809
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
