2017 Fiscal Year Final Research Report
Development of inorganic based reverse osmosis membranes for acetic acid separation
| Project/Area Number |
15K06548
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 無機系逆浸透膜 / 対向拡散CVD法 / 酢酸 / 酸安定性 |
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| Outline of Final Research Achievements |
Inorganic reverse osmosis membranes for acid separation have been developed. The membranes were prepared by using a counter diffusion CVD method using Diphenyldimethoxysilane having two phenyl groups as a silica source. High rejection of sulfuric acid over 90 % with the total flux of 17.6 kg m-2 h-1 was found through the membrane deposited at 270 °C. The flux was more than three times higher than the target flux. Next, the influence on the sulfuric acid durability was investigated by changing the membrane substrates. The membrane deposited on a γ-alumina substrate showed no selectivity after immersion in sulfuric acid for 48 hours, while the membrane deposited on a silica substrate kept its selectivity. We found that the membrane substrates have a great influence on acid durability.
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| Free Research Field |
膜分離工学
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