Preventing Oxidative Damage in Commercial RO/NF Membranes by Tannic Acid Treatment
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- Sato Yuya
- Organo Corporation R&D Center
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- Tamura Makio
- Organo Corporation R&D Center
Bibliographic Information
- Other Title
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- タンニン酸を用いた市販RO/NF膜の酸化剤耐性処理
- タンニンサン オ モチイタ シハン RO NFマク ノ サンカザイ タイセイ ショリ
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Abstract
This paper concerns the prevention of oxidative damage in commercial RO/NF membranes by treatment with tannic acid. We investigated the effects of periodic tannic acid treatments on separation performance and flux in membranes with oxidative damage. First, we studied LES90 as an NF membrane. We found that the untreated membrane showed oxidative damage with the increase in flux and decrease in separation performance. Furthermore, the treated membrane showed tolerance to oxidants as stable flux and stable separation performance. We assumed that tannic acid was more likely to react with oxidants than the membrane. Specifically, tannic acid reacted with the oxidants before the membrane. In this way, tannic acid functioned to protect the membrane from oxidative damage. Next, we studied ES10 as an RO membrane. We found that the treated membrane showed tolerance to oxidants. However, the treatment was less effective than in the case of LES90. We supposed that the adsorption level of tannic acid in ES10 was less than in LES90.
Journal
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- KAGAKU KOGAKU RONBUNSHU
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KAGAKU KOGAKU RONBUNSHU 34 (5), 499-504, 2008
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390001204509842304
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- NII Article ID
- 10024351258
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- NII Book ID
- AN00037234
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- ISSN
- 13499203
- 0386216X
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- NDL BIB ID
- 9662984
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed