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Fouling substances causing variable rejection of a small and uncharged trace organic chemical by reverse osmosis membranes
http://hdl.handle.net/10069/39608
http://hdl.handle.net/10069/3960824c44db1-34db-4742-91ce-669b7a7c13ed
名前 / ファイル | ライセンス | アクション |
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ETI17_100576.pdf (402.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-12-18 | |||||
タイトル | ||||||
タイトル | Fouling substances causing variable rejection of a small and uncharged trace organic chemical by reverse osmosis membranes | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Membrane fouling | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Micropollutant | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | N-nitrosamine | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Potable water reuse | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Reverse osmosis | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Fujioka, Takahiro
× Fujioka, Takahiro× Aizawa, Hidenobu× Kodamatani, Hitoshi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The safety of recycled water for potable water reuse can be enhanced by improving the reliability of reverse osmosis (RO) treatment for the removal of trace organic chemicals. This study assessed the mechanisms underlying the variable rejection of a carcinogenic N-nitrosamine, namely N-nitrosodimethylamine (NDMA), caused by RO membrane fouling. Foulants that cause the variable rejection were evaluated through rejection tests and foulant characterization. The RO treatment of wastewaters with and without pre-treatment using an ultrafiltration or nanofiltration membrane showed that NDMA rejection commonly increased with increasing membrane fouling. The characterization of organics in the treated wastewater samples revealed that increased NDMA rejection can be caused by foulants composed of low-molecular-weight organics (<300 Da), including tryptophan (or tryptophan-like substances). It is speculated that small organics such as tryptophan form a densely packed cake layer on the membrane surface, which may function as an additional barrier for the membrane transport of NDMA. The results of this study indicate that RO membrane fouling that occurs during long-term wastewater treatment can increase NDMA rejection. The enhanced separation performance can yield positive consequences for the credibility of RO treatment in potable water reuse. | |||||
書誌情報 |
Environmental Technology & Innovation 巻 17, p. 100576, 発行日 2019-12-10 |
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出版者 | ||||||
出版者 | Elsevier B.V. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 23521864 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.eti.2019.100576 | |||||
権利 | ||||||
権利情報 | c 2019 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Environmental Technology and Innovation, 17, art.no.100576; 2020 |