| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-02-19 |
| タイトル |
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|
タイトル |
Integrating coagulation and submerged nanofiltration for achieving low-energy drinking water treatment |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Boivin, Sandrine
Sano, Hideaki
Okuda, Tetsuji
Fujioka, Takahiro
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Membrane fouling continues to be a major challenge for the long-term sustainability of nanofiltration (NF) systems used in surface water treatment, highlighting the need for effective pretreatment strategies to mitigate this issue. This study evaluated the effect of pre-coagulation with polyaluminum chloride (PACl) on fouling reduction in a submerged flat-sheet NF membrane system. An optimized dose of PACl and two mixing conditions were tested: rapid mixing followed by slow mixing and rapid mixing alone. Both PACl pre-coagulation methods significantly decreased turbidity and mitigated fouling compared to direct filtration. However, the combination of rapid and slow mixing proved more effective, resulting in a 24% increase in transmembrane pressure (TMP) after 24 d compared to a 32% increase with rapid mixing alone. The mixing conditions led to different fouling mechanisms and cake-layer characteristics. The combination of rapid and slow mixing produced a thin layer with minimal hydraulic resistance, whereas rapid mixing alone resulted in higher residual turbidity and the formation of a thick, gelatinous cake layer. Although operationally simpler, the rapid mixing alone approach offers less fouling mitigation and organic matter removal. However, the optimal rapid and slow mixing conditions showed a downside: they created a favorable environment for biofouling, as indicated by an increase in TMP after 17 d. This study underscores that PACl pre-coagulation effectively mitigates membrane fouling; however, strategies to actively manage the resulting fouling conditions are crucial for ensuring the long-term reliable performance and implementation of submerged NF systems for sustainable advanced water treatment. |
|
言語 |
en |
| 書誌情報 |
en : Separation and Purification Technology
巻 392,
p. art. no. 137171,
発行日 2026-02-11
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| 出版者 |
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出版者 |
Elsevier B.V. |
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言語 |
en |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
13835866 |
| DOI |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1016/j.seppur.2026.137171 |
| 権利 |
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|
権利情報 |
© 2026 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/. |
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言語 |
en |
| 著者版フラグ |
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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 |
Separation and Purification Technology, 392, art. no. 137171; 2026 |
|
言語 |
en |
SPT392_137171.pdf (925 KB)
