書誌事項
- タイトル別名
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- A Mechanistic Study of Solutes Permeation through Polyamide Reverse Osmosis Membranes
- ポリアミドケイ ギャクシントウマク ニ オケル オセン ブッシツ ノ トウカ メカニズム
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説明
Reverse osmosis/nanofiltration (RO/NF) membranes are attractive water purification technologies because of the capability to provide an effective barrier for a wide range of contaminants in a single treatment step. However, solute permeation mechanisms by RO/NF membranes remain to be fully elucidated. The objective of this study was to perform permeation experiments using two commercial polyamide RO membranes under various pH and hydraulic pressure conditions, and to analyze the permeation data with a transport model with the goal of evaluating the importance of advective solute permeation. The experimental data and subsequent data analysis revealed that the main permeation mechanism for As(III) and NO3- through RO/NF membranes was partition-diffusion mechanism and advective transport is not a dominant permeation mechanism. On the other hand, adevective permeation played a more important role for Cl- and accounted for more than 50% of total Cl- permeation depending on treatment conditions. These results indicate that the rejection of Cl- could be significantly improved by forming polyamide active layers with the absence of nano-scale pinholes. However, the RO membrane having higher advective water permeability was found to have a thicker and smoother polyamide active layer, meaning these physical properties were not correlated with the occurrence of nano-scale pinhole formation in polyamide active layers.
収録刊行物
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- 資源と素材
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資源と素材 129 (8_9), 585-590, 2013
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390282680257967488
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- NII論文ID
- 10031188228
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- NII書誌ID
- AA12188381
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- ISSN
- 18840450
- 18816118
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- NDL書誌ID
- 024826168
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
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- 使用不可