成果報告書詳細
管理番号20160000000251
タイトル*平成27年度中間年報 エネルギー・環境新技術先導プログラム 正浸透膜法を用いた革新的省エネ型水処理技術の開発
公開日2016/5/17
報告書年度2015 - 2015
委託先名国立大学法人神戸大学 国立大学法人広島大学 国立大学法人徳島大学 国立大学法人山口大学 東洋紡株式会社
プロジェクト番号P14004
部署名イノベーション推進部
和文要約
英文要約1. Development of DS that has high osmotic pressure and is easily regenerable with less energy
1-1. Estimation of thermodynamic properties of ionic liquid (IL) solutions by quantum chemical calculation
Thermodynamic properties such as liquid-liquid two-phase equilibrium and phase transition temperature of IL solutions were estimated by COSMO-RS method. The results indicated the appropriateness of this approach for screening for DS with desirable characteristics.
1-2. Analysis of phase transition of ILs using molecular dynamics simulation
Two known DS solutions were selected to establish a phase transition model by a molecular dynamics simulation method. The results showed the suitability of this simulation method.
1-3. Development of ILs with high osmotic pressure and analysis of their mechanism
Osmotic pressures of 9 IL solutions which showed lower critical solution temperature (LCST) phase transition were measured. Though osmotic pressures were found to depend on both cations and anions of ILs, cations seemed to have more effect on osmotic pressure than anions.
1-4. Development of ILs with LCST phase transition for regeneration by low energy
Phase diagrams of 9 IL solutions were investigated. The data revealed a relationship between molecular species and lower critical temperature as well as molecular species and IL concentrations of upper and lower layers.

2. Development of innovative FO membrane specified for forward osmosis
2-1. Designing of new water channel molecules and simulation of water permeation
Using known water channel peptides (8CP and Mba-8CP), nanotube water channel structures were established by computer simulations. The contribution of hydrophobic side chains of water channel molecules to water permeance was calculated using this model.
2-2. Preparation of water channel molecules and incorporation into liposome membrane
Amphotericin B (AmB) was used to develop methods for incorporation of water channel molecules into lipid bilayer membrane while retaining their activity. The relationship between conformational structure of water channel molecule and water permeance was investigated in the liposome system.
2-3. Preparation of supported lipid bilayer membrane with water channel and evaluation of its performance
Using AmB as a model water channel molecule, liposomes containing AmB were placed onto a support porous membrane pretreated to have alkyl side chains. The prepared planar supported lipid membrane showed lipid fluidity and a good water permeance and a high rejection against salts.

3. Evaluation of FO membrane process for water treatment and its feasibility study
Triacetate cellulose hollow fiber FO membrane and inorganic salts as DS were used to construct a model FO process. Water permeability data were obtained under various operation conditions. Using this model, energy balance was calculated to compare with other water treatment processes.
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