JP2018012082A - 光照射による水溶液の膜分離方法 - Google Patents
光照射による水溶液の膜分離方法 Download PDFInfo
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UNBOSJFEZZJZLR-CCEZHUSRSA-N Nc(cc1)ccc1/N=N/c(cc1)ccc1[N+]([O-])=O Chemical compound Nc(cc1)ccc1/N=N/c(cc1)ccc1[N+]([O-])=O UNBOSJFEZZJZLR-CCEZHUSRSA-N 0.000 description 1
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- ZVQOOHYFBIDMTQ-UHFFFAOYSA-N [methyl(oxido){1-[6-(trifluoromethyl)pyridin-3-yl]ethyl}-lambda(6)-sulfanylidene]cyanamide Chemical compound N#CN=S(C)(=O)C(C)C1=CC=C(C(F)(F)F)N=C1 ZVQOOHYFBIDMTQ-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
4−フェニルアゾフェノールのDMF溶液(0.1g/mL)約1mLを、セルロース製ろ紙(桐山製作所製、桐山ロート用ろ紙、Φ40、No.5A)全面に塗布し、約2時間静置した。得られたろ紙を150℃で一晩処理した。その後、上記の塗布・静置・処理をもう一度行った。得られたろ紙を200mLの蒸留水中に一晩浸漬した後、40℃で乾燥させた。その後、上記の浸漬・乾燥をもう一度行って濃い黄色の4−フェニルアゾフェノール導入ろ紙を得た。また、ディスパースレッド1のDMF溶液(0.1g/mL)を用いて、同様の方法によって、濃い赤色のディスパースレッド1導入ろ紙を得た。
PTFE製メンブレンフィルター(アドバンテック社製、直径47mm、細孔径0.8μm)に最小量のアセトンを含浸させ、すぐに4−フェニルアゾフェノールのDMF溶液(0.1g/mL)約1mLをこのフィルター全面に塗布し、約5日間静置した。つぎに、得られたフィルターを40℃で一晩処理し、さらに200mLの蒸留水中に一晩浸漬した。その後、得られたフィルターを40℃で乾燥させて、黄色の4−フェニルアゾフェノール導入フィルターを得た。
ディスパースレッド1のDMF溶液(0.1g/mL)を用いて、実施例2と同様の方法によって、薄い赤色のディスパースレッド1導入PTFE製フィルターを得た。また、疎水性の低いポリエーテルサルホン(PES)製メンブレンフィルター(アズワン社製、直径47mm)に、ディスパースレッド1のイソプロパノール溶液(0.1g/mL)約1mLを全面に塗布し、約5日間静置した。その後、このメンブレンフィルターを40℃で一晩処理し、得られたフィルターを200mLの蒸留水中に一晩浸漬した後、40℃で乾燥し、濃い赤色のディスパースレッド1導入PES製フィルターを得た。
水難溶性であるディスパースオレンジ3(下記化学式)のDMF溶液(0.1g/mL)を用いて、同様の方法によって、橙色のディスパースオレンジ3導入フィルターを得た。
ソーラシュミレータ(三永電機製作所製、XES−300S)を用いて、実施例3で作製したディスパースレッド1導入PTFE製フィルターに擬似太陽光を照射しながら、水を膜分離した。すなわち、ディスパースレッド1導入PTFE製フィルターに1000μL(1mL)の蒸留水を載置し、ソーラシュミレータによる擬似太陽光を1SUNの条件で1時間照射して、実施例2と同様の方法で水の分離膜透過性能を評価した。1SUNは、概ね晴れた夏の日の正午の太陽エネルギーに相当する。なお、この膜分離は繰り返して計2回行った。その結果を表5に示す。
膜としては非修飾のアドバンテック社製PTFE製メンブレンフィルター(直径47mm、細孔径0.8μm)を実施例5と同じテフロン(登録商標)製リングの上に置き、その中心部に実施例4で作製したアゾベンゼン化合物のシリカゲル0.1gを載置した。カラムクロマトグラフ用のシリカゲル(メルク社製、シリカゲル60)0.5gに、ディスパースレッド1のDMF溶液(0.1g/mL)を1mL含浸させ、室温で5日間静置した。その後、DMF溶液の上澄みを除去し、80℃で一晩加熱処理した。得られたシリカゲルを100mLの水に浸漬して、DMFと余剰のディスパースレッド1を除去した。この処理を計3回行い、濃い赤色の粉状粒子であるディスパースレッド1導入シリカゲルを得た。
Claims (5)
- 多孔性の樹脂または紙から構成される膜部材と、前記膜部材の少なくとも表面に設けられた可逆的光異性化性化合物とを有する分離膜。
- 表面が疎水性である多孔性膜部材と、前記多孔性膜部材の表面に設けられた粒子とを有する分離膜であって、
前記粒子が、可逆的光異性化性化合物の粒子および可逆的光異性化性化合物が修飾された粒子の少なくとも一方である分離膜。 - 請求項1または2において、
前記膜部材が多孔性のポリテトラフルオロエチレンから構成される分離膜。 - 請求項1から3のいずれかにおいて、
前記可逆的光異性化性化合物がアゾベンゼン骨格を備える分離膜。 - 請求項1から4のいずれかの分離膜の一方の面に水溶液を載置し、前記可逆的光異性化性化合物が正異性化反応および逆異性化反応を起こす光を前記分離膜に照射して、前記水溶液に含まれていた溶質の濃度が低下した膜分離水溶液または水を前記分離膜の他方の面から採取する水溶液の膜分離方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019129875A (ja) * | 2018-01-29 | 2019-08-08 | 株式会社三洋物産 | 遊技機 |
US20210197099A1 (en) * | 2018-05-31 | 2021-07-01 | Battelle Memorial Institute | Photoactive separation of solutes |
JP2022130254A (ja) * | 2021-02-25 | 2022-09-06 | 均 石井 | 海水淡水化のコスト削減方法 |
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- 2016-07-22 JP JP2016144076A patent/JP6721909B2/ja active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019129875A (ja) * | 2018-01-29 | 2019-08-08 | 株式会社三洋物産 | 遊技機 |
US20210197099A1 (en) * | 2018-05-31 | 2021-07-01 | Battelle Memorial Institute | Photoactive separation of solutes |
US12011678B2 (en) * | 2018-05-31 | 2024-06-18 | Battelle Memorial Institute | Photoactive separation of solutes |
JP2022130254A (ja) * | 2021-02-25 | 2022-09-06 | 均 石井 | 海水淡水化のコスト削減方法 |
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