Kobe University

Renaissance Energy Research Corporation

Kawasaki Jukogyo Kabushiki Kaisha

Asahi Kasei Chemicals Corporation

Sharp Kabushiki Kaisha Corporation

Kaneka Corporation

Nippon Shokubai Co., Ltd.

Asahi Kasei Kabushiki Kaisha

Unitika Ltd.

Kurita Water Industries Ltd.

Hideto Matsuyama

Osamu Okada

Masaaki Teramoto

Eiji Kamio

Reza Yegani

Keiko Shimada

Kaori Morimoto

Noboru Kubota

Hirokazu Fujimura

Masatoshi Hashino

Takahiro Ono

Toru Morita

Nobuaki Hanai

Katsuya Umemoto

Takahiro Kawakatsu

Tomoaki Umemura

Masaki Tsuzawa

Masayuki Kaneda

Yusuke Hirai

Kouji Fukumoto

Kazuhiro Okumura

Satoshi Kawanaka

Takuji Shintani

Atsushi Matsuoka

Misato Kunimatsu

Koji Koyama

Yuki Miyoshi

Asuka Inada

Tomohisa Yoshioka

Masahiro Yasukawa

Tomohiro Sera

Daisuke Saeki

Tadashi Kamada

Toru Takai

Keizo Nakagawa

Li-Feng Fang

Shohei Kasahara

Sheng-Yao Wang

Kazuo Hirota

Yasunori Nakanishi

An air purifying system includes: a carbon dioxide remover including first and second spaces partitioned by a gas permeable membrane with 50 nm or less diameter micropores; a feed passage leading to-be-purified air from a room to the first space; a supply passage supplying clean gas having lower carbon dioxide and higher oxygen concentrations than the to-be-purified air to the second space; a discharge passage discharging, from the second space, mixed gas; a return passage leading purified air from the first space into the room, the purified air resulting from removing carbon dioxide from the to-be-purified air; and adjusting equipment adjusting a gas pressure in the first and second spaces to be substantially equal to each other. The to-be-purified air flows in the first space along a surface of the gas permeable membrane, and the clean gas flows in the second space along a surface of the gas permeable membrane.

Air purifying system

A draw solute for forward osmosis membrane process, comprising an addition polymer obtained by addition polymerization of an alkylene oxide having 2 to 10 carbon atoms to an amine compound.

Draw solute and water treatment equipment

The objective of the present invention is to provide a composite separation membrane which is excellent in not only a liquid permeable performance and a separation performance relatively but also a durability and which is particularly useful as a membrane for liquid treatment, and a method for treating a liquid by using the composite separation membrane. The composite separation membrane according to the present invention is characterized in comprising a supporting base material and a complex layer, wherein the complex layer is placed on the supporting base material, the complex layer comprises oxidized metal nanosheets, graphene oxide and an alkanolamine, and at least one of the alkanolamine is present between the oxidized metal nanosheets.

Composite separation membrane

A porous membrane includes a modacrylic copolymer. The modacrylic copolymer includes, with respect to 100 parts by mass of all structural units constituting the modacrylic copolymer, 15 to 85 parts by mass of a structural unit derived from acrylonitrile, 15 to 85 parts by mass of a structural unit derived from at least one halogen-containing monomer selected from the group consisting of vinyl halide and vinylidene halide, and 0 to 10 parts by mass of a structural unit derived from a vinyl monomer having an ionic substituent. The porous membrane can be produced by preparing a modacrylic copolymer solution by dissolving the modacrylic copolymer in a solvent, and bringing the modacrylic copolymer solution into contact with a non-solvent for the modacrylic copolymer such that the modacrylic copolymer solution is solidified.

Porous membrane for water treatment use

A liquid having oxygen absorbing ability, comprising a cobalt-salen complex or a derivative thereof and an ionic liquid formed from an anion having an amine structure and a cation of an aliphatic quaternary phosphonium or ammonium having alkyl chains with each 2-20 carbon atoms, wherein the anion of the ionic liquid is coordinated to a cobalt ion of the cobalt-salen complex or a derivative thereof.

Liquid having oxygen absorbing ability, method for producing same, and complex solution containing same

A forward osmosis membrane characterized in that a thin membrane layer having the performance of a semi-permeable membrane is laminated on a polyketone support layer.

Forward osmosis membrane and forward osmosis treatment system

The present invention provides a RO membrane or a FO membrane comprising a coating layer made of a phospholipid bilayer membrane and formed on a surface of a porous membrane body, having a high water permeate flow rate and salt rejection performance, the membrane being a permselective membrane comprising a porous membrane having a pore size of 5 nm to 50 nm and a coating layer made of a phospholipid bilayer and formed on a surface of the porous membrane, wherein (i) the phospholipid bilayer comprises phospholipid, amphotericin B, and ergosterol; (ii) a content of the amphotericin B is 3 to 20 mol % based on the phospholipid bilayer; (iii) a total content of the ergosterol and the amphotericin B in the phospholipid bilayer is 10 to 30 mol %.

Permselective membrane, method for producing same, and water treatment method using the permselective membrane

Methods of producing a deformed porous hollow fiber membrane by thermally induced phase separation, particularly by discharging a fusion kneaded product containing a thermoplastic resin and an organic liquid through an orifice of a hollow fiber-forming deformed nozzle; cooling and solidifying the fusion kneaded product discharged through the deformed nozzle to form the product into a hollow fiber-like material having a deformed cross section at a cross section vertical to a discharging direction; and extracting away the organic liquid from the hollow fiber-like material to obtain the deformed porous hollow fiber membrane, wherein an inorganic fine powder is kneaded in the fusion kneaded product.

Production method of deformed porous hollow fiber membrane

Disclosed is a COpermselective membranehaving an amino acid ionic liquid and a porous membrane impregnated with the amino acid ionic liquid, wherein the amino acid ionic liquid contains a certain range of water.

[object Object]

A porous hollow fiber membrane that is suitable for treatment of liquid containing an inorganic substance and/or an organic substance, is obtained at a low cost performance, and has high water permeability performance, fretting resistance, and drying resistance. A deformed porous hollow fiber membrane according to the present invention is composed of a thermoplastic resin and includes a continuous asperity provided on the periphery in the longitudinal direction of the membrane, in which the periphery of the hollow fiber membrane in the circumferential direction includes continuous projected and depressed parts.

Deformed porous hollow fiber membrane, production method of deformed porous hollow fiber membrane, and module, filtration device, and water treatment method in which deformed porous hollow fiber membrane is used

A hollow fiber membrane is produced through a thermally induced phase separation process by dissolving a highly hydrophilic polyamide resin in a high-boiling-point solvent such as an aprotic polar solvent at a temperature of not lower than 100&#xb0; C. The hollow fiber membrane has a membrane surface having a water contact angle of not greater than 80 degrees, and has a water permeability of not less than 100 L/m&#xb7;atm&#xb7;h and a 0.1-&#x3bc;m particle rejection percentage of not less than 90%.

Polyamide hollow fiber membrane, and production method thereof

A CO-facilitated transport membrane of excellent carbon dioxide permeability and CO/Hselectivity, which can be applied to a COpermeable membrane reactor, is stably provided. The CO-facilitated transport membrane is formed such that a gel layerobtained by adding cesium carbonate to a polyvinyl alcohol-polyacrylic acid copolymer gel membrane is supported by a hydrophilic porous membrane. More preferably, a gel layer supported by a hydrophilic porous membraneis coated with hydrophilic porous membranesand

A dope solution for membrane production comprising polyethersulfone having high strength, high water permeability, a high rejecting ability and excellent contamination resistance, a separation membrane, and a process for producing the separation membrane are provided. The dope solution for membrane production contains a polyethersulfone and a solvent for thermally induced phase separation selected from the group consisting of 3-pyridinemethanol, 4-methyl-1,3-dioxolane-2-one, 4-benzylpiperidine, trimethyl phosphate, 1,3-dioxolane-2-one and mixtures thereof.

Separation membrane comprising polyethersulfone, process for producing thereof, and dope solution for membrane production

Growing community of inventors

Kobe, Japan

Hideto Matsuyama