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특허 상세정보

Nanofiltration of concentrated aqueous salt solutions

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-061/00   
미국특허분류(USC) 210/652 ; 210/651 ; 210/653
출원번호 US-0422935 (1995-04-17)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 45  인용 특허 : 1
초록

A nanofiltration process using a conventional nanofiltration membrane module under a positive applied pressure is used to selectively change the concentration of one solute, such as sodium chloride or sodium chlorate providing monovalent ions, from another solute such as sodium sulfate or sodium dichromate providing multivalent ions in high salt aqueous concentrations. The process is particularly useful in favourably lowering the concentration of silica and dichromate ions in chloral kali and chlorate brine containing solutions and favourably raising the...

대표
청구항

In a nanofiltration process for filtering an aqueous liquor comprising feeding a feed liquor to a nanofiltration membrane module under a positive applied pressure to provide a pass liquor and a permeate liquor and selectively decreasing the concentration of a first compound relative to the concentration of a second compound in said aqueous liquor wherein said first compound has a first feed concentration and said second compound has a second feed concentration, said process comprising feeding said aqueous liquor to said nanofiltration membrane module, co...

이 특허를 인용한 특허 피인용횟수: 45

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  27. Constantz, Brent; Monteiro, Paulo J. M.; Omelon, Sidney; Fernandez, Miguel; Farsad, Kasra; Geramita, Katharine; Yaccato, Karin. Methods and systems for utilizing waste sources of metal oxides. USP2016029260314.
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  31. Werner Bonrath DE; David Carl Burdick CH; Peter Schirg DE; Andreas Thum DE. Process for concentrating epigallocatechin gallate. USP2002056383392.
  32. Hassan, Ata M.. Process for desalination of saline water, especially water, having increased product yield and quality. USP2003016508936.
  33. Sivasankar, Narayanappa; Sullivan, Ian; Cole, Emily Barton; Teamey, Kyle; Keyshar, Kunttal. Process for making formic acid. USP2013108562811.
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  35. Davis,Thomas A.. Production of purified water and high value chemicals from salt water. USP2006087083730.
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  39. Cole, Emily Barton; Teamey, Kyle; Bocarsly, Andrew B.; Sivasankar, Narayanappa. Reduction of carbon dioxide to carboxylic acids, glycols, and carboxylates. USP2013118592633.
  40. Perry, Mordechai; Ginzburg, Vera; Ginzburg, Boris; Lapido, Polina. Solvent and acid stable membranes, methods of manufacture thereof and methods of use thereof inter alia for separating metal ions from liquid process streams. USP2018049943811.
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  43. Vuong, Diem Xuan. Two stage nanofiltration seawater desalination system. USP2013028366924.
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