Title:
METHOD FOR REMOVING FLUORINE-CONTAINING COMPOUND FROM WASTE WATER
Document Type and Number:
WIPO Patent Application WO/2020/071505
Kind Code:
A1
Abstract:
The present invention provides a method for removing a fluorine-containing compound from a waste water, which is characterized by comprising an adsorption step wherein a waste water that contains two or more kinds of fluorine-containing compounds represented by general formula (1) or (2) and an adsorbent are brought into contact with each other, thereby having the two or more kinds of fluorine-containing compounds adsorbed on the adsorbent.
General formula (1): (H-(CF2)m-COO)pM1
(In the formula, m represents a number of 3-19; M1 represents H, a metal atom, NRb
4 (wherein Rb moieties may be the same or different, and each represents H or an organic group having 1-10 carbon atoms), an optionally substituted imidazolium, an optionally substituted pyridinium or an optionally substituted phosphonium; and p represents 1 or 2.)
General formula (2): (H-(CF2)n-SO3)qM2
(In the formula, n represents a number of 4-20; M2 represents H, a metal atom, NRb
4 (wherein Rb moieties are as defined above), an optionally substituted imidazolium, an optionally substituted pyridinium or an optionally substituted phosphonium; and q represents 1 or 2.)
Inventors:
TAIRA TAKAHIRO (JP)
HAYASHI TADAO (JP)
OKUI CHIAKI (JP)
HATAYAMA RYOU (JP)
KOIZUMI MICHINOBU (JP)
KATO TAKETO (JP)
TANAKA YUUJI (JP)
YOSHIDA HIROTOSHI (JP)
HAYASHI TADAO (JP)
OKUI CHIAKI (JP)
HATAYAMA RYOU (JP)
KOIZUMI MICHINOBU (JP)
KATO TAKETO (JP)
TANAKA YUUJI (JP)
YOSHIDA HIROTOSHI (JP)
Application Number:
PCT/JP2019/039190
Publication Date:
April 09, 2020
Filing Date:
October 03, 2019
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
C02F1/28; C02F1/42; C08F2/24; C07C53/21
Domestic Patent References:
| WO2009142080A1 | 2009-11-26 | |||
| WO2009128432A1 | 2009-10-22 | |||
| WO2010113720A1 | 2010-10-07 | |||
| WO2004050719A1 | 2004-06-17 | |||
| WO2002053258A1 | 2002-07-11 | |||
| WO2013054230A2 | 2013-04-18 | |||
| WO2013054230A2 | 2013-04-18 | |||
| WO2013054231A2 | 2013-04-18 |
Foreign References:
| JP2006181416A | 2006-07-13 | |||
| JP2013180259A | 2013-09-12 | |||
| JP2002059160A | 2002-02-26 | |||
| JP2009235070A | 2009-10-15 | |||
| JP2014039912A | 2014-03-06 | |||
| US9255164B2 | 2016-02-09 | |||
| US8563670B2 | 2013-10-22 | |||
| US9074025B2 | 2015-07-07 | |||
| JPS55120630A | 1980-09-17 | |||
| US6841616B2 | 2005-01-11 |
Other References:
R.S. M. HILL: "Silicone Surfactants", MARCEL DEKKER, INC.
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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