US 12,214,299 B2
Composition, system and method for removal of detergents from aqueous solutions
Hyman Chaim Birnboim, Ottawa (CA); Rajeev Mani Nepal, Burnaby (CA); Bitapi Ray, Stittsville (CA); Jessica Lynne Gage, Kanata (CA); and Christopher Gordon Askew, Ottawa (CA)
Assigned to DNA GENOTEK INC., Kanata (CA)
Appl. No. 16/305,191
Filed by DNA GENOTEK INC., Kanata (CA)
PCT Filed May 30, 2017, PCT No. PCT/CA2017/050655
§ 371(c)(1), (2) Date Nov. 28, 2018,
PCT Pub. No. WO2017/205971, PCT Pub. Date Dec. 7, 2017.
Claims priority of provisional application 62/343,293, filed on May 31, 2016.
Prior Publication US 2020/0316493 A1, Oct. 8, 2020
Int. Cl. B01D 17/04 (2006.01); B01D 17/02 (2006.01); C02F 1/38 (2023.01); C02F 1/40 (2023.01); C07C 303/44 (2006.01); C12Q 1/6806 (2018.01); C02F 101/30 (2006.01)
CPC B01D 17/047 (2013.01) [B01D 17/0217 (2013.01); C02F 1/385 (2013.01); C02F 1/40 (2013.01); C07C 303/44 (2013.01); C12Q 1/6806 (2013.01); C02F 2101/301 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of removing a detergent from an aqueous solution comprising said detergent, said method comprising the step of mixing the aqueous solution with:
a. a salt;
b. a water immiscible alcohol of Formula I
R1—OH  (Formula I)
where R1 is an optionally substituted, linear, branched or cyclic C4-C12 alkyl; and
c. a water immiscible halocarbon, wherein said halocarbon is miscible with said alcohol of Formula I,
to form a two-phase mixture comprising an aqueous phase and a non-aqueous phase, wherein more than 99% wt/vol of the detergent is in the non-aqueous phase; and
wherein the halocarbon is present at a concentration sufficient to increase the density of the non-aqueous phase to greater than the density of the aqueous phase, wherein the concentration of halocarbon in the alcohol is up to 80% (v/v),
wherein the ratio of the total volume of the salt plus the alcohol plus the halocarbon to the volume of the aqueous solution comprising the detergent is from 1:9 to 2:1.