US 11,857,945 B2
Composites for extraction of metal or contaminating chemical species
Wendy Lee Queen, Grimisuat (CH); and Daniel Teav Sun, Concord, CA (US)
Assigned to ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne (CH)
Filed by ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne (CH)
Filed on Jan. 18, 2022, as Appl. No. 17/648,219.
Application 17/648,219 is a division of application No. 16/639,839, abandoned, previously published as PCT/IB2018/056216, filed on Aug. 17, 2018.
Claims priority of provisional application 62/547,988, filed on Aug. 21, 2017.
Prior Publication US 2022/0168706 A1, Jun. 2, 2022
Int. Cl. B01J 20/26 (2006.01); B01D 53/02 (2006.01); B01D 53/64 (2006.01); B01D 53/81 (2006.01); B01J 20/22 (2006.01); C02F 1/28 (2023.01); C02F 1/70 (2023.01); B01D 53/62 (2006.01); C02F 101/20 (2006.01); C02F 101/22 (2006.01); C02F 103/08 (2006.01)
CPC B01J 20/265 (2013.01) [B01D 53/02 (2013.01); B01D 53/64 (2013.01); B01D 53/81 (2013.01); B01J 20/226 (2013.01); C02F 1/288 (2013.01); C02F 1/70 (2013.01); B01D 53/62 (2013.01); B01D 2253/204 (2013.01); B01D 2253/25 (2013.01); B01D 2257/106 (2013.01); B01D 2257/2025 (2013.01); B01D 2257/406 (2013.01); B01D 2257/504 (2013.01); B01D 2257/708 (2013.01); B01D 2258/06 (2013.01); C02F 1/285 (2013.01); C02F 2101/20 (2013.01); C02F 2101/22 (2013.01); C02F 2103/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for extraction of compounds comprising one or more metal or metalloid from an aerial or aqueous medium by selective binding, said method comprising:
providing an aerial or aqueous medium comprising compounds comprising one or more metal or metalloid;
exposing said aerial or aqueous medium to a composite, said composite comprising at least one porous template functionalized by at least one polymer, said polymer comprising one of the following chemical functions: primary, secondary or tertiary amine, amide, nitrile, pyridine, pyrrole, thiol, thiolether, thiophene, thiadiazole, alcohol/hydroxyl, phenol, catechol, pyragallol, carboxylic acid, aldehyde, ester, acyl, crown ether, phosphate, phosphoryl, epoxide, halogen, haloalkane;
during said exposure, allowing the compounds comprising one or more metal or metalloid to bind to the composite.