US 12,330,961 B2
Self-regenerable fibrous adsorbent for heavy metal adsorption
Jae Woo Choi, Seoul (KR); Kyung-Won Jung, Seoul (KR); and Youngkyun Jung, Seoul (KR)
Assigned to KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul (KR)
Filed by KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul (KR)
Filed on Dec. 12, 2022, as Appl. No. 18/064,736.
Claims priority of application No. 10-2022-0048686 (KR), filed on Apr. 20, 2022.
Prior Publication US 2023/0339782 A1, Oct. 26, 2023
Int. Cl. C02F 1/28 (2023.01); C02F 1/62 (2023.01); C02F 101/20 (2006.01)
CPC C02F 1/285 (2013.01) [C02F 1/62 (2013.01); C02F 2101/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A self-regenerable fibrous adsorbent for heavy metal adsorption, which is a fibrous polymer consisting of a first polymer material and a second polymer material, wherein
heavy metal-adsorbing functional groups are immobilized on the surface of the first polymer material and heavy metal crystal-desorbing functional groups are immobilized on the surface of the second polymer material, and
heavy metal ions in water are adsorbed by the heavy metal-adsorbing functional groups of the first polymer material and grow into crystals, and the heavy metal crystals are desorbed by the heavy metal crystal-desorbing functional groups of the second polymer material when they grow to a predetermined size or larger.