公开(公告)号：US20230339782A1

公开(公告)日：2023-10-26

申请号：US18064736

申请日：2022-12-12

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jae Woo CHOI ,  Kyung-Won JUNG ,  Youngkyun JUNG

IPC: C02F1/28 ,  C02F1/62

CPC classification number: C02F1/285 ,  C02F1/62 ,  C02F2101/20

Abstract: The present disclosure relates to a self-regenerable fibrous adsorbent for heavy metal adsorption, which is capable of adsorbing heavy metal ions in water, growing them into crystals and desorbing the grown heavy metal crystals on its own, and a method for preparing the same. The self-regenerable fibrous adsorbent for heavy metal adsorption according to the present disclosure is a fibrous polymer consisting of PAN and PMMA, wherein amine functional groups are immobilized on the surface of the PAN and hydroxyl groups (—OH) are immobilized on the surface of the PMMA.

公开(公告)号：US20250153136A1

公开(公告)日：2025-05-15

申请号：US18615762

申请日：2024-03-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jae Woo CHOI ,  Youngkyun JUNG ,  Kyung-Won JUNG ,  Yun LEE ,  Sujin YOON

IPC: B01J20/22 ,  B01D15/08 ,  B01J20/28

Abstract: The present invention relates to a metal-organic framework-polymer fiber-based adsorbent having a core-shell structure and a method for preparing the adsorbent, and a method for recovering a rare earth metal using the same, which result in having easy recovery of the adsorbent together with excellent characteristics of a maximum adsorption amount and an adsorption rate for the rare earth metal. The metal-organic framework-polymer fiber-based adsorbent having the core-shell structure according to the present invention is characterized in that the metal-organic framework is provided on a surface of a sodium polyacrylate (NaPA) fiber.

公开(公告)号：US20240174535A1

公开(公告)日：2024-05-30

申请号：US18331396

申请日：2023-06-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jae Woo CHOI ,  Kyung-Won JUNG ,  Jee Hye BYUN ,  Youngkyun JUNG ,  Boram YANG

IPC: C02F1/52 ,  C01C3/12 ,  C02F1/30

CPC classification number: C02F1/5236 ,  C01C3/12 ,  C02F1/30 ,  C02F2101/38

Abstract: The present disclosure relates to a Prussian blue-based coagulant and a microplastic coagulation method using the same, which may effectively coagulate microplastics having a size of less than 20 μm or nanoplastics and implement an environmentally harmless coagulation process, and the Prussian blue-based coagulant according to the present disclosure refers to Prussian blue being used as a coagulant for microplastics present in a water-system environment.