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US 2025/0051187 A1Published application
Hydrogel nanobeads for adsorption of pollutants from wastewater
AssigneeKing Saud University
InventorsJaved ALAM, Mansour Salah ALHOSHAN, Fekri Abdulraqeb Ahmed ALI, Arun Kumar SHUKLA
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Abstract
Hydrogel nanobeads include an ionically crosslinked sulfated polysaccharide biopolymer such as a carrageenan. In an embodiment, the hydrogel nanobeads comprise kappa carrageenan (κCg) and a metal ion crosslinking agent. In an embodiment, the metal ion crosslinking agent includes a metal ion selected from the group consisting of Zn2+, Fe2+, Fe3+, and Ti3+. The hydrogel nanobeads can be used for removal of pollutants in wastewater.
Claims4
A method for making crosslinked hydrogel nanobeads, comprising:
- providing an aqueous solution of a metal salt;
- providing an aqueous solution comprising a carrageenan;
- adding the aqueous solution of the metal salt to the aqueous solution comprising the carrageenan to obtain a combined aqueous solution;
- ionically crosslinking the carrageenan with metal ions from the metal salt in the combined solution;
- and
- obtaining the thus formed crosslinked hydrogel nanobeads.
3 more elements
Dependencies are inferred from the claim text.