In situ modified nanocellulose/alginate hydrogel composite beads for purifying mining effluents.

ABSTRACT: Biobased adsorbents and membranes offer advantages related to resource efficiency, safety, and fast kinetics but have challenges related to their reusability and water flux. Nanocellulose/alginate composite hydrogel beads were successfully prepared with a diameter of about 3-4 mm and porosity as high as 99%. The beads were further modified with in situ TEMPO-mediated oxidation to functionalize the hydroxyl groups of cellulose and facilitate the removal of cationic pollutants from aqueous samples at low pressure, driven by electrostatic interactions. The increased number of carboxyl groups in the bead matrix improved the removal efficiency of the adsorbent without compromising the water throughput rate; being as high as 17 000 L h^-1 m^-2 bar^-1. The abs

SUBMITTER: Georgouvelas D 

PROVIDER: S-EPMC10597566 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature