Fabrication of highly efficient encapsulated SnO₂@alginate beads as regenerative nanosorbents for anionic dye pollutants removal from aqueous solution

Abstract

SnO2 nano-adsorbents encapsulated in alginate beads for the removal of anionic dyes.

Harnessing the Waste-to-Wealth Potential of Saraca asoca Plant-Derived Nanoparticles for the Sustainable Removal of Cationic Dyes through Regenerative Adsorption

“…To investigate the possibilities of post-treatment leaching of NPs into treated waters, SANPs were encased within SA beads at various concentrations (0.1, 0.2, and 0.3 g). SA, which is a biocompatible and biodegradable polymer, has been reported to successfully encase NPs in various other studies. , Encased SANPs have been investigated for the adsorption of a 10 μM MG aqueous solution. Figure S6 provides a pictorial representation of the beads developed for adsorption studies.…”

“…SA, which is a biocompatible and biodegradable polymer, has been reported to successfully encase NPs in various other studies. 16,56 Encased SANPs have been investigated for the adsorption of a 10 μM MG aqueous solution. Figure S6 provides a pictorial representation of the beads developed for adsorption studies.…”

“…13 Metal NPs, such as Ag, Au, and Fe, have been used for dye adsorption due to their unique surface properties. 14 oxide NPs, such as TiO 2 , 15 SnO 2 , 16 and ZnO, 15 have also been studied for dye adsorption due to their photocatalytic activity. However, the usage of green nanoadsorbents promotes the adoption of sustainable methods that will boost the green economy.…”

“…To address these concerns, adsorbents can be entrapped in sodium alginate (SA) beads. 16 Alginate is a natural polysaccharide that consists of repeating units of α-L-guluronic acid and β-D-mannuronic acid residues. It exhibits several properties, such as biocompatibility, biodegradability, negligible toxicity, chemical stability, low manufacturing cost, and chelation.…”

“…Another important aspect in wastewater treatment is the generation of secondary pollutants and separation of adsorbents in treated wastewater. To address these concerns, adsorbents can be entrapped in sodium alginate (SA) beads . Alginate is a natural polysaccharide that consists of repeating units of α- l -guluronic acid and β- d -mannuronic acid residues.…”