Obtaining granular adsorbents based on biopolymers and clay minerals

• DOI: 10.20535/2617-9741.3.2024.312425
• Publication Date: 2024-09-30T08:21:49Z
• Authors: Olha Fomenko; Oleksandr Makovet...; Antonina Bondarieva; Viktoriia Tobilko; Junjie Yu

The development of granular, low-cost adsorbents represents an important environmental challenge. Natural clay minerals show promise in this area, as they exhibit adsorption capacity a range pollutants. Nevertheless, the high dispersion aluminosilicates limits their widespread use. To enhance processability these materials, are subjected to granulation using natural biopolymers, such sodium alginates. Concurrently, granules can be increased by application modifiers surface silicates, particular iron oxyhydroxides, which efficacious removal heavy metals from water. aim study is obtain granular based on saponite and biopolymer that stable water capable removing metal ions environment. rheological behavior suspensions was investigated order ascertain optimal conditions for high-quality granulation. phase composition modified determined X-ray diffraction analysis. structural-sorption characteristics samples were method low-temperature nitrogen adsorption-desorption, thermal properties studied differential gravimetric analyses. present demonstrates viscosity alginate-based with varying mass ratios dependent mineral content mixture, at fixed polymer quantity. determined, it established stability aqueous medium influenced quantity alginate incorporated into mixture. It specific area sample decreases during process. This value 109 m2/g, less than 173 m2/g observed powdered adsorbent. processes transformations occurring materials heating studied. As result alginate, found systems thixotropic. also discovered significantly affected amount added suspension. potential applications obtained purification ion contamination shown.