Gelatin–Siloxane Hybrid Monoliths as Novel Heavy Metal Adsorbents
Source abstract
Abstract
Novel gelatin-siloxane hybrid monoliths for heavy metal removal were prepared in the chemical reaction of gelatin with organomodified silicone containing epoxy group. Obtained porous hybrid materials were applied for adsorption of Cu(II), Cd(II) and Pb(II) from aqueous solutions. In this paper, the influence of siloxane amount used for the modification of gelatin on adsorbent stability and heavy metal removal was examined. The effect of pH values of the immersion liquid, as well as the contact time, was studied. Morphology, compressive strength and water absorption of hybrid monoliths were investigated. Desorption tests were also performed. The results showed that the higher the amount of the siloxane, the better stability of the hybrid monoliths in aqueous solutions. The highest values of adsorption capacity were observed for Pb(II) ions. The experimental maximum adsorption capacity determined for hybrid monoliths was 3.75 mg/g for Pb(II), 1.76 mg/g for Cu(II) and 1.5 mg/g for Cd(II). The desorption of metal ions for hybrid monoliths stable in aqueous solutions reached 70%.
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Research context
OpenAlex topics: Adsorption and biosorption for pollutant removal · Recycling and Waste Management Techniques · Covalent Organic Framework Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Industrial Products and Packaging Quality, Poznan University of Economics and Business, 61-875 Poznan, Poland
Faculty of Chemistry, Adam Mickiewicz University, 61-614 Poznan, Poland
UAM Foundation, Poznan Science and Technology Park, 61-612 Poznan, Poland
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