Yearly Archives: 2021

‘Removal Of Sb(III) By 3D-reduced Graphene Oxide/sodium Alginate Double-network Composites From An Aqueous Batch And Fixed-bed System | Scientific Reports – Nature.com’

Nature.com Nov 17, 2021

We created 3D-reduced graphene oxidesodium alginate double network GAD beads to address the problem of local water pollution by antimony. GAD is a novel material with the high specific surface area of graphene and biosecurity of sodium alginate. Due to the introduction of graphene the thermal stability and specific surface area of GAD are enhanced as shown from the FTIR TGA BET Raman and XRD characterizations. The influence of different environmental variables-such as the pH dosage temperature contact time and sodium chloride concentration on the SbIII sorption with GAD-was investigated. The adsorption results fit well with both the pseudo-second order R28201gt82010.99 and Freundlich R28201gt82010.99 isotherm models. The temperature rise has a negative influence on the adsorption. The Langmuir adsorption capacity is 7.67160mgg which is higher than many adsorbents. The GAD results from the fixed-bed adsorption experiment were a good fit with the Thomas model R28201gt82010.99. In addition GAD appears to be a renewable and ideal adsorbent for the treatment of antimony pollution in aqueous systems.