Preparation of hierarchically porous carbon spheres derived from waste resins and its application in water purification
Source abstract
Abstract
In this research, ultrafine CeO2 nanoparticles modified porous carbon spheres were developed from waste resins and their efficiency in removing Cr(VI) from aqueous solutions was tested, which exhibited excellent adsorptive activities. Furthermore, various characterization methods were employed to prove that the CeO2 nanoparticles and raw carbons were closely bonded with one-step impregnation. Results showed that carbon spheres decorated with ultrafine CeO2 nanoparticles improves the removal efficiency by nearly six times compared with the raw carbons, reaching 90% for 100 mg/L Cr(VI). The kinetics and adsorption isotherm tests confirmed that the process was pseudo-second-order and controlled by both external transfer and intra-particle diffusion. Regeneration experiments verified long stability of the adsorbents, suggesting KSAC-CeO2 is a type of promising absorbent for the Cr(VI) removal from wastewater.
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Research context
OpenAlex topics: Adsorption and biosorption for pollutant removal · Nanomaterials for catalytic reactions · Carbon and Quantum Dots Applications
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References (29)
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