Synthesis and application of various metal oxide–/biomaterial–coated carbonaceous nanomaterials derived from waste biomass for removal of Cr+6 present in solution
| Autor: | Vijoyeta Chakraborty, Pankaj Kumar Roy, Papita Das |
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| Rok vydání: | 2021 |
| Předmět: |
Cerium oxide
Materials science Renewable Energy Sustainability and the Environment Graphene 020209 energy Oxide 02 engineering and technology 010501 environmental sciences 01 natural sciences Nanomaterials law.invention chemistry.chemical_compound Adsorption Chemical engineering chemistry law Biochar 0202 electrical engineering electronic engineering information engineering medicine Hexavalent chromium 0105 earth and related environmental sciences Activated carbon medicine.drug |
| Zdroj: | Biomass Conversion and Biorefinery. 13:2099-2112 |
| ISSN: | 2190-6823 2190-6815 |
| DOI: | 10.1007/s13399-020-01224-9 |
| Popis: | In this study, seven different nanocoated carbonaceous materials was synthesized using hydrothermal method. Graphene oxide and activated carbon from biochar of sawdust were used as matrix materials, and the coating materials used were mainly nanoparticles, lanthanum oxide, cerium oxide, zirconium oxide, and cellulose. The adsorption capacities of these composites were analyzed by estimating the removal capacity for the hexavalent chromium present in the solution. Parameters like adsorbent dose, pH, and metal ion concentration were studied. The composites prepared by coating activated carbon with functionalized graphene oxide and zirconium oxide had shown higher removal capacity more than 160 mg/g in acidic pH, i.e., pH 4 with 1 mg/ml adsorbent dose and up to 150 mg/l of hexavalent chromium concentration. The removal capacity was second for the activated carbon coated with graphene oxide and third highest value obtained from the composite prepared by coating activated carbon synthesized from biochar with zirconium oxide. The removal capacity obtained was directly related to the surface area and the presence of active surface functional group. The study aims to provide a better nanocoated composite for removal of hexavalent chromium present in the experimental solution. |
| Databáze: | OpenAIRE |
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