New Eco-Friendly Xanthate-Based Flotation Agents
| Autor: | Milica Rančić, Dejan Gurešić, Ilija N. Cvijetić, Milutin M. Milosavljević, Goran Milentijević, Aleksandar D. Marinković, Aleksandra Bogdanović |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:QE351-399.2
0211 other engineering and technologies Salt (chemistry) flotation 02 engineering and technology levulinic acid DFT chemistry.chemical_compound Levulinic acid 021102 mining & metallurgy chemistry.chemical_classification Aqueous solution lcsh:Mineralogy Geology 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Environmentally friendly chemistry Chemical engineering Reagent Yield (chemistry) 5-hydroxymethyl-2-furanacrylic acid alkyl xanthate Xanthate 0210 nano-technology Hydroxymethylfurfural |
| Zdroj: | Minerals Volume 10 Issue 4 Minerals, Vol 10, Iss 350, p 350 (2020) Мinerals |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min10040350 |
| Popis: | An optimal laboratory two-step procedure was developed for sodium/potassium O-alkyl carbonodithioate (sodium/potassium alkyl xanthates) production in the form of aqueous solutions. Sodium isopropyl xanthate (Na-iPrX), as the most effective salt in a real ore flotation process, was also produced at an industrial level and introduced as a collector for copper ores. In order to reduce toxicity of the flotation process and improve sustainability by minimising environmental impacts, collector efficiency and selectivity in the flotation process were studied in relation to possible synergism of xanthates combined with the derived biomass and biodegradable green reagents levulinic acid, 5-hydroxymethyl-2-furanacrylic acid (HMFA), and condensation product of hydroxymethylfurfural and levulinic acid. Optimal content of 30% of HMFA in the collector pointed to the possibility of substitution of commercial xanthate collector without significantly affecting its efficiency/selectivity. The density functional theory (DFT) calculations provided insights into the interaction mechanism of Na-iPrX and HMFA with cooper. The benefits of the presented method highlight production simplicity, mild reaction conditions, high purity and yield of products, no by-products, and technological applicability on an industrial scale. |
| Databáze: | OpenAIRE |
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