A highly porous solvent free PVDF/expanded graphite foam for oil/water separation
| Autor: | Ricardo Bentini, Annalisa Pola, Laura Giorgia Rizzi, Athanassia Athanassiou, Despina Fragouli |
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| Rok vydání: | 2019 |
| Předmět: |
Solvent free
Fabrication Materials science General Chemical Engineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Solvent chemistry.chemical_compound chemistry Chemical engineering Highly porous Environmental Chemistry Oil water Graphite 0210 nano-technology Porosity Fluoride |
| Zdroj: | Chemical Engineering Journal. 372:1174-1182 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2019.04.196 |
| Popis: | The environmental impact caused by natural and industrial water containing oils and hydrocarbons or solvents is nowadays of great concern, highlighting the need to improve the cost-efficiency and sustainability of already existing materials, or to develop new-ones with better potential. Here, we present the fabrication of a highly porous foam composed of poly(vinylidene fluoride) (PVDF) and expanded graphite (EGr) following a solvent- and template-free process. The obtained PVDF:EGr foam has a porosity of c.a. 90%, and is highly selective towards oily contaminants. The mean oil absorption capacity of PVDF:EGr foam is 12 g/g. This performance is preserved even under corrosive conditions and for various absorption-desorption cycles, demonstrating the effectiveness of the developed system for different types of wastewaters. Therefore, the developed PVDF:EGr reusable foams are promising candidates for the treatment of different types of contaminated waters, while their template and solvent-free fabrication method is ideal for a large-scale foams production. |
| Databáze: | OpenAIRE |
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