A highly porous solvent free PVDF/expanded graphite foam for oil/water separation

被引：58
作者：
Bentini, Ricardo [1 ]
Pola, Annalisa [2 ]
Rizzi, Laura Giorgia [2 ]
Athanassiou, Athanassia [1 ]
Fragouli, Despina [1 ]
机构：
[1] IIT, Smart Mat, Via Morego 30, I-16163 Genoa, GE, Italy
[2] Director Plus SpA, Parco Sci ComoNExT,Via Cavour 2, I-22074 Lomazzo, CO, Italy
来源：
CHEMICAL ENGINEERING JOURNAL | 2019年 / 372卷
关键词：
Expanded graphite; Polyvinylidene fluoride; Foams; Water remediation; Separation; OIL ABSORPTION; POLYURETHANE SPONGE; CARBON NANOTUBES; CRUDE-OIL; GRAPHENE; PERFORMANCE; EFFICIENT; WETTABILITY; ADSORPTION; DEPOSITION;
D O I：
10.1016/j.cej.2019.04.196
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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.
引用
收藏
页码：1174 / 1182
页数：9
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