Graphene Oxide Membranes for Trace Hydrocarbon Contaminant Removal from Aqueous Solution

Nanomaterials

卷:10

Stefano Carminati¹  Seifeddine Kara²  Elena Tresso²  Monica Periolatto²  Marco Fontana²  Andrea Lamberti²  Alessandro Pedico²  Stefano Bianco²  CandidoFabrizio Pirri² 

[1] Eni S.p.A., Piazza Ezio Vanoni, 1, 20097 San Donato Milanese, Italy;

[2] Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia (DISAT), Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;

关键词: graphene oxide;    membranes;    oil and gas;    BTX;    rejection;    trace contaminants;   

DOI  :  10.3390/nano10112242

来源: DOAJ

【 摘 要 】

The aim of this paper is to shed light on the application of graphene oxide (GO) membranes for the selective removal of benzene, toluene, and xylene (BTX) from wastewater. These molecules are present in traces in the water produced from oil and gas plants and are treated now with complex filtration systems. GO membranes are obtained by a simple, fast, and scalable method. The focus of this work is to prove the possibility of employing GO membranes for the filtration of organic contaminants present in traces in oil and gas wastewater, which has never been reported. The stability of GO membranes is analyzed in water solutions with different pH and salinity. Details of the membrane preparation are provided, resulting in a crucial step to achieve a good filtration performance. Material characterization techniques such as electron microscopy, x-ray diffraction, and infrared spectroscopy are employed to study the physical and chemical structure of GO membranes, while gas chromatography, UV-visible spectroscopy, and gravimetric techniques allow the quantification of their filtration performance. An impressive rejection of about 90% was achieved for 1 ppm of toluene and other pollutants in water, demonstrating the excellent performance of GO membranes in the oil and gas field.

【 授权许可】

Unknown