Applications of graphene oxide in wastewater treatment
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2023-02-09 13:49
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BEHUNOVA, Dominika Marcin, GALLIOS, George, VACLAVIKOVA, Miroslava. Applications of graphene oxide in wastewater treatment. In: Achievements and perspectives of modern chemistry, 9-11 octombrie 2019, Chişinău. Chisinau, Republic of Moldova: Tipografia Academiei de Ştiinţe a Moldovei, 2019, p. 36. ISBN 978-9975-62-428-2.
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Achievements and perspectives of modern chemistry 2019
Conferința "International Conference "Achievements and perspectives of modern chemistry""
Chişinău, Moldova, 9-11 octombrie 2019

Applications of graphene oxide in wastewater treatment


Pag. 36-36

Behunova Dominika Marcin1, Gallios George2, Vaclavikova Miroslava1
 
1 Institute of Geotechnics SAS,
2 Aristotle University of Thessaloniki
 
 
Disponibil în IBN: 31 octombrie 2019


Rezumat

Water pollution is one of the most important worldwide environmental concern. More than 80% of sewage in developing countries is discharged untreated, polluting rivers, lakes and coastal areas. The clothing industry is the second largest polluter in the world, and alsotremendous consumer of water, dyes and various processing chemicals that are used during the textile processing.Graphene oxide-based composites (GO) are potentially applicable in environmental applications. Due their two-dimensional plane and one-atom thickness, GOoffer superior specific surface area for elimination of numerous substances, including heavy metal ions (Cd2+, Pd2+, Hg2+, Cr6+, As3+, etc.), synthetic or natural organic molecules (dyes), pharmaceuticals (antibiotics), agriculture molecules (pesticides), biomolecules (proteins, DNA, etc.) or mixtures (oil/petrol) [1]. Recent studies have reported electrochemical oxidation, photocatalysis, adsorption, and sonocatalytic as effective techniques for the treatment of assorted wastewaters. The objective of this study was to employ GO for the surface coating of the stainless steel (SS) using electrophoretic deposition technique. The new GO-SS electrode was used for electrochemical oxidation of commercial textile dye Reactive Black 5. Oxidants were obtained during the process directly at the electrode surface or indirectly from chemical compounds in the treated water [2]. The initial dye compounds were degraded to smaller and more polar compounds (aldehydes, carboxylic acids, inorganic compounds, carbon dioxide, water and minimal amount of secondary pollutants).The surface deposition of the stainless steel electrode by GO will provide more active surface area for adsorbing chargers and thus, will increase efficiency of electrochemical oxidation in wastewater treatment.The large specific surface area and abundant functional groups make GO a strong candidate for wastewater treatment.

Cuvinte-cheie
wastewater treatment, graphene oxide, electrophoretic deposition, electrochemical oxidation