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Open AccessArticle

Evaluation of TiO2 and SnO Supported on Graphene Oxide (TiO2-GO and SnO-GO) Photocatalysts for Treatment of Hospital Wastewater

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Escuela de Ingeniería Química, Universidad del Valle, Cali 760032, Colombia
2
Department of Chemistry, Universidad del Valle, Cali 760032, Colombia
*
Author to whom correspondence should be addressed.
Water 2020, 12(5), 1438; https://doi.org/10.3390/w12051438
Received: 7 February 2020 / Revised: 5 April 2020 / Accepted: 7 April 2020 / Published: 19 May 2020
The effectiveness of two photocatalysts, TiO2 and SnO, supported on graphene oxide (TiO2-GO and SnO-GO) on the removal of organic matter from hospital wastewater effluent was evaluated at laboratory scale. The results of the experimental design allow us to conclude that variables such as catalyst type and catalyst concentration have a significant effect on the organic matter removal efficiency of the photocatalytic process. The highest levels of removal efficiencies—for chemical oxygen demand, 85%, for phenols, 80%, and for dissolved organic carbon, 94%—were achieved using a TiO2-GO catalyst with a concentration in the wastewater of 1.5 g/L. View Full-Text
Keywords: heterogeneous photocatalysis; titanium dioxide; tin oxide; graphene oxide; chemical oxygen demand heterogeneous photocatalysis; titanium dioxide; tin oxide; graphene oxide; chemical oxygen demand
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MDPI and ACS Style

Rosero Parra, L.; Guerrero Pantoja, L.; Mena, N.L.; Machuca-Martínez, F.; Urresta, J. Evaluation of TiO2 and SnO Supported on Graphene Oxide (TiO2-GO and SnO-GO) Photocatalysts for Treatment of Hospital Wastewater. Water 2020, 12, 1438.

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