Detoxification of synthetic and real groundwater contaminated with gasoline and diesel using Fenton, photo-Fenton, and biofilters

The treatment of groundwater contaminated with gasoline and diesel with H2O2, H2O2 + UV, Fenton, and photo-Fenton was studied. Fenton reactions provided the best results with 1mM of Fe2+ and 200mM of H2O2. High contaminant removals were achieved, in particular those of COD (Fenton: 69%, photo-Fenton...

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Bibliographic Details
Published in:Desalination and water treatment 2016-10, Vol.57 (50), p.23760-23769
Main Authors: Torres, Guillermo F., Ortega Méndez, J.A., Tinoco, Diana L., Marin, Enrique D., Araña, J., Herrera-Melián, J.A., Doña Rodrígez, J.M., Pérez Peña, J.
Format: Article
Language:English
Subjects:
AOPs
Biofilters
Contaminants
Contamination
Crude oil
Detoxification
Diesel
DRO
Gasoline
GRO
Groundwater
Groundwater pollution
Hydrocarbon polluted water
Hydrogen peroxide
Petroleum hydrocarbons
Phenols
Toxicity
Vibrio
Vibrio fischeri
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Summary:The treatment of groundwater contaminated with gasoline and diesel with H2O2, H2O2 + UV, Fenton, and photo-Fenton was studied. Fenton reactions provided the best results with 1mM of Fe2+ and 200mM of H2O2. High contaminant removals were achieved, in particular those of COD (Fenton: 69%, photo-Fenton: 97%), Diesel Range Organics (99.9% both reactions), Gasoline Range Organics (99.9% both reactions), Total Petroleum Hydrocarbons (Fenton: 83.8%, photo-Fenton: 92.5%), Total Phenols (Fenton: 67.3%, photo-Fenton: 90.4%), and toxicity toward Vibrio fischeri (100%, both reactions). The experiments have been performed with synthetic and real samples. The economic cost of the proposed method (14 USD/m3) is reduced by 60% with respect to that currently used in Ecuador.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2016.1141710