Evaluation of e-beam irradiation effects on the toxicity of slaughterhouse wastewaters

Slaughterhouse industry produces large volumes of polluted wastewater, which cause negative impacts on the environment. The objective of this study was to assess the effect of electron-beam irradiation on the ecotoxicity of slaughterhouse effluents with absorbed doses up to 35 kGy. Two acute toxicit...

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Bibliographic Details
Published in:Environmental technology 2018-04, Vol.39 (7), p.873-877
Main Authors: Madureira, Joana, Melo, Rita, Pimenta, Andreia I., Verde, Sandra Cabo, Borrely, Sueli I.
Format: Article
Language:English
Subjects:
Abattoirs
Acute toxicity
Bacteria
Contamination
Effluents
Electron beams
Electron irradiation
electron-beam irradiation
Environmental impact
Freshwater crustaceans
Ionizing radiation
Irradiation
Organic carbon
Organisms
Slaughterhouse
Total organic carbon
Toxicity
Wastewater
Wastewater pollution
Wastewater treatment
Waterborne diseases
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Summary:Slaughterhouse industry produces large volumes of polluted wastewater, which cause negative impacts on the environment. The objective of this study was to assess the effect of electron-beam irradiation on the ecotoxicity of slaughterhouse effluents with absorbed doses up to 35 kGy. Two acute toxicity assays were applied to evaluate the efficiency of irradiation onto toxicity of wastewater. The exposed living-organisms were a luminescent bacteria Vibrio fischeri, and a freshwater microcrustacean Daphnia similis. Also, the total organic carbon was analysed in order to determine any possible organic carbon removal after irradiation. The ecotoxicological results evidenced that both living-organisms were suitable for the measurements. Therefore, the results demonstrated the toxicity of the effluent and its similarity for both organisms as well as the potential of radiation to reduce these effects. The 35 kGy dose was very effective for reducing toxic effects of slaughterhouse wastewater for daphnids suggesting that ionizing radiation could be used as a tool for removing toxic charge of such effluents. The type of contamination presented by the effluent justify the needs for alternatives of treatment.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593330.2017.1313887