Toxicity of the effluent from an anaerobic bioreactor treating cereal residues on Lactuca sativa
| Autor: | Patricia Alina Bres, María Eugenia Beily, Brian Jonathan Young, Nicolás Iván Riera, Alicia Estela Ronco, Diana C. Crespo |
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| Rok vydání: | 2012 |
| Předmět: |
Treatment pond
Health Toxicology and Mutagenesis Germination Lactuca Waste Disposal Fluid complex mixtures Bioreactors Botany Bioreactor Food Industry Water Pollutants Anaerobiosis Ponds Effluent Biological Oxygen Demand Analysis biology Chemistry Public Health Environmental and Occupational Health General Medicine Lettuce Pulp and paper industry biology.organism_classification Pollution Oxygen Anaerobic digestion Phytotoxicity Edible Grain Anaerobic exercise Waste disposal |
| Zdroj: | Ecotoxicology and Environmental Safety. 76:182-186 |
| ISSN: | 0147-6513 |
| DOI: | 10.1016/j.ecoenv.2011.09.019 |
| Popis: | Effluents generated during the process of anaerobic digestion should be treated before their disposal into the environment. The aim of this study was evaluating the effectiveness of the effluent treatment system from an anaerobic bioreactor, assessing the toxicity reduction with the Lactuca sativa seed germination and root elongation inhibition test. Three sampling points were selected along the effluent treatment system: inflow into the first treatment pond, outflow from the third pond and recirculated flow to the bioreactor. Effluent dilutions tested for each sampling point were 25% and 50% (v/v), undiluted sample and controls. The pH, conductivity, temperature, dissolved oxygen, BOD₅ and COD were measured. The decrease in the organic and inorganic loads was correlated with a reduction in the phytotoxicity. The use of the seed toxicity test allows evaluating the quality and effectiveness of the studied effluent treatment system. |
| Databáze: | OpenAIRE |
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