Toxicity identification and evaluation (TIE) of a petroleum refinery wastewater
| Autor: | Juacyara Carbonelli Campos, Sarah Dario Alves Daflon, Igor Lopes Guerra, Ana Cláudia Cerqueira, Clarice Maria Rispoli Botta, Marcia Vieira Reynier |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
0211 other engineering and technologies 02 engineering and technology Wastewater 010501 environmental sciences 01 natural sciences Aquatic toxicology Industrial wastewater treatment chemistry.chemical_compound Metals Heavy Animals Polycyclic Aromatic Hydrocarbons Chronic toxicity 0105 earth and related environmental sciences 021110 strategic defence & security studies biology Ceriodaphnia dubia General Medicine Cladocera biology.organism_classification Petroleum chemistry Environmental chemistry Toxicity Pyrene Brazil Water Pollutants Chemical Toxicant |
| Zdroj: | Journal of Environmental Science and Health, Part A. :1-7 |
| ISSN: | 1532-4117 1093-4529 |
| DOI: | 10.1080/10934529.2017.1312186 |
| Popis: | Petroleum refineries generate large amounts of wastewaters, which can have acute/chronic toxicity toward aquatic organisms. Previous studies have shown that many contaminants can be responsible for this toxicity, among them ammonia, sulfide, cyanide, phenols and hydrocarbons. In the study reported herein, the cause of the chronic toxicity of a biotreated petroleum refinery wastewater was investigated by applying the TIE methodology using the microcrustacean Ceriodaphnia dubia. Five samples were analyzed, and the results suggest that copper is the primary toxicant, showing a strong correlation with wastewater toxicity in Phase III. Other metal contaminants, such as zinc and nickel, are present in the samples at toxic concentrations and these may also contribute (to a lesser degree) toward the toxicity. In the case of one sample, the toxicity was attributed to polycyclic aromatic hydrocarbons (PAHs), possibly benzo(a)pyrene, which was present at a concentration toxic to C. dubia. Although the values for the physicochemical parameters of the samples were below Brazilian environmental regulation limits (CONAMA 430), this was not sufficient to prevent chronic toxicity toward aquatic life, indicating that these limits are relatively high. |
| Databáze: | OpenAIRE |
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