Ecotoxicological evaluation of waste water from nitrocellulose production
| Autor: | Flávio Teixeira da Silva, Teresa Cristina Brazil de Paiva, Elaine Nolasco Ribeiro |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Environmental Engineering
Industrial Waste Wastewater Biology complex mixtures chemistry.chemical_compound Explosive Agents Chlorophyta Animals Lignin Effluent Chronic toxicity Zebrafish Biological Oxygen Demand Analysis Pollutant Bacteria Waste management digestive oral and skin physiology Chemical oxygen demand Collodion General Medicine Pulp and paper industry Total dissolved solids Daphnia chemistry Nitrocellulose Brazil Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Journal of Environmental Science and Health, Part A. 48:197-204 |
| ISSN: | 1532-4117 1093-4529 |
| Popis: | The present study evaluated the toxic potential and physicochemical characteristics of waste water generated in nitrocellulose production, including effluents from delignification, bleaching, nitration and mixture (composed of these three effluents), from a plant in the Paraiba Valley, São Paulo, Brazil. The test organisms used for toxicity assays were Daphnia similis, Danio rerio, Escherichia coli, Pseudomonas putida and Pseudokircheneriella subcaptata. The results showed that the effluents analyzed present acute and chronic toxicity for the organisms tested. Nitration effluent was the least toxic, while delignification and bleaching effluents were the most toxic. The naturally occurring pollutants in wood fiber and cotton, like lignin, probably contributed to effluents toxicity, in addition to higher concentrations of total dissolved solids, which are in non-compliance with Brazilian legislation, conductivity, chemical oxygen demand and color. The discharge of nitrocellulose effluent into an aquatic environment should only occur after appropriate treatment, due to their toxic characteristics. |
| Databáze: | OpenAIRE |
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