Study of toxic impact of fly ash bearing construction materials on aquatic organisms
| Autor: | E N Goncharova, M S Lebedev, N I Kozhukhova, M I Vasilenko |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Materials Science and Engineering. 1089:012029 |
| ISSN: | 1757-899X 1757-8981 |
| DOI: | 10.1088/1757-899x/1089/1/012029 |
| Popis: | The article studies the toxicological characteristics and behavior of geopolymer samples GB-1 and GB-2 based on fly ash from thermal power plants. Cement paste also was used to provide comprehensive comparative analysis. Aerated tap water was used as a reference medium. The toxicity of the studied materials was determined by applying standard biotesting methods using such aquatic organisms as Scenedesmus quadricauda microalgae and cladocerans Daphnia magna. Based on the obtained experimental and analytical data, it was found that the most favorable environment for algae is sample GB-2. Different behavior is observed in crustaceans. In this case, the most favorable medium for acute and chronic toxicity is a cement paste. The highest toxic effect is observed in the GB-1 sample medium vs. the others studied samples for all considered parameters of toxicity, including chronic one: the decrease in the concentration of algae is 30-35 %; the death of daphnia is 50-80 %. Chronic toxicity, which was determined by the value of the total fertility of daphnia in GB-1 medium, is 5-18 times less compared to the Reference sample. |
| Databáze: | OpenAIRE |
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