Open AccessStudy of toxic impact of fly ash bearing construction materials on aquatic organisms
Author(s) -
Е. Н. Гончарова,
Mikhail Lebedev,
Marina Vasilenko,
N. I. Kozhukhova
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1089/1/012029
Subject(s) - daphnia magna , toxicity , chronic toxicity , daphnia , algae , aquatic toxicology , toxicology , environmental chemistry , fly ash , biology , pulp and paper industry , chemistry , botany , crustacean , ecology , organic chemistry , engineering
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.