Environmental hazard of oil shale combustion fly ash
| Autor: | Anne Kahru, Kaja Kasemets, Imbi Kurvet, Liina Kanarbik, Hedi Schvede, Angela Ivask, Mariliis Sihtmäe, Irina Blinova, Liidia Bityukova, Aleksandr Kakinen, Olesja Bondarenko, Villem Aruoja |
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| Přispěvatelé: | Blinova, Irina, Bityukova, Liidia, Kasemets, Kaja, Ivask, Angela, Kakinen, Aleksandr, Kurvet, Imbi, Bondarenko, Olesja, Kanarbik, Liina, Sihtmae, Mariliis, Aruoja, Villem, Schvede, Hedi, Kahru, Anne |
| Rok vydání: | 2012 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis Thermal power station Industrial Waste Combustion Coal Ash Arsenic Hazardous waste Chlorophyta Metals Heavy Environmental Chemistry Animals Soil Pollutants Leachate Fluidized bed combustion heavy metals Waste Management and Disposal soil pollution Waste management Bacteria toxicity Pollution Soil contamination fly ash Daphnia Fly ash Luminescent Measurements Environmental science oil shale combustion Oil shale Oils |
| Zdroj: | Journal of hazardous materials. |
| ISSN: | 1873-3336 |
| Popis: | The combined chemical and ecotoxicological characterization of oil shale combustion fly ash was performed.Ash was sampled from the most distant point of the ash-separation systems of the Balti and Eesti Thermal Power Plants in North-Eastern Estonia. The fly ash proved potentially hazardous for tested aquatic organisms and high alkalinity of the leachates (pH > 10) is apparently the key factor determiningits toxicity. The leachates were not genotoxic in the Ames assay. Also, the analysis showed that despite long-term intensive oil-shale combustion accompanied by considerable fly ash emissions has not led tosignificant soil contamination by hazardous trace elements in North-Eastern Estonia. Comparative study of the fly ash originating from the ‘new’ circulating fluidized bed (CFB) combustion technology and the‘old’ pulverized-fired (PF) one showed that CFB fly ash was less toxic than PF fly ash. Thus, complete transfer to the ‘new’ technology will reduce (i) atmospheric emission of hazardous trace elements and(ii) fly ash toxicity to aquatic organisms as compared with the ‘old’ technology Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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