Ecotoxicological assessment of the potential impact on soil porewater, surface and groundwater from the use of organic wastes as soil amendments
| Autor: | Joana Sengo, Cristina Cunha-Queda, Paula Alvarenga, Patrícia Palma, Clarisse Mourinha, Márcia Farto, Marie-Christine Morais |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Thamnocephalus platyurus
Unclassified drug Health Toxicology and Mutagenesis Daphnia magna Chemical composition Wastewater 010501 environmental sciences Ecotoxicology Sludge 01 natural sciences Porewater Soil 0302 clinical medicine Water Pollution Chemical Soil Pollutants 030212 general & internal medicine Organic Chemicals Sewage sludge Groundwater Risk assessment biology Compost food and beverages Surface water General Medicine Lettuce Aliivibrio fischeri Pollution Environmental chemistry Bioassay Biological Assay Perennial ryegrass Soil amendment Germination engineering.material Eluates 03 medical and health sciences Lolium Animals Organic waste 0105 earth and related environmental sciences Waste Products Toxicity Portugal Acute aquatic bioassay Public Health Environmental and Occupational Health Water Biodegradable waste biology.organism_classification Ecototoxicity Environmental risk Soil conditioner Ground water Daphnia engineering Environmental science Controlled study Water Pollutants Chemical |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) |
| Popis: | This study aimed to assess the potential impact on soil porewater, surface and groundwater from the beneficial application of organic wastes to soil, using their eluates and acute bioassays with aquatic organisms and plants: luminescence inhibition of Vibrio fischeri (15 and 30 min), Daphnia magna immobilization (48 h), Thamnocephalus platyurus survival (24 h), and seed germination of Lolium perenne (7 d) and Lactuca sativa (5 d). Some organic wastes' eluates promoted high toxic responses, but that toxicity could not be predicted by their chemical characterization, which is compulsory by regulatory documents. In fact, when organisms were exposed to the water-extractable chemical compounds of the organic wastes, the toxic responses were more connected to the degree of stabilization of the organic wastes, or to the treatment used to achieve that stabilization, than to their contaminant load. That is why the environmental risk assessment of the use of organic wastes as soil amendments should integrate bioassays with eluates, in order to correctly evaluate the effects of the most bioavailable fraction of all the chemical compounds, which can be difficult to predict from the characterization required in regulatory documents. According to our results, some rapid and standardized acute bioassays can be suggested to integrate a Tier 1 ecotoxicological evaluation of organic wastes with potential to be land applied, namely luminescence inhibition of V. fischeri, D. magna immobilization, and the germination of L. perenne and L. sativa. |
| Databáze: | OpenAIRE |
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