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Title: Ecotoxicological assessment of the potential impact on soil porewater, surface and groundwater from the use of organic wastes as soil amendments.
Authors: Alvarenga, Paula
Mourinha, C.
Farto, M.
Palma, Patrícia
Sengo, J.
Morais, M.-C.
Cunha-Queda, C.
Keywords: Ground water
Porewater
Surface water
Unclassified drug
Water
Bioassay
Compost
Ecotoxicology
Environmental risk
Groundwater
Risk assessment
Sludge
Soil amendment
Toxicity
Aliivibrio fischeri
Chemical composition
Controlled study
Daphnia magna
Germination
Organic waste
Perennial ryegrass
Risk assessment
Soil amendment
Thamnocephalus platyurus
Issue Date: Apr-2016
Publisher: Academic Press
Citation: Alvarenga, P., Mourinha, C., Farto, M., Palma, P., Sengo, J., Morais, M.-C., Cunha-Queda, C. (2016). Ecotoxicological assessment of the potential impact on soil porewater, surface and groundwater from the use of organic wastes as soil amendments. Ecotoxicology and Environmental Safety, 126, 102-110. https://dx.doi.org/10.1016/j.ecoenv.2015.12.019
Abstract: 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.
Peer reviewed: yes
URI: http://hdl.handle.net/123456789/4508
metadata.dc.identifier.doi: https://dx.doi.org/10.1016/j.ecoenv.2015.12.019
ISSN: 01476513
Appears in Collections:D-BIO - Artigos em revistas com peer review

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