| Téléchargement | - Voir le manuscrit accepté : Terrestrial ecotoxicity of canola and tallow-biodiesel blended with ulta-low sulphur diesel (PL) (PDF, 506 Kio)
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| Auteur | Rechercher : Rocheleau, S.1; Rechercher : Sarrazin, M.1; Rechercher : Dodard, S.1; Rechercher : Beaulieu, C.1; Rechercher : Hawari, J.1; Rechercher : Hollebone, B.; Rechercher : Sunahara, G.1 |
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| Affiliation | - Conseil national de recherches du Canada. Développement des cultures et des ressources aquatiques
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| Format | Texte, Article |
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| Conférence | 39th Aquatic Toxicity Workshop (ATW 2012), September 30-October 3, 2012, Sun Peaks, British Columbia |
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| Résumé | Biodiesel is becoming an interesting alternative fuel source considering the continuously diminishing petroleum resources. Biodiesel can be produced from either plant or animal feedstocks, and its storage, transport, and use may pose potential environmental problems to soil and groundwater. Aquatic toxicities of diesel and biodiesel have been extensively studied, but little is still known about their toxicities and environmental fate in soil. The present study evaluates the potential environmental impacts of biodiesel and petroleum ultra-low-sulphur based diesel (ULSD) blended with biodiesel in soil using direct contact toxicity assays. Canola-source biodiesel (B100) and a tallow-source biodiesel (B100) alone and as 20% (volume/volume) blends with ULSD (B20) were compared to neat ULSD. Selected standard terrestrial toxicity tests included ryegrass Lolium perenne seedling emergence and growth, earthworm Eisenia fetida survival, and soil microbial dehydrogenase activity (DHA). Soil loading was quantified using extractable n-alkanes (C10 to C34 hydrocarbons). Results indicate that both B20 biodiesel blends had less deleterious effects to ryegrass growth and earthworm survival than the petroleum ULSD, whereas both B100 biodiesel samples had no deleterious effect on ryegrass growth or earthworm survival at concentrations up to 6310 and 6613 mg n-alkanes·kg⁻¹, respectively. Petroleum ULSD and B20 canola biodiesel inhibited the DHA microbial activity, whereas tallow biodiesel (B20 and B100) and B100 canola biodiesel stimulated the DHA activity. This study provides useful toxicological data for the evaluation of potential adverse impact and risk assessment of biodiesel in the environment. |
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| Date de publication | 2013 |
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| Série | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 50508 |
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| Numéro NPARC | 21268211 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 3c71d844-61e3-41ac-b4e7-0c013c0d3ad7 |
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| Enregistrement créé | 2013-06-05 |
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| Enregistrement modifié | 2020-06-04 |
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