Terrestrial ecotoxicity of canola and tallow-biodiesel blended with ulta-low sulphur diesel (PL)

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EditorSearch for: Harkness, J.; Search for: van Aggelen, G.; Search for: Kennedy, C. J.; Search for: Jarvis, R. Allen; Search for: Burridge, L. E.
Proceedings titleProceedings of the 39th Annual Aquatic Toxicity Workshop : September 30-October 3, 2012, Sun Peaks, British Columbia
Series titleCanadian Technical Reports of Fisheries and Aquatic Sciences; Volume 3030
Conference39th Aquatic Toxicity Workshop (ATW 2012), September 30-October 3, 2012, Sun Peaks, British Columbia
Pages16–; # of pages: 1
AbstractBiodiesel 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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AffiliationNational Research Council Canada; Aquatic and Crop Resource Development
Peer reviewedYes
NRC number50508
NPARC number21268211
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Record identifier3c71d844-61e3-41ac-b4e7-0c013c0d3ad7
Record created2013-06-05
Record modified2016-05-09
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