1 research outputs found
Investigating production parameters and impacts of potential emissions from soybean biodiesel stored under different conditions
Biodiesel production parameters and the impact analysis of the potential emissions from both soybean biodiesel and washing water stored
in three different environmental conditions were investigated. The effects of the reaction temperature, methanol/oil mole ratio and catalyst
concentration on biodiesel yield were considered. And the results showed optimum biodiesel yield of 99% obtained at 54°C, 7 methanol/oil
mole ratio and 0.4 wt/wt % catalyst concentration. The potential emissions from both the biodiesel produced and washing water stored (for
six weeks) in refrigerator (≤ 10°C), vacuum (50 kPa) and direct exposure to atmosphere were identified and quantified. Impact analysis of
the emissions involved their categorization into: terrestrial acidification, freshwater eutrophication, human toxicity, terrestrial ecotoxicity, climate
change and freshwater ecotoxicity. Freshwater ecotoxicity category had the most pronounced negative impact of the potential emissions with
5.237710-2 kg 1,4-DB eq. emissions in Atmosphere, 4.702610-2 kg 1,4-DB eq. emissions in Refrigerator and 3.966110-2 kg 1,4-DB eq. emissions
in Vacuum. Climate change had the least effect of the emissions with 6.21410-6 kg CO2 eq. in Atmosphere, 3.9310-6 kg CO2 eq. in Refrigerator
and 1.6710-6 kg CO2 eq. in Vacuum. The study showed that the order of preference of the storage environments of biodiesel is vacuum environment,
refrigerated condition and exposure to atmosphere