Flash point of biodiesel/glycerol/alcohol mixtures for safe processing and storage |
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| Institution: | 1. “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021, Bucharest, Romania;2. Physikalisch-Technische Bundesanstalt (PTB), 100 Bundesallee, 38116, Braunschweig, Germany;1. College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, China;2. College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao, 266580, China;1. Department of Mechanical Engineering, Panimalar Engineering College, Chennai, India;2. Department of Mechanical Engineering, PSNA College of Engineering and Technology, Dindigul, India;3. Department of Mechanical Engineering, Jain (Deemed-to-be University), Bangalore, India;4. Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;5. Center for Emerging Contaminants Research, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;6. The International University of Management, Centre for Environmental Studies, Main Campus, Dorado Park Ext 1, Windhoek, Namibia;7. Destinies Biomass Energy and Farming Pty Ltd, P.O. Box 7387, Swakopmund, Namibia;8. Regent Business School, Durban, South Africa |
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| Abstract: | Mixtures of biodiesel, glycerol, and ethanol/methanol are commonly processed and stored in biodiesel production. In this work, non-ideal models are used to calculate the Flash Points (FPs) of binary and ternary mixtures, using data available from different feedstocks. Despite the fact that biodiesel is considered safer than common diesel fuels, results show a synergistic effect of biodiesel/methanol and biodiesel/ethanol mixtures, resulting in a reduction of the flash point of mixtures to values lower than the ones of pure compounds. Most soluble ternary mixtures were found flammable, the only exception being mixtures with a relatively lower alcohol content (45% mol. ethanol or 42% methanol) at temperature lower than 303 K. Accidental increase in temperature can cause domino effect, due to the higher solubility and the formation of new flammable ternary mixtures. |
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| Keywords: | Binary liquid mixtures Intermolecular forces Non-ideality Biodiesel Flash point Safety |
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