Biofuel production from spent coffee grounds via lipase catalysis |
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Authors: | Sanjib Kumar Karmee Wian Swanepoel Sanette Marx |
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Affiliation: | School of Chemical and Minerals Engineering, North-West University, Potchefstroom, South Africa |
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Abstract: | Lipases namely Mucor miehei, Pseudomonas cepacia, Rhizopus delemar, Geotrichum candidum, Candida rugosa, Porcine pancreas-II, Pseudomonas fluorescence, and Candida antarctica lipase-B (Novozyme-435) were employed for biodiesel synthesis from spent coffee oil. Around 96% oil-to-biodiesel conversion was obtained using Novozyme-435 as a catalyst at 1:5 oil-to-methanol molar ratio and 40ºC. Total spent coffee grounds generated at the North-West University, Potchefstroom Campus (NWU PC) was estimated which could be used to produce 162 L of biodiesel. A waste valorization strategy was devised for converting organic wastes produced at the NWU PC to bioenergy. |
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Keywords: | Biodiesel lipase spent coffee oil sustainability transesterification waste management |
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