Biofuel production from spent coffee grounds via lipase catalysis

• Published in: Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
• Main Authors: Karmee, Sanjib Kumar, Swanepoel, Wian, Marx, Sanette
• Other Authors: 10216847 - Marx, Sanette, 28232100 - Karmee, Sanjib Kumar
• Format: Article in Journal/Newspaper
• Language: English
• Published: Taylor & Francis 2018
• Subjects: Biodiesel; Lipase; Spent coffee oil; Sustainability; Transesterification; Waste management; Rugosa; Antarc*; Antarctica
• Online Access: http://hdl.handle.net/10394/26428; https://www.tandfonline.com/doi/full/10.1080/15567036.2017.1415394; https://doi.org/10.1080/15567036.2017.1415394

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