Opportunities of biodiesel industry waste conversion into value-added products

• Main Authors: Chilakamarry, Chaitanya Reddy, Sakinah, A.M. Mimi, Zularisam, A.W.
• Format: Conference Proceeding
• Language: English
• Subjects: Bioconversion; Biodiesel; Bioethanol; Crude glycerol; Valuable products
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2021.08.248

•Glycerol waste is a primary byproduct of the biodiesel industry.•Glycerol is a leading source for various valuable industrial products.•Bioconversion of glycerol is a sustainable approach.•Glycerol waste makes revenue to biodiesel industries and to the overall economy of the biodiesel process. The global attention for the alternative fuel to decrease the dependence on carbon-biased fossil fuels and reduce the carbon footprint led to biodiesel production. Crude glycerol generated as a major by-product of the biodiesel industry. The vast amounts of crude glycerol pose an environmental threat. Valorisation of industrial waste is the big challenge to provide a significant economic advantage by the sustainable approach. Hence the crude glycerol needs to be valorised through the biotechnology process into value-added products and gives biodiesel producers more revenue. The biodiesel industrial by-product glycerol waste serves as raw material to convert into several products like citric acid, succinic acid, 1,3-propanediol, butanol, and ethanol. The present manuscript focuses on the significance of crude glycerol from the biodiesel industry as a stable feedstock that undergoes biotransformation to value-added products by microorganisms.