Abstract
The rapid growth of global biodiesel production requires simultaneous effective utilization of glycerol obtained as a by-product of the transesterification process. Accumulation of the byproduct glycerol from biodiesel industries can lead to considerable environment issues. Hence, there is extensive research focus on the transformation of crude glycerol into value-added products. This paper makes an overview of the nature of crude glycerol and ongoing research on its conversion to value-added products. Both chemical and biological routes of glycerol valorization will be presented. Details of crude glycerol conversion into microbial lipid and subsequent products will also be highlighted.
Highlights
Global energy demand will increase due to population growth, industrialization and humankind’s desire for a better quality of life
Duetotothe low stable of crude researchers are focusing on its chemical and biological thecost lowand cost and nature stable nature ofglycerol, crude glycerol, researchers are focusing on its chemical and conversion into value-added products such as bioplastic, microbial oil, etc
To address the cost constraints involved with the use of heterogeneous catalyst, we have demonstrated the potential use of ash as heterogeneous catalyst for biodiesel production
Summary
Global energy demand will increase due to population growth, industrialization and humankind’s desire for a better quality of life. While crude glycerol can seem like a liability for many biodiesel producers, from a biorefining point point of view, it holds great potential for use as a starting material for value-added bio-chemicals. Duetotothe low stable of crude researchers are focusing on its chemical and biological thecost lowand cost and nature stable nature ofglycerol, crude glycerol, researchers are focusing on its chemical and conversion into value-added products such as bioplastic, microbial oil, etc. Most of these conversion biological conversion into value-added products such as bioplastic, microbial oil, etc Most of these processes are constrained byconstrained the negative of impurities glycerol the glycerol chemicalon reaction conversion processes are byeffects the negative effectsinofcrude impurities in on crude the or chemical the microbial strains used for bioconversion.
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