Abstract
Enzymatic biodiesel production has attracted tremendous interest due to its well-recognized advantages. However, high enzyme costs limit the application of enzymatic processes in industrial production. In the past decade, great improvements have been achieved in the lab and the industrial scale, and the production cost of the enzymatic process has been reduced significantly, which has led to it being economically competitive compared to the chemical process. This paper summarizes the progress achieved in enzymatic biodiesel research and commercialization, including reducing enzyme cost, expanding low-quality raw materials, and novel reactor designs. The advantages and disadvantages of different enzymatic processes are also compared.
Highlights
Biodiesel forfor itsits potential to relieve environmental pollutionBiodieselhas hasattracted attractedgreat greatinterest interest potential to relieve environmental polluand crisis [1].In the has attained remarkable growth in tion the andenergy the energy crisis [1].lastIn decade, the last biodiesel decade, biodiesel hasa attained a remarkable industrial and consumption worldwide
This review introduces the progress achieved in enzymatic biodiesel preparation and comled to it being economically competitive compared to the chemical process
This review introduces the progress achieved in the enzymatic biodiesel production process, mainly focusing on reducing enzyme cost, expanding low-quality raw materials, and novel reactor design
Summary
Biodieselhas hasattracted attractedgreat greatinterest interest potential to relieve environmental polluand crisis [1]. Compared to the conventional chemical process, lipase-mediated biodiesel production has well-recognized advantages, such as mild reaction conditions, easy product recovery, and environmental friendliness, and shows great prospect, especially when lowquality oils with high free fatty acid content are used as the feedstock [5,6,7,8,9]. Compared to the conventional alkali process, the biggest advantage of the enzymatic process is that it can efficiently use cheap and low-quality feedstocks with high free fatty acid content [10], which will significantly reduce the total production cost. This review introduces the progress achieved in the enzymatic biodiesel production process, mainly focusing on reducing enzyme cost, expanding low-quality raw materials, and novel reactor design
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