Biodiesel fuel (fatty acid methyl esters), which is produced by methanolysis of triglycerides, has recently attracted consid- erable attention as a renewable, biodegradable, and nontoxic fuel. During the past decade, the environmental benefits of using this fuel have accelerated the development of processes for its production around the world . In the several processes so far proposed, chemical catalysts including alkalis have been employed most widely since they give a high conversion of triglycerides to methyl esters in a short reaction time. How- ever, processes using an alkaline catalyst have several drawbacks including the difficulty of recycling glycerol, the need to elim- inate the catalyst and salt, and their energy-intensive nature, leading to development of alternative processes.
Biodiesel fuel (fatty acid methyl esters), which is produced by methanolysis of triglycerides, has recently attracted consid- erable attention as a renewable, biodegradable, and nontoxic fuel. During the past decade, the environmental benefits of using this fuel have accelerated the development of processes for its production around the world . In the several processes so far proposed, chemical catalysts including alkalis have been employed most widely since they give a high conversion of triglycerides to methyl esters in a short reaction time. How- ever, processes using an alkaline catalyst have several drawbacks including the difficulty of recycling glycerol, the need to elim- inate the catalyst and salt, and their energy-intensive nature, leading to development of alternative processes.
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