| Popis: |
Biocatalytic biodiesel production is an alternative to chemical synthesis of fatty acid alkyl esters. Enzymatic (trans)esterification of cheap feedstocks (glycerides with high free fatty acid and water contents, such as waste oils and fats), in mild reaction conditions leads to cleaner products and significant reduction in solid and liquid waste streams. However, biocatalysts impart a high production cost; enzyme deactivation, inhibitor tolerance and the need for expensive sterile equipment requirements are other characteristics. Since biocatalysts are more expensive than traditional chemical catalysts, their recovery is compulsory from an economical point of view. Enzyme immobilisation on a solid support permits continuous processes. This chapter reviews (trans)esterification of lipases and biocatalysis of (immobilised) lipases for biodiesel synthesis. |
