Biodiesel production with immobilized lipase: A review

Area of Science:

• Biocatalysis
• Renewable Energy
• Green Chemistry

Background:

• Biodiesel, or fatty acid alkyl esters, offers an environmentally friendly liquid fuel alternative.
• Transesterification of oils/fats using chemical catalysts or lipase is the primary production method.
• Immobilized lipase is gaining attention for its 'greener' biodiesel production process.

Purpose of the Study:

• To review the current state of biodiesel production utilizing immobilized lipase.
• To discuss various lipases, immobilization techniques, feedstocks, and industrialization challenges.
• To identify areas for future research in cost reduction and efficiency improvement.

Main Methods:

• Review of scientific literature on immobilized lipase for biodiesel production.
• Analysis of different lipase types and immobilization strategies (e.g., adsorption).
• Examination of factors affecting lipase activity and stability, including alcohol inactivation.

Main Results:

• Adsorption remains the most common lipase immobilization method.
• Candida antarctica lipase on acrylic resin and Candida sp. 99-125 lipase on textile membranes are frequently used for industrial scale.
• Lipase inactivation by short-chain alcohols is a significant consideration.

Conclusions:

• Immobilized lipase offers a promising route for sustainable biodiesel production.
• Further research into novel immobilization techniques is crucial for enhancing enzyme activity and stability.
• Reducing production costs through improved immobilization is essential for widespread industrial adoption.