Development and Techno-Economic Evaluation of Crystallization Techniques for GABA Purification from Fermentation...

Area of Science:

• Biochemical Engineering
• Separation Science
• Process Chemistry

Background:

• Growing demand for γ-aminobutyric acid (GABA) in medical and health sectors.
• Conventional GABA purification methods face challenges like low yield, high ethanol use, and environmental concerns.

Purpose of the Study:

• To develop an efficient, sustainable, and cost-effective purification process for GABA.
• To address limitations of existing GABA purification techniques.

Main Methods:

• A two-stage crystallization process: cooling crystallization for desalination (Na2SO4 removal) and "antisolvent-cooling" crystallization for GABA purification.
• Implementation in a 3.2 L system, followed by industrial-scale modeling and techno-economic analysis.

Main Results:

• Achieved 98.66% purity and 67.32% yield of GABA.
• Significantly reduced ethanol consumption and streamlined the purification workflow.
• Techno-economic analysis projected a 1.98-year payback for a 74.16 tons/year production plant.

Conclusions:

• The developed crystallization process is highly efficient, economically viable, and environmentally friendly for industrial GABA production.
• This method offers a sustainable alternative to conventional GABA purification techniques.