Free fatty acid reduction in crude glycerol
Innovative methods for reducing free fatty acids (FFA) in crude glycerol using solvent mixing and saponification, improving glycerol purity for industrial applications.
Overview
This research introduces two innovative approaches to reduce free fatty acids (FFA) in crude glycerol, a byproduct of biodiesel production. By utilizing solvent mixing and saponification techniques, this solution aims to purify glycerol, enhancing its usability in various industrial applications. The proposed methods could significantly improve the economic value of crude glycerol by reducing impurities and increasing its utility in the pharmaceutical, cosmetic, and food industries.
Technical specifications
Approach 1: Solvent Mixing
- Mix crude glycerol with solvents like ethanol, methanol, or water to reduce viscosity.
- Add hexane, agitate, and allow separation into layers.
- Repeat the process until FFAs are minimized.
Approach 2: Saponification
- Saponify the fatty acids using alkali (NaOH or KOH).
- Slowly add 20 °Be NaOH to glycerol with agitation.
- Separate the resulting soap by centrifugation.
These methods leverage basic chemical processes to achieve high levels of FFA reduction, making the glycerol more suitable for further industrial processing.
Technology readiness level
The technology is currently at a Technology Readiness Level (TRL) of 3, indicating that it has been experimentally validated in a laboratory environment. Further development and real-world testing are needed to advance its readiness for commercial application.
About University of Illinois Chicago
UIC researchers are advancing discoveries across the life sciences, engineering, computer science, energy, manufacturing, public health, biomedical and other fields. Our scientists are supported by funding from the National Institutes of Health, National Science Foundation, U.S. Department of Energy, and other federal agencies.
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