High FFA content can cause several issues in industrial processes:
1. Corrosion: FFAs can corrode processing equipment. 2. Soap Formation: In the presence of a base catalyst, FFAs react to form soap, which complicates the separation of biodiesel and glycerol. 3. Lower Yield: High FFAs can reduce the yield of the desired product, particularly in biodiesel production. 4. Quality: The presence of FFAs can affect the quality of edible oils, leading to off-flavors and reduced shelf-life.