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Table 10 Esterification condition with corresponding Acid and FFA values

From: Brette Pearl Spar Mable (BPSM): a potential recoverable catalyst as a renewable source of biodiesel from Thevetia peruviana seed oil for the benefit of sustainable development in West Africa

Methanol/acid volume ratio Acid value (mgKOHg-1) FFA (mgKOHg-1)
- 3.8048 1.9024
3.00 2.6920 1.8460
6.00 2.2792 1.1396
9.00 1.3536 0.6768
12.00 0.7896 0.3948