FPH Production yield /batch (kg) Annual FPH production yield (ton) Starting materials FPCP /batch (ton) Annual used FPCP materials (ton) Total capital investment (million USD) Operation  cost/year (million USD) Total revenues year (million USD ) (main revenue + co revenue Payback time (Year) Return on investment 100 92.6 0.9 755 10.96 5.07 2.50 (1.85+0.64) N/A** -22.42% 200 185. 2 1.8 1511 11.79 7.54 5.00 (3.71+1.29) N/A -20.81% 300 277.8 2.7 2267 12.31 9.95 7.51 (5.56+1.94) N/A -19.29% 400 370.4 3.6 3022 12.94 12.38 10.01 (7.42+.59) N/A -17.86% 500 463.0 4.5 3778 13.38 14.78 12.51 (9.28+3.23) N/A -16.64% *Simulations were based on the purchase cost of FPCP at USD 3/kg, selling price of FPH at USD 20/kg and the maximum annual available FPCP of 3,900 tons ** N/A: Not applicable

Table 2: Economic feasibility analysis* of FPH industrial production using the microwave-intensified enzymatic process at different production scale