Table 1A.
Values and design parameters used for economic analysis.
| Items | Cost /units | Required quantity for |
||
|---|---|---|---|---|
| (US$ 1 = THB 32.30) | phycocyanin | 2 productsa | 3 productsb | |
| Equipment: | ||||
| Mixing tanks (500 L) | 4489.16 US$/set | 3 set | 3 set | 3 set |
| Mixing tanks with temp. control | 5417.96 US$/set | – | 1 set | 2 set |
| Continuous centrifuge (5000 L/h) | 160,990.71 US$/set | 1 set | 1 set | 1 set |
| Storage tank (500 L) | 3560.37 US$/unit | 2 unit | 2 unit | 2 unit |
| Cooling system (5000 L/h) | 6191.95 US$/set | 1 set | 1 set | 1 set |
| Freeze Drier (40 kg/day) | 157,894.74 US$/set | 1 set | 1 set | 1 set |
| Rotary evaporator | 139,318.89 US$/set | – | 1 set | 1 set |
| Filtration system: (4000 L/h) | ||||
| MF (1&0.2 μm) and UF 50 kDa | 236,842.11 US$/set | 1 set | 1 set | 1 set |
| UF 30 kDa | 8,359.13 US$/set | – | – | 1 set |
| Plant Assumption: | ||||
| Building (1600 m2) | 13,931.89 US$/unit | 1 unit | 1 unit | 1 unit |
| Plant life | 10 years | |||
| Working day | 300 days/year | |||
| Working hour | 16 hours/day | |||
| Productions capacity: | ||||
| Phycocyanin production (kg/year) | 600 | 600 | 600 | |
| Extraction vol. of phycocyanin (L/year) | 600,000 | |||
| (2000 L/day; 1000 L/batch × 2 batches/day) | ||||
| Arthrospira biomass (kg/year) | 10.84 US$/kg | 6000 | 6000 | 6000 |
| Lipid production (kg/year) | – | 300 | 300 | |
| Polysaccharide production (kg/year) | – | – | 35 | |
| Material assessment: | ||||
| K2HPO4 (ton/year) | 5.26 US$/kg | 6.38 | 6.38 | 6.38 |
| KH2PO4 (ton/year) | 3.87 US$/kg | 3.17 | 3.17 | 3.17 |
| Water (m3/year) | 0.40 US$/m3 | 600 | 600 | 760 |
| Ethanol (m3/year) | 1.15 US$/L | – | 21 | 25.5 |
| Electricity (kW.h/year) | 0.09 US$/kW.h | 26,400 | 30,360 | 34,320 |
| Labor (persons/year) | 12.08 US$/day | 4 | 8 | 8 |
| Utility & Maintenance at 2% of capital cost | ||||
a
2 products = phycocyanin and lipid.
b
3 products = phycocyanin, lipid and polysaccharide.