Table 6 Annual operating and production costs
From: Enzymatic corn wet milling: engineering process and cost model
Conventional | Enzymatic | |||
|---|---|---|---|---|
Material flow | Annual cost | Material flow | Annual cost | |
Metric ton/year | (US$x1000)/year | Metric ton/year | (US$x1000)/year | |
Operating costs | ||||
Raw materials | ||||
Corn – kg | 839,520 | 111,018 | 839,520 | 111,018 |
Enzyme | 1,440 | |||
Other raw materials | 396 | 418 | ||
Depreciation | 7,933 | 7,494 | ||
Facility related costs | 3,467 | 3,275 | ||
Utilities | 12,550 | 12,508 | ||
Operations labor | 1,980 | 1,980 | ||
Total operating costs | 137,344 | 138,134 | ||
Co-product credits | ||||
Corn gluten meal | 48,090 | 19,255 | 49,788 | 19,696 |
Corn gluten feed | 150,439 | 12,071 | 143,216 | 11,414 |
Corn germ | 55,684 | 16,482 | 57,117 | 16,855 |
Total co-product credits | 47,808 | 47,965 | ||
Annual starch production 1 | 463,150 | 89,536 | 466,632 | 90,169 |
Unit starch production cost ($/kg) | $0.19332 | $0.19323 | ||