Table 3 Costs of raw materials used in the base case study
Raw materials | Cost | Unit | References |
|---|---|---|---|
Inputs | |||
 Biogas | 130.3 | $/ton | [59] |
 Carbon dioxide | 74.1 | $/ton | [60] |
 Natural gas | 182.5 | $/ton | [61] |
 Ammonia | 431 | $/ton | [33] |
 Flocculant | 9670 | $/ton | [58] |
 Electricity | 0.1 | $/KW | [62] |
 Water | 0.2 | $/ton | [63] |
 Cooling tower chemicals | 3372 | $/ton | [49] |
 Sludge disposal cost | 15.9 | $/ton | [64] |
Outputs | |||
 Electricity credit | 0.1 | $/KW | [62] |
 CO2 credit | 30.2 | $/ton | [65] |
 AD sludge N credit | 271 | $/ton | [44] |