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Table 5 Indicators for process profitability for Scenario 1 and 2

From: Economic and environmental assessment of bacterial poly(3-hydroxybutyrate) production from the organic fraction of municipal solid waste

Indicator

Scenario 1

Scenario 2

Unit production cost (US$ year−1)

48

25

Gross profit (US$ year−1)

− 1,943,000

− 1,289,000

Net profit (US$ year−1)

− 1,282,000

− 793,000

Gross margin (%)

− 890

− 588

Return on investment (%)

− 17

− 14

Net present value at 7% (US$)

− 18,213,000

− 12,163,000

Payback time (years)

N/A

N/A