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Table 2 Key indicators of Scenarios 2 and 3

From: Implementing circular economy concept by converting cassava pulp and wastewater to biogas for sustainable production in starch industry

Key indicator Unit Scenario 2 Scenario 3
Discount rate % 10 10
Investment cost (First year) Million USD 2.24 8.65
Net present value Million USD 1.98 6.14
Internal rate of return % 18 31
Payback period Year 5.03 4.37