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Table 5 Capital and operating costs of overliming and preprocessing units

From: Novel ethanol production using biomass preprocessing to increase ethanol yield and reduce overall costs

  Capital cost (MM $) Direct operating cost with fresh water (MM $/year) Direct operating cost with process water (MM $/year)
Overliming $ 1.38 $ 0.96 $ 0.96
Preprocessing $ 2.68 $ 4.18 $ 0.16