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Table 3 Sensitivity analysis of primary energy balances of the ethanol production systems studied

From: Integrating enzyme fermentation in lignocellulosic ethanol production: life-cycle assessment and techno-economic analysis

MJ primary energy MJ−1 ethanol ISO  RED
Off-site A A+ B B+ Off-site A A+ B B+
Base case 2.8 2.7 2.6 2.6 2.5 2.0 2.0 1.9 1.9 1.9
Off-site enzyme activity +50% 2.7      2.0     
Enzyme dosage based on [7] 2.5      1.9     
Solid fuel substitutes coal 2.7 2.6 2.5 2.5 2.4      
  1. Results for alternative data regarding purchased enzymes and substituted products