Abstract
This study was carried out to explore biomass variety of sorghum, pearl millet and bamboo for second generation biofuel feedstock production at salinity and drought prone marginal land at three districts of Gujarat state, India. The biomass feedstock under study were compared with the native crop varieties for its economic sensitivity as well as native varieties of the same crops for energy and carbon dioxide equivalent (CO2eq) greenhouse gas (GHG) emission. Net income per matric tone of harvested biomass sorghum, pearl millet and bamboo were 52.02 USD, 20.37 USD and 124.66 USD respectively which is economically profitable as compared to native sorghum and pearl millet varieties. Bamboo showed highest net income of 8 USD/day based on the annual land occupancy which is double than biomass sorghum. Positive net energy balance of 454.29 GJ/Ha/crop cycle, 278.20 GJ/Ha/crop cycle and 602.49 GJ/Ha/Year were found for biomass sorghum, pearl millet and bamboo respectively. GHG emission was positive and lowest for bamboo 42.55 KgCO2eq/MT as compared to biomass sorghum 48.97 KgCO2eq/MT and pearl millet 74.53 CO2eq/MT. Cost benefit analysis revealed that bamboo has highest net income, lowest GHG emission, highest net energy balance and highest biomass production per USD spent among the other biomass crops.
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