This study estimated the potential of algal bioenergy production using nitrogen and phosphorus present
in the dairy manure (produced in the US). State wise dairy manure production and energy mixes were
used to estimate algal bioenergy production and associated life cycle nonrenewable primary energy
demand and greenhouse gas emissions for the four scenarios. These scenarios were constructed using
various combination of following processes (i) anaerobic digestion, (ii) algal biodiesel production using
effluent from (i), (iii) pyrolysis, and (iv) enzymatic hydrolysis. Bioenergy production, nonrenewable primary
energy demand and greenhouse gas emissions of each state were aggregated to estimate the total
bioenergy production, nonrenewable primary energy requirement and greenhouse gas emissions for the
US. Two different cases were simulated for each scenario, one without taking into account the nutrient
values (N, P) of applied sludge generated from the bioenergy production
This study estimated the potential of algal bioenergy production using nitrogen and phosphorus presentin the dairy manure (produced in the US). State wise dairy manure production and energy mixes wereused to estimate algal bioenergy production and associated life cycle nonrenewable primary energydemand and greenhouse gas emissions for the four scenarios. These scenarios were constructed usingvarious combination of following processes (i) anaerobic digestion, (ii) algal biodiesel production usingeffluent from (i), (iii) pyrolysis, and (iv) enzymatic hydrolysis. Bioenergy production, nonrenewable primaryenergy demand and greenhouse gas emissions of each state were aggregated to estimate the totalbioenergy production, nonrenewable primary energy requirement and greenhouse gas emissions for theUS. Two different cases were simulated for each scenario, one without taking into account the nutrientvalues (N, P) of applied sludge generated from the bioenergy production
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