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Chapter 14

Biomass As A Sustainable Energy Source For The Future · 3 exercises

Problem 1

The hydrolysis rate coefficient of the biodegradable fraction of a feedstock is \(0.05 \mathrm{~h}^{-1}\). What retention time is required to obtain \(80 \%\) degradation of the biodegradable fraction of the substrate in a continuous stirred tank reactor (CSTR)? What happens to the retention time required if we place two CSTRs in series or in parallel?

2 step solution

Problem 4

Why do you think the biodegradable fraction of pig manure is low compared to that of the other feedstocks?

4 step solution

Problem 5

Why is the end product of anaerobic digestion methane-containing biogas and not, e.g., ethanol?

3 step solution

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