3.2.4. The influence of particle size reduction
The measurements of biomethane production indicated that
size reduction by milling alone of the wheat straw to 3 mm and
smaller, significantly enhanced the initial rates of hydrolysis.
When comparing biomethane production from the milled-only
wheat straw samples, it was observed that 10 mm straw produced
50.9% less gas on average than each of the other particle sizes in
the first 5 days of digestion. In the first 5 days of digestion, the
10 mm wheat straw produced 9.86 NmL-CH4 g-VS1 d1 on