Which of the following statements about anaerobic digestion is/are true?

Question

Accepted Answer

The digestion residue consists mostly of water, because as micro-organisms break down organic material, the proportion of dry matter decreases.

Accepted Answer

The biogas from anaerobic digestion can be used to produce both electricity and heat.

Answer

Anaerobic digestion produces biogas, of which about 30% is methane.

Answer

The digestate no longer contains significant amount of nutrients because they have run out in the digestion process.

Crowdly