Question

In what PH range does anaerobic digestion occurs at best?

(a) 6.8 – 8.0

(b) 0 – 5.0

(c) 2.3 – 4.5

(d) 3.5 – 7.2

The question was posed to me in my homework.

My query is from Anaerobic Fermentation topic in division Biomass Energy of Energy Engineering

Answer 1

The correct option is (a) 6.8 – 8.0

To explain: Anaerobic digestion will occur best within a PH range of 6.8 – 8.0. More acidic or basic mixtures will ferment at a lower speed. The introduction of raw material will often lower the PH (make the mixture more acidic).