Fig. 7
Comparison of the acetate concentration measured in the slurry and the acetate concentration expected when considering that wash-out is the only mechanism of removal (absence of microbial synthesis or degradation) for: a the free ammonia intoxicated reactor, HNR1, b HNR2 and c HNR3. The weekly pulp input is also presented for each HNR. Cumulative CH4 production for: d HNR1, e HNR2 and f HNR3. “Process reconditioning I, II, III”, “Process recovery” and “Process stability test” refer to the stages and phases described in Table 1