This technology allows
achieving more appropriate carbon to nutrient ratio (C/N/P) by
co-digesting nutrient-rich and highly chemical oxygen demand
(COD) concentrated wastes contributing to pH regulation and
avoiding possible ammonia inhibition problems.
An example of substrates with high buffering capacity (alkalinity) is livestock manure. Although the common practice for manure
management is landspreading, normally there is a surplus, which
can be used in anaerobic digestion. This way, decentralized co-
digestion of manure and FW seams as an interesting approach as
a farm scale energy production and as a waste treatment solution.
Several studies have reported the advantages of anaerobic co-
digestion of manure and FW, showing that experimental methane
yields obtained for the mixtures resulted in higher values than
those obtained from single substrates