Since some aromatic amines were not degraded under
methanogenic/anaerobic conditions, the studies focused
on different microbial communities, which could use
alternative electron acceptors through removal of colour
from the azo dyes. For this reason it is important to
highlight the enormous potential of microbial communities
in anaerobic environments for decolorizing azo
dyes and determining the possibility of degradation of
the aromatic amines.