aerobic treatment can be used to detoxify dyes
(Seshadri et al., 1994).
Previous workers have studied the parent form
of textile reactive dyes. However, this may have
different chemical and biological properties to the
hydrolysed form which is the actual form found in
dyehouse effluents. This paper reports the toxicity
(Hao et al., 1996) of various azo dyes (parent and
hydrolysed forms) following anaerobic decolourisation
using pure bacterial cultures, and a mixed
microbial consortium in a laboratory scale baffled
reactor.