Use of Fungal Laccases and Peroxidases for Enzymatic Treatment of Wastewater Containing Synthetic Dyes - Green Chemistry for Dyes Removal from Wastewater - page 212

Figure 6.4 Triazo and poly-azo dyes evaluated for fungal and enzymatic treatment.
Figure 6.5 Indigoid dyes evaluated for fungal and enzymatic treatment.
Figure 6.6 Phthalocyanine dyes evaluated for fungal and enzymatic treatment.
that these dyes contain multiple sulfonate groups, which enhance the water
solubility and limit the assimilability by bacteria [1]. In addition, partial
degradation of azo, diazo, and triazo dyes may result in the release of aro-
matic amines that are carcinogenic [10,11]. Examples of such degradation
byproducts include benzidine (4,4'-diaminobiphenyl) and 2-nitroaniline
(Figure 6.9).