About 35% Yellow direct 12 has also been reported [31] to be decolorized by ZnO in the dark under similar experimental conditions.
Many microorganisms have been reported for their ability to decolorize the dyes include bacteria, fungi, actinomycetes etc. (Chang et al. 2001; Khehra et al. 2005).
The purified peroxidase (25 units) was tested for its ability to decolorize dyes that have been reported as contaminants in wastewaters from textile, plastic, paper industries and laboratory.
Recently, it has been reported that many aromatics dyes can be decolorized by peroxidase through the precipitation or breaking of the aromatic ring structure (Husain 2010).
Similar results have been reported by Chakraborty et al. (2013), where at an agitation speed of 150 and 120 rpm, the fungus Alternaria alternata CMERI F6 was able to decolorize 99.99% of 600 mg/L Congo Red dye.
The fungal isolates with decolorizing activity and their level of decolorization are reported in Table 2.
Similar results were reported by Kaushik et al. (2014), where, Aspergillus lentulus successfully decolorized 90% of 100 mg/L of Acid Blue 120 up to 5 reused cycles in the fungal pelleted aerobic bioreactor.
The result of this study is reported in Table 3, and it is clear that PACW has high CR% fitted with standard decolorizing structures.
In contrast, 0.5 g of Pencillium ochrochloron was sufficient to decolorize (93% decolorization) 50 mg/L of Cotton Blue within 2.5 h (Shedbalkar et al. 2008).
