No of days DR19 (λ495nm) Mixture of DR19 and DB9 (λ460nm) Percent Dye decolorization Percent TOC Removal Percent Dye decolorization Percent TOC Removal 20 91.2 93.2 82.1 83.4 40 79.4 80.1 76.9 77.3 60 77.7 78.2 64.3 67.8 80 65.8 66.7 53.2 56.3 100 63.4 62.8 33.7 37.4 120 59.4 60.2 23.2 25.1

Table 4: Continuous removal of color and TOC from DR19 and a mixture of (DR19+DB9) by immobilized PGP in a two-reactor system. DR 19/ mixture of dyes was treated with PGP in a two-reactor system as described in text. Each value represents the mean for five independent experiments performed in duplicate.