Decolorization of a Simulated Reactive Textile Dyeing Effluent using a Plant-derived Coagulant

The ability of a commercial tannin-based coagulant on the decolorization simulated textile effluent containing reactive dye was studied in batch mode. For comparison, two conventional chemical coagulants (aluminum sulfate and Rifloc 6548-organic coagulant) were also tested. Preliminary assays suggested higher performance Tanfloc SG over metal salt. Optimization conducted for SG, indicated maximum color removal 86.4%, recorded at dosage 240 mg/L pH 7. A efficiency 42.4% found optimized 144 9. At this condition, treatment cost using estimated as 0.21 EUR/m3, around twice when used 96 mg/L, generating 81% efficiency. outperformed Tanfloc, its use seemed to be more economical but may have negative impacts environment. However, still showed promising results presented better terms sedimentation velocity floc size.