Acid dyes, textile processing wastes

Anionic dyes can be removed from textile effluent streams at acidic pH with chitosan through protonated amine complexation with anionic dye sites. Phenols are common waste products in paper processing. Application of mushroom enzyme tyrosinase to the stream specifically converts phenols into quinones, which can subsequently be absorbed by chitosan. Toxic polychlorinated hiphenols (PCBs), commonly used in plastic processing and lubricants, are a significant source of water contamination. Although the nature of the interaction is not currently known, chitosan treatment shows potential in lowering PCB concentrations. 

Uses Defoamer for foam and froth control for industrial wastes, textile and paper processing, dyeing and printing Features Not affected by acid or alkali... 

---