Acid Anthraquinone Dyes

Surface water and wastewater treatment using a new tannin-based coagulant. Pilot plant trials

“…1) that give it its persistent character. It belongs to the acid family of dyes, which are extensively used to dye wool, silk, and synthetic polyamide fibers in bright shades (Schoenauer et al, 1977). Laundry wastewater was simulated by a surfactant solution.…”