Application of Chitosan-Konjac Glucomannan Composite Flocculant in the Treatment of Dyeing Wastewater
Chitosan/konjac glucomannan composite flocculant was prepared by modified-crosslinking method.Methylene blue was used as an example to treat printing and dyeing wastewater.The effects of the dosage,adsorption time and pH value of chitosan/konjac glucomannan composite flocculant were investigated by calculating the adsorption rate with reference to literature.The results showed that the initial concentration of methylene blue solution was 8.0 mg/L and the pH of the solution was 9 at room temperature.When the dos-age of chitosan/Konjac glucomannan I composite flocculant was 0.3 g,and the adsorption time was 72 h,the adsorption rate of methylene blue solution reached 98.90%.
printing and dyeing wastewaterchitosankonjac glucomannanultraviolet-visible spectro-photometry