Effect of solute from wool on properties of potassium dichromate

To investigate the serious pollution problem resulting from the chrome in the residual liquid during acid mordant dyeing process,the solute from the wool in heating process was researched.The property of the solute was tested and the influence of the solute on the property of potassium dichromate in the aqueous solution and the adsorption of potassium dichromate on the wool fabric was studied.The results showed that the solute contained soluble protein which could react with Cr2O2-7 ionized out from the potassium dichromate solution.So the chrome content was increased in the residual liquid of the dyeing process with acid mordant dye.