on Resin in Industrial Wastewater Treatment

Firstly, there is cation exchange resin: studies have shown that under normal temperature conditions, when Dl13 resin adsorbs Mn (II), the removal rate of Mn (II) ions in wastewater reaches 99% and the adsorption capacity is 136.98mg/g when the solution pH is 6.5-7.0 and the adsorption time is 120 minutes. When the concentration of hydrochloric acid is 3-4mol/L, the desorption rate can reach 100%. The adsorption curve of the resin for Mn (II) conforms to Langmuir and Fre undlich adsorption isotherms, and the internal diffusion coefficient increases with the increase of solution pH and Mn (II) concentration in the solution.