Removal of nickel ions from automobile industry wastewater using ion exchange resin: Characterization and parameter optimization

Abstract

Ion exchange is an effect process for removing of heavy metals from wastewater effluents. In the present study, the sorption of nickel ion (Ni (Π)) in effluent from wastewater treatment plant of automobile industry was studied by using D113 ion exchange resin. The static shaking absorption experiments revealed that the process of absorption of Ni (Π) was more in line with non-monolayer absorption model of Freundlich that with a maximum absorption capacity of 36.13 mg/g. The column experimental data showed that under the optimum operating conditions which was pH 7.0, temperature 30 °C and 20 mL/min of flow rate it could meet the emission standard (GB25467-2010) of China with 10 h of processing time. Desorption rate of D113 resin could reach above 93.6% by using 0.8% H2SO4 with 5 mL/min of flow rate, and the analysis of FT-IR and SEM proved that -OH was the main functional group of the resin participate in metal binding, which demonstrated that the D113 resin could be considered as an effectively way for the advanced treatment of Ni (Π) ions in the effluents of automobile industry wastewaters.