Wet metallurgical removal of copper, nickel, and zinc using CH-90 macroporous chelating resin

Wet metallurgical removal of copper, nickel, and zinc using CH-90 macroporous chelating resinUsing extractants, copper was extracted and recovered from wastewater with a copper concentration of 1.3-2.5 g/L. The effects of pH value of the test solution, volume fraction of extractants, comparison, and extraction time on copper extraction rate were studied, and the influence of dilute sulfuric acid concentration on washing effect was investigated. The experimental results showed that ZJ988 extractant had good selectivity for copper, and the optimal process conditions for extraction and washing were obtained: the pH value of the test solution was 2.0, the volume fraction of the extractant was 15%, the ratio (O/A) was 1:1, the extraction time was 3 minutes, and the washing solution was 6 g/L dilute sulfuric acid. Feasibility of combined treatment of copper containing wastewater by electrolytic electrodialysis. The results indicate that the recovery rate of electrolytic copper increases with the increase of voltage and influent quality concentration, and decreases with the decrease of influent flow rate. When U=4.5 V, ρ (Cu2+) inflow is 500 mg/L, and q inflow is 1 L/h, the maximum copper recovery rate is 70%, and the energy consumption is 11 (kW. h)/kg. After electrolysis, the tail liquid is continuously treated by electrodialysis, and the removal rate of copper in fresh water is about 98%. The concentration factor of concentrated water is above 2, and the energy consumption is 0.9-3.0 (kW. h). It can be further recovered by electrolysis. According to the X-ray diffractometer, the recovered copper is almost 100%, and the particle size of the recovered copper increases with the increase of current density. Feasibility of combined treatment of copper containing wastewater by electrolytic electrodialysis.

Wet metallurgical removal of copper, nickel, and zinc using CH-90 macroporous chelating resinManufacturer; Tianjin Xijinna Environmental Protection Materials Technology Co., Ltd; The recovery rate of electrolytic copper increases with the increase of voltage and influent concentration, and decreases with the decrease of influent flow rate. When U=4.5 V, ρ (Cu2+) inflow is 500 mg/L, and q inflow is 1 L/h, the maximum copper recovery rate is 70%, and the energy consumption is 11 (kW. h)/kg. After electrolysis, the tail liquid is continuously treated by electrodialysis, and the removal rate of copper in fresh water is about 98%. The concentration factor of concentrated water is above 2, and the energy consumption is 0.9-3.0 (kW. h). It can be further recovered by electrolysis. According to the X-ray diffractometer, the recovered copper is almost 100%, and the particle size of the recovered copper increases with the increase of current density. Antibiotic extraction, separation, and purification using macroporous adsorption resin.