Fe element B-site doped lanthanum-copper perovskite type material for cellulosic ethanol wastewater treatment

The use of multifunctional materials as catalysts for the removal of organic pollutants from water is an emerging means of degradation. In this study, LaCuO 3 was prepared by citric acid composite sol-gel method, new LaCu x Fe 1-x O 3 composites were prepared by doping with Fe elements to form a complete perovskite type structure, the apparent morphology, crystalline structure and elemental morphology of the materials after B-site doping were analyzed by XRD , SEM, BTE and XPS characterization. The optimal performance of the material was determined for the doping amount of Fe 3+ x = 0.4, at a gel temperature of 80 °C, a complexing agent dosage of 1:3, and a calcination temperature of 700 °C. After system preference, determined that the LaCuO 3 /PMS system has good catalytic degradation. And optimal reaction conditions were a reaction temperature of 50 °C, an initial pH of 4, PS:12COD = 1.2, and a catalyst dosage of 1 g/L. The cellulosic ethanol wastewater COD removal rate reached 91.64 %. The discharge standard of cellulosic ethanol wastewater was met. Therefore, this study can provide a reference for the treatment of cellulosic ethanol wastewater.