Nghiên cứu chế tạo vật liệu compozit trên cơ sở PbO2 ứng dụng làm điện cực anôt để xử lý nước thải nhà máy sản xuất giấy bằng phương pháp điện hóa

Abstract

PbO2 was electrosynthesized on 304 stainless steel substrates by current impose method in 0.1M Pb (NO3)2 + 0.1M HNO3 solution with and without TiO2 micro-particles. The results of durability testing of the material in 1M H2SO4 acid solution at 200 mA/cm2 current density for duration of 5400 seconds showed that 0.1M Pb(NO3)2 + 0.1M HNO3 solution with 3 g/L TiO2 is suitable for synthesis of PbO2-TiO2 composite electrode. The analysis by scanning electron microscopy combined with energy dispersive X-ray showed the presence of TiO2 in the PbO2 plating. The decomposition yield of polluted organic compounds in wastewater of Lua Viet paper stock company on PbO2-TiO2/TKG304 (92.9%) anode was found higher than that of PbO2/TKG304 electrode (82.1%) and the polluted organic compound treatment in wastewater of paper mill industry by Fenton electrochemical method is better than electrochemical method.