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
Nội dung chính của bài viết
Tóm tắt
SYNTHESIS OF COMPOSITE MATERIALS BASED ON PbO2 APPLIED TO ANODE FOR PAPER MILL WASTE WATER TREATMENT BY ELECTROCHEMICAL METHOD
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.
Từ khóa
PbO2-TiO2 composite electrode, Fenton electrochemical method, paper mill wastewater treatment
Chi tiết bài viết
Tài liệu tham khảo
2. Dinh Thi Mai Thanh, Pham Thi Nam, Do Thi Hai, Investigating and selecting optium conditions to electrosynthesize PbO2 on 304 stainless steel by imposed current method, Vietnam journal of chemistry, 2010, 48(4C):313-318.
3. Đinh Thi Mai Thanh, Nguyen Hai Yen, Nguyen Thi Thu Trang, Nguyen Thu Phương, Pham Thi Nam, Thai Hoang, Applying PbO2-TiO2/304 stainless steel nanocomposite material for anodic electrode in the treatment of paper industry wastewater, Analytica Vietnam conference, 2011, p.144-149.
4. Nguyễn Thu Phương, Phạm Thị Năm, Phạm Thị Thu Trang, Đinh Thị Mai Thanh, Nghiên cứu ảnh hưởng của các phụ gia đến quá trình tổng hợp điện hóa PbO2, Tạp chí hóa học, 2011, 49(2ABC):605-612.
5. Amadelli R., Samiolo L., Velichenko A.B., Knysh V.A., Luk’yanenko T.V., Danilov F.I., “Composite PbO2-TiO2 materials deposited from colloidal electrolyte: Electrosynthesis and physicochemical properties”, Electrochimica Acta, 2009, 54, p.5239-5245.
6. Velichenko A.B., Amadelli R., Knysh V.A., Luk’yanenko T.V., Danilov F.I., “Kinetics of lead dioxide electrodeposition from nitrate solutions containing colloidal TiO2”, Journal of electroanalytical, 2009, 632, p.192-196.
7. Yuehai Song, Gang Wei, Rongchun Xiong, Structure and properties of PbO2 - CeO2 anodes on stainless stee,. Electrochica Acta, 2007, 52, p.7022-7027.