Dissertation > Excellent graduate degree dissertation topics show

Preparation of Electro-catalytic Oxidation Anodes and Their Applications in Organic Waste Water Treatment

Author: GuoYingWei
Tutor: WangJianYa
School: Shenyang University of Technology
Course: Materials Science
Keywords: Electro-catalytic oxidation Cyclohexanone Adipic acid Imazethapyr Wastewater Treatment
CLC: X703
Type: Master's thesis
Year: 2006
Downloads: 285
Quote: 2
Read: Download Dissertation

Abstract


Ti/PbO2、Ti/SnO2、Ti/SnO2+Sb2O3/PbO2 anodes are prepared by brush coating with high temperature oxidation and electro-deposition method. Methodology for the electrochemical decomposition of cyclohexanone, adipic acid, imazethapyr using Ti/PbO2、Ti/SnO2、Ti/SnO2-Sb2O5/PbO2 anodes are suggested in the paper.The results of an experimental study on the destruction of imazethapyr by electrochemical oxidation in NaCl medium are compared with the data obtained by electrochemical oxidation in Na2SO4 medium. The UV-VIS spectra obtained by process monitoring indicated that the reaction mechanism is different from each other when using different electrolyte. Imazethapyr was mineralized directly when using Na2SO4 as the electrolyte, while a kind of intermediate product was formed rapidly and then mineralized fast when using NaCl as the electrolyte. NaCl was selected as the electrolyte for electrochemical oxidation of imazethapyr and the conditions of electrolysis reaction were optimized. The process of electrochemical decomposition was primarily monitored by ultra-violet spectrophotometric method. The electrochemical decomposition mechanism of imazethapyr was studied by UV-VIS spectrophotometry and the comparative aerobic biological water treatment test. The effectiveness of the electrochemical pretreatment was proved by the comparative aerobic biological treatment based on the activated sludge process.The results of an experimental study on the destruction of cyclohexanone, adipic acid by electrochemical oxidation in Na2SO4 medium, and studied the effection of Na2SO4 medium concentration, pH value, space between the electrodes, electric current, Optimizing the electrolytic response condition. The optimized electrochemical decomposition conditions as following, electric current is 40mA/cm2, Na2SO4 concentration is 2.4g/L, pH is 6, distance between electrodes is 10mm.The electrochemical decomposition mechanism of cyclohexanone and adipic acid was studied primarily by UV-VIS spectrophotometry. The electro-decomposition process ofcyclohexanone on the surface of Ti/PbO2> Ti/SnO2+Sb2O3/PbO2 is similar. A kind of intermediate product was formed, and the organic compound was mineralized gradually. While the compound was electrochemical combustion on the surface of Ti/SnO2 anode, it was mineralized directly.The electro-decomposition process of adipic acid on the surface of Ti/PbC>2^ Ti/SnC>2> Ti/SnO2+Sb2O3/PbO2 anodes was similar. A series of intermediate product was formed, and the organic compound was mineralized gradually.Chemical oxygen demand （COD） of waste water was monitored by potassium dichromate method, and COD removal achieved at 50% when the sample was electrolyte 270 minutes.

Related Dissertations

  1. Studies on the Synthesis and Technology of Dipentaerythritol and Its Derivative,TQ223.164
  2. Selection and Optimization of Control Technics in CODCr and Colority of the Refined Cotton Wastewater Treatment Process in a Refined Cotton Enterprise in Rudong, Jiangsu Province,X791
  3. Experimental Study of Improved UASB Reactor Treatment of Organic Wastewater,X703
  4. Study on the Refractory and Toxic Wastewater with Microbial Fuel Cell,X703
  5. Effects of Imazethapyr on Soil Microorganism, Enzyme Activity and Isolation of Imazethapyr Degrading Fungi,S482.4
  6. Treatment of Tailrace of Pesticide Wastewater Treatment Station by Constructed Rapid Infiltration System,X703.1
  7. Study on the Crystal Structures of β-Cyclodextrin Inclusion Complexes,O636.1
  8. Study on Drainage Charge System and Application Research,TU992
  9. Analyzing the Questions in the Effects Management and Plan Designing of Hongyuan Dayu Wastewater Treatment Co.Ltd,F299.24
  10. Operation Cost Mathematical Model Developing for BAF Sewage Treatment Plant in China,X703
  11. Advanced Treatment of Cookery Wastewater and Mechanism by Fluid Three-dimensional Electrode Reactor,X703
  12. Sedimentation tanks mathematical model of fluid dynamics analysis,X703
  13. A PRELIMINARY STUDY ON CONTROLLONG TECHNOLOGY OF TOXIC ORGANIC POLLUTANTSIN MGP-WASTEWATER,X703.1
  14. Study on Processes and Mechanism of Dmso Production Wastewater Treatment Enhanced by Microwave,X703.1
  15. Structural and Functional Analysis of Thauera Genus in Wastewater Treatment Plants,X703
  16. Gaussian mode in liquid ammonia spill environmental pollution control,X703
  17. Research of Non-thermal Plasma Induced Aqueous Oxidation Technology in Wastewater Treatment by High-frequency and High-voltage Power Supply,TM89
  18. AB treatment of diosgenin wastewater produced,X703
  19. Design and Process in a Submerged-flat Membrane Bioreactor,TQ052
  20. Study on Screen of Microbioflocculant and Application in Wastewater Treatment,X703.5
  21. Degradation of Biorefractory Organics by Electrocatalytic Oxidation,X703

CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
© 2012 www.DissertationTopic.Net  Mobile