Preparation Of Fe/rectorite Nano-composite And Research Of Electrochemical Treating Phenol Wastewater

Due to the high efficiency of the degradation of pollutants, theadvantages of universality and complete water treatment research at home andabroad, electrocatalytic oxidation of advanced oxidation technologies havebeen great concern among the researchers as part of a new water treatmenttechnology. Because of phenol pollution in China is becoming increasinglyserious, degradation of phenol was selected as the destination in thisexperimental.Fenton oxidation technologies as a new type of water pollution controltechnology have widen the pH response range of Fenton oxidation system,and studied on immobilization technique of Fe2+/Fe3+and combined system ofelectrocatalytic oxidation and Fenton in the treatment of refractory industrialorganic wastewater of high concentration. All the researches above aimed toimprove the efficiency of photocatalytic degradation of water pollution; it isalso the research focus of Fenton oxidation technology in treatment ofrefractory industrial organic wastewater treatment areas.In this experiment study, electro-catalytic oxidation of iron/rectoritecomposite was prepared by intercalation solution method which took naturalclay mineral rectorite as the carrier and using iron salts as cross-linking agent.The structure of electro-catalytic oxidation of iron/rectorite composite wascharacterized and analyzed by means of X-ray diffraction (XRD), scanningelectron microscopy (SEM), infrared fourier transform spectroscopy (FITR)and differential thermal analysis (DTA). Analysis of material changes inmorphology, interlayer spacing occurs and whether have phase changesbefore and after the transformation were determined by the above means.Theexperiment studied on the effect of electro-catalytic oxidation of phenolwastewater treatment by iron/rectorite composite in different preparationconditions, and explored the factors affecting the preparation of iron/rectorite composite including optimum amount ration of raw materials, solid-liquidratio, pH, temperature and reaction time. It also studied the behavior ofiron/rectorite composite on electrochemical degradation of phenol, exploredthe mechanism of treatment of phenol wastewater and factors affecting theelectrochemical degradation of performance which included electrolysis time,electrolyte concentration, voltage, initial concentration of phenol andinitial pH. By self-made of iron/rectorite composite fixed Fe2+/Fe3+,successfully built Fenton/electrochemical system with hydrogen peroxide.The system can increase the rate of removal of phenol. As well as a new ironimmobilization technique, it was of great value to solve the technicaldifficulties of facing the challenge of current treatment of phenol wastewater.By means of those experiments indicates that modified compositerectorite shows well function on the phenol treatment, even highconcentration wastewater could be disposed in a short time and thedegradation rate exceeding98%.