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Method for conducting electrocatalytic oxidation treatment on phenol organic wastewater through novel anode

A technology for electrocatalytic oxidation and organic wastewater, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as water ecology and drinking water safety hazards, secondary pollution, etc., and achieve electrocatalysis The effect of increased active sites, high degradation efficiency, and reduced energy consumption

Inactive Publication Date: 2018-05-11
HUAINAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Higher concentrations of phenol can resist natural degradation in water, which brings huge safety hazards to water ecology and drinking water. Usually, the method of degrading such toxic organic wastewater is through traditional adsorption extraction or microbial degradation. These methods have obvious defects. , will not only produce secondary pollution but also require a large amount of financial support, so looking for a degradation method with high efficiency, low cost and no secondary environmental pollution to remove these toxic organic wastewater is the main point of our research

Method used

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Examples

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Effect test

Embodiment 1

[0030] In this embodiment, Ti / TiO2NTs-NiO / PbO2 new electrode electrocatalytic oxidation is used to treat toxic phenol organic wastewater, and the steps are as follows:

[0031] Step S1, preparing titanium dioxide nanotube arrays; increasing the specific surface area of ​​metal oxide deposition. The specific operation steps are:

[0032] 1) Pretreatment of titanium sheets: Grind the titanium substrate with carborundum paper respectively. After polishing, wash and remove oil with secondary water, acetone, and absolute ethanol in sequence, and then put the titanium substrate into HF and deionized after degreasing. Corroded in a mixed solution of water for 1 minute, and finally ultrasonically washed with secondary water and absolute ethanol in sequence, and dried at room temperature for use.

[0033] 2), preparation of titanium dioxide nanotubes by anodic oxidation: first prepare the ethylene glycol solution with a concentration of 0.3wt% NH4F, 3V% H2O and 97V% in a 100mL beaker,...

Embodiment 2

[0040] This embodiment adopts Ti / TiO2NTs-NiO / PbO2 The method for the electrocatalytic oxidation treatment of toxic organic pollutant phenol with new electrode, its process is basically the same as Example 1, the difference is:

[0041] Step S2, prepare a high-performance Ti / TiO2NTs-NiO / PbO2 electrode by two pulse electrodepositions and one high-temperature calcination, first prepare the pulse parameters of NiO doped in titanium dioxide nanotubes: I1=-180mA / cm2, duration t1=2ms; I2=+180mA / cm2, duration t2=1ms; intermediate pause current I3=0mA / cm2, duration t3=1s, total pulse time is 7 minutes, and the pH of the adjusted solution is 3. After the pulse operation, the prepared material was calcined in a muffle furnace at 480°C to form stable nickel oxide particles. Secondly, continue to deposit the lead dioxide catalytic layer on the Ti / TiO2NTs-NiO electrode by pulse electrodeposition with the electrode that has been calcined, and the specific electrodeposition parameters are I1=...

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Abstract

The invention relates to the technical field of electrocatalytic degradation application, in particular to a method for conducting electrocatalytic oxidation treatment on phenol organic wastewater through a novel anode. The method includes the following steps of S1, preparing a titanium dioxide nanotube array; S2, modifying NiO in nanotubes through a pulse depositing method and a high-temperaturecalcination method to prepare a Ti / TiO2NTs-NiO electrode high in conductivity; S3, using the Ti / TiO2NTs-NiO electrode as a working electrode, and preparing a high-performance Ti / TiO2NTs-NiO / PbO2 anodematerial through pulses; S4, conducting electrocatalytic oxidation treatment on the phenol organic wastewater through the prepared Ti / TiO2NTs-NiO / PbO2 anode material. The Ti / TiO2NTs-NiO / PbO2 modifying electrode is used as the anode, electrocatalytic oxidation treatment is conducted on the toxic phenol organic wastewater in an electrolytic cell, the degradation efficiency is higher than that of anordinary lead electrode, the degradation rate of COD of the phenol organic wastewater can reach 92.7%, the average current efficiency in the degradation process is remarkably improved compared with that of the ordinary lead electrode, the average current efficiency reaches 34%, electric energy loss is effectively reduced, and meanwhile degradation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic degradation application, in particular to a method for treating phenolic organic wastewater by adopting a novel anode electrocatalytic oxidation. Background technique [0002] With the rapid development of industrialization, many pollutants will be brought, among which organic wastewater is one of the main pollutants. How to quickly and effectively remove organic wastewater is related to environmental protection. Traditional organic wastewater treatment methods mainly include physical and chemical methods, biochemical methods, etc., but the fatal flaws of these traditional treatment methods are that the treatment capacity is very limited, the economic benefit is low, and secondary pollution will occur. Based on the above problems, in recent years, electro-oxidation technology has been paid attention to and developed rapidly. Electro-oxidation technology is to oxidize organic matter by ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/34
CPCC02F1/46109C02F1/725C02F2101/345
Inventor 王凤武王智成徐迈毛雨露朱传高方文彦魏亦军
Owner HUAINAN NORMAL UNIV
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