Electric chemical device and method for generating hydrogen peroxide from cathode and treating organic wastewater with anode

A technology of hydrogen peroxide and organic wastewater, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Simple structure, favorable for transfer and enrichment, and short time-consuming effect

Active Publication Date: 2019-10-08
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional electrochemical oxidation method produces oxygen by electrocatalytically oxidizing water at the anode, because the oxygen produced by the anode cannot be effectively recycled, resulting in a low energy utilization rate

Method used

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  • Electric chemical device and method for generating hydrogen peroxide from cathode and treating organic wastewater with anode
  • Electric chemical device and method for generating hydrogen peroxide from cathode and treating organic wastewater with anode
  • Electric chemical device and method for generating hydrogen peroxide from cathode and treating organic wastewater with anode

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Embodiment 1

[0043] The present embodiment provides a kind of electrochemical method that adopts above-mentioned device to carry out cathode to produce hydrogen peroxide while anode treats organic waste water, and it adds the Na of 0.5mol / L to cathode chamber 2 SO 4 solution with a mass fraction of 98% H 2 SO 4 Adjust the pH to 0.5, as the catholyte, the catholyte volume is 20ml; add 500mg / L methylene blue solution and 0.5mol / L Na 2 SO 4 solution and adjust the pH to 0.5, as the anolyte, the volume of the anolyte is 20ml; the reaction is carried out under the conditions of current 1.05A, oxygen flow rate 20ml / min, and circulation pump flow rate 20ml / min; oxygen diffuses to the cathode through the gas diffusion cathode On the surface, an oxygen reduction reaction occurs, and hydrogen peroxide is prepared in situ; an oxygen evolution reaction occurs at the anode, and the organic matter in the organic wastewater is directly oxidized by using the anodic oxidation environment; due to the exi...

Embodiment 2

[0048] The present embodiment provides a kind of electrochemical method that adopts above-mentioned device to carry out cathode to produce hydrogen peroxide while anode treats organic waste water, and it adds the Na of 0.5mol / L to cathode chamber 2 SO 4 solution with a mass fraction of 98% H 2 SO 4 Adjust the pH to 0.5, as the catholyte, the catholyte volume is 20ml; add 500mg / L rhodamine B solution and 0.5mol / L Na 2 SO 4 solution and adjust the pH to 0.5, as the anolyte, the volume of the anolyte is 20ml; the reaction is carried out under the conditions of current 1.05A, oxygen flow rate 20ml / min, and circulation pump flow rate 20ml / min; oxygen diffuses to the cathode through the gas diffusion cathode On the surface, an oxygen reduction reaction occurs, and hydrogen peroxide is prepared in situ; an oxygen evolution reaction occurs at the anode, and the organic matter in the organic wastewater is directly oxidized by using the anodic oxidation environment; due to the existe...

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Abstract

The invention relates to an electric chemical device and method for generating hydrogen peroxide from a cathode and treating organic wastewater with an anode. The electric chemical device comprises aclosed electrolytic cell, a power supply, a gas diffusion cathode, an anode, a circulation cooling device and an oxygen steel cylinder, wherein the gas diffusion cathode and the anode are connected with the power supply; an ionic exchange membrane which extends in a vertical direction is arranged inside the electrolytic cell and partitions the electrolytic cell into an anode chamber and a cathodearea; the anode is positioned in the anode chamber; the gas diffusion cathode is positioned in the cathode area and partitions the cathode area into a cathode chamber and a gas chamber; the cathode chamber is closed to the ionic exchange membrane; openings are formed in the tops of the anode chamber and the cathode chamber; the circulation cooling device comprises a condenser and a circulation pump which are sequentially connected through pipelines; both ends of the pipeline of the circulation cooling device each communicate with the cathode chamber; and the oxygen steel cylinder communicateswith the gas chamber through a pipeline. The device is small in size, easy to operate and high in security, and due to simultaneous operation of the cathode and the anode, the practicability of the device is improved, and the ideas of green and environment protection can be met.

Description

technical field [0001] The invention belongs to the fields of electrocatalysis, chemical industry and environmental protection, and in particular relates to an electrochemical device and method for generating hydrogen peroxide at the cathode while treating organic wastewater at the anode. Background technique [0002] hydrogen peroxide (H 2 o 2 ) is a chemical product with wide adaptability and various uses. It can be used as an oxidizing agent, bleaching agent, disinfectant, and dechlorination agent. It is widely used in chemical synthesis, textile printing and dyeing, pulp bleaching, military industry, electronics, medicine, food, and the environment. In various fields such as restoration, high-concentration hydrogen peroxide can be used as a liquid high-energy fuel and oxygen source. Hydrogen peroxide decomposition product is only H 2 O and O 2 , its excellent characteristics of cleanness, high efficiency and no pollution during use are in line with the current concep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/30C25B9/10C25B11/03C25B11/06C02F1/461C25B9/23
CPCC25B1/30C02F1/461C02F1/46109C02F2001/46142C25B9/23C25B11/061C25B11/031C25B11/095C25B11/051
Inventor 孙绍晖王少杰陈强蒋苏毓高健孙培勤韩一帆
Owner ZHENGZHOU UNIV
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