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Device capable of producing hydrogen peroxide and application of device

A technology for producing hydrogen peroxide and hydrogen peroxide, applied in the field of oxidants, can solve the problems of high energy consumption, small partial pressure, increase the production cost of hydrogen peroxide, etc., and achieve the effect of saving energy consumption

Active Publication Date: 2019-04-16
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] And using this system to produce H 2 o 2 , the cathode O 2 There are two main ways to obtain: one is to use gas diffusion cathode, using O in the air 2 As the cathode electron acceptor, the disadvantage of this method is that the O in the air 2 Partial pressure is small, O 2 Diffusion to the cathode three-phase reaction interface is slow, severely limiting the H 2 o 2 The other is continuous aeration in the cathode chamber, which generally requires a larger O 2 Or air flow to ensure sufficient dissolved oxygen (DO) concentration, requires additional high energy consumption, thereby increasing the production cost of hydrogen peroxide (the cost of aeration is generally 15 yuan / m 3 d)
[0010] Therefore, microbial electrocatalysis in H 2 o 2 There are major obstacles in the application of production

Method used

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  • Device capable of producing hydrogen peroxide and application of device
  • Device capable of producing hydrogen peroxide and application of device
  • Device capable of producing hydrogen peroxide and application of device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] Specific steps are as follows:

[0127] according to figure 1 , With carbon brush (length 45cm, diameter 15cm) as anode, cation exchange membrane (20cm×50cm) as separation membrane, and carbon black-polytetrafluoroethylene (PTFE) gas diffusion cathode as cathode (20cm×50cm), The volume of the anode chamber and the cathode chamber are both 20L (20cm×20cm×50cm), the volume of the microalgae growth chamber is 30L (20cm×30cm×50cm), and the distance between the cathode and anode is 10cm;

[0128] Pass the PBS buffer (50mM) containing 1g / L sodium acetate into the anode compartment through the third water inlet, and the Na 2 SO 4 The solution (50mM) is passed into the cathode chamber through the second water inlet, and the pig farm wastewater (COD2257mg / L, NH 4 + -N789mg / L, TN910mg / L, TP85mg / L) pass the first water inlet into the microalgae growth chamber to obtain the hydrogen peroxide reaction system; inoculate Chlorella vulgaris in the pig farm wastewater, and inoculate the initi...

Embodiment 2

[0132] Specific steps are as follows:

[0133] according to figure 1 , Graphite felt (20cm×50cm) as anode, cation exchange membrane (20cm×50cm) as separation membrane, carbon black-polytetrafluoroethylene (PTFE) gas diffusion cathode as cathode (20cm×50cm), anode compartment The volume of the cathode chamber and the cathode chamber is 20L (20cm×20cm×50cm), the volume of the microalgae growth chamber is 30L (20cm×30cm×50cm), and the distance between the anode and cathode is 10cm;

[0134] Pass the PBS buffer (50mM) containing 1g / L glucose into the anode compartment through the third water inlet, and the Na 2 SO 4 The solution (50mM) was passed into the cathode chamber through the second water inlet, and the microalgae culture medium was passed into the microalgae growth chamber through the first water inlet to obtain the hydrogen peroxide reaction system; the microalgae culture solution was inoculated with Scenedesmus obliquus (Scenedesmusobliquus), the initial concentration of inoc...

Embodiment 3

[0138] Specific steps are as follows:

[0139] according to figure 1 , Graphite felt (20cm×50cm) as anode, cation exchange membrane (20cm×50cm) as separation membrane, carbon black-polytetrafluoroethylene (PTFE) gas diffusion cathode as cathode (20cm×50cm), anode compartment The volume of the cathode chamber and the cathode chamber is 20L (20cm×20cm×50cm), the volume of the microalgae growth chamber is 30L (20cm×30cm×50cm), and the distance between the anode and cathode is 10cm;

[0140] Pass the PBS buffer (50mM) containing 1g / L sodium acetate into the anode compartment through the third water inlet, and the Na 2 SO 4 The solution (50mM) was passed into the cathode chamber through the second water inlet, and the microalgae culture medium BG-11 was passed into the microalgae growth chamber through the first water inlet to obtain the hydrogen peroxide reaction system; Nannochloropsissp., the initial concentration of inoculation is 5×10 6 cell / mL, turn on the light source (consisting...

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Abstract

The invention discloses a device capable of producing hydrogen peroxide and application of the device, and belongs to the technical field of oxidants. According to the device, O2 can be provided for cathode reaction by using microalgae photosynthesis to achieve the production of the hydrogen peroxide, external aeration is not needed, the energy consumption is reduced, and microalgae production canbe achieved by the device. By producing the hydrogen peroxide for 8 days by using the device, the oil yield can be allowed to reach up to 656 mg / L d in a microalgae growing chamber, the accumulationconcentration of H2O2 in a cathode chamber is 180 mg / L, the effect is excellent, and the application prospects are wide.

Description

Technical field [0001] The invention relates to a device which can be used for producing hydrogen peroxide and its application, and belongs to the technical field of oxidants. Background technique [0002] Hydrogen peroxide (H 2 O 2 ) Has strong oxidizing properties, only produces oxygen and water after decomposition, and has no secondary pollution. It is an ideal green oxidant. It is widely used in the fields of textiles, printing and dyeing, pulp bleaching, food disinfection and chemical synthesis. In 2017 alone, my country’s H 2 O 2 The output (calculated at 27.5%) reached 830,000 tons, an increase of 5.48% year-on-year. [0003] Currently, H 2 O 2 The production methods mainly include isopropanol automatic oxidation method, oxygen cathode reduction method, direct hydrogen synthesis method and anthraquinone method. Among them, the anthraquinone method is the domestic and foreign industrial production H 2 O 2 The main process. [0004] However, because the anthraquinone method nee...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12N1/12C02F3/00C02F3/34C02F3/28C02F3/32C25B1/30C25B9/08C25B9/19
CPCC12M21/02C12M31/02C12M43/00C12N1/12C25B1/30C02F3/005C02F3/28C02F3/322C02F3/34C25B9/19
Inventor 任月萍王悦李秀芬王新华
Owner JIANGNAN UNIV
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