Reverse electrodialysis coupled photocatalytic reactor and applications thereof

A catalytic reactor and reverse electrodialysis technology, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve unstable electricity production, complicated operation, microbial fuel cell start-up Slow and other problems, to achieve the effect of simple assembly and convenient sampling

Active Publication Date: 2018-09-18
BEIJING NORMAL UNIVERSITY
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, microbial fuel cells are slow to start, complicated to operate, unstable in power generation, and complex in configuration.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reverse electrodialysis coupled photocatalytic reactor and applications thereof
  • Reverse electrodialysis coupled photocatalytic reactor and applications thereof
  • Reverse electrodialysis coupled photocatalytic reactor and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this example 1, in order to test the degradation power generation efficiency of the coupled reactor, a 300W xenon lamp was used to irradiate, the distance between the light source and the photocatalytic electrode was set to 10cm, the logarithm of the membrane was 20, the concentration of concentrated ammonium bicarbonate was 1.8mol / L, and the light The concentration of ammonium bicarbonate is 0.01mol / L, and the volume of both is 1L. The influent flow rates of concentrated ammonium bicarbonate and light ammonium bicarbonate are both 50mL / min. The anode chamber contains 200mL of rhodamine B with a concentration of 10mg / L and 0.1mol / L sodium sulfate, and another 50mL of the mixed solution is stored in a graduated cylinder connected to the anode chamber, and circulates in the anode chamber through a peristaltic pump to avoid electrode contamination. Inner concentration polarization is also convenient for sampling. The cathode chamber contains 250 mL of water. A 1000Ω r...

Embodiment 2- Embodiment 5

[0051] Embodiment 2-embodiment 5, comparative example 1

[0052] Test according to the method of embodiment 1, only change the water inlet flow velocity of ammonium bicarbonate solution, specifically as table 1, Figure 4 , Figure 5 .

[0053] Table 1

[0054]

[0055] Figure 4 Show the comparison of the degradation efficiency of reverse electrodialysis coupled photocatalytic reactor of the present invention under different feed water flow rates with separate reverse electrodialysis and separate photocatalytic degradation efficiency; Figure 5 The power generation voltages of reverse electrodialysis alone, photocatalysis alone, and reverse electrodialysis coupled with photocatalysis at different flow rates are shown. Changing the water flow rate of the ammonium bicarbonate solution, the degradation and electricity production of the PRC system on rhodamine B are as follows: Figure 4 , Figure 5 shown. When the flow rate of ammonium bicarbonate solution was 25, 50, ...

Embodiment 6- Embodiment 9

[0058] Test according to the method of embodiment 1, only change the concentration of concentrated ammonium bicarbonate solution, specifically as table 2, Image 6 , Figure 7 .

[0059]

[0060] Image 6 Show the degradation efficiency of the reverse electrodialysis coupling photocatalytic reactor of the present invention under different concentrations of concentrated water; Figure 7 Show the output voltage of the reverse electrodialysis coupled photocatalytic reactor of the present invention under different concentrations of concentrated water; change the concentrated ammonium bicarbonate concentration, the degradation and electricity generation of the PRC system to rhodamine B are respectively as follows Image 6 , Figure 7 shown. When the concentrations of concentrated ammonium bicarbonate were 0.5, 1.0, 1.5, and 1.8 M, the degradation rates of PRC to rhodamine B after 2 hours were 21.3%, 22.9%, 24.2%, and 30.5%, respectively. When the concentrations of concentra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to a reverse electrodialysis coupled photocatalytic reactor, which comprises an anode chamber unit, a cathode chamber unit and a membrane stack unit, wherein the membranestack unit is fixed between the anode chamber unit and the cathode chamber unit through a screw. According to the present invention, with the reverse electrodialysis coupled photocatalytic reactor, the salt difference energy and the photocatalysis can be effectively compounded, the salt difference energy between concentrated ammonium hydrogen carbonate and diluent ammonium hydrogen carbonate is collected by the membrane stack unit formed by stacking the anion exchange membrane and the cation exchange membrane, and the generated electric energy is used as the bias voltage of the photocatalyticelectrode, wherein the ammonium hydrogen carbonate solution is easily decomposed due to being heating, such that the ammonium hydrogen carbonate solution can be extracted by using industrial waste heat so as to achieve recycling.

Description

technical field [0001] The invention relates to a photoelectric catalytic reactor, in particular to a double-chamber reactor which effectively combines salinity difference energy and light energy to degrade pollutants and simultaneously generates electricity. Background technique [0002] With the rapid development of industrialization, the impact of organic wastewater on the environment is increasing. Traditional water treatment methods consume a lot of energy, are incomplete, and have secondary pollution problems. Photocatalytic technology has strong oxidation ability, mild reaction conditions, and simple preparation, and has become one of the most potential water treatment technologies. [0003] The main problem of current photocatalytic technology is the high coincidence rate of photogenerated electrons and holes, which leads to low photocatalytic degradation efficiency and output power. In order to reduce the recombination of electron-hole pairs and improve the light ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F1/30C02F1/42C02F1/469C02F101/30
CPCC02F1/30C02F1/42C02F1/4693C02F2101/308C02F2201/007
Inventor 王颖田海龙
Owner BEIJING NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap