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Microalgae biological direct-driven power generation battery

A technology of microalgae biology and batteries, which is applied in the direction of biochemical fuel cells, battery electrodes, fuel cell parts, etc., and can solve the problems of high cost and easy poisoning of metal electrodes

Active Publication Date: 2015-06-10
BEI JING NORMAL UNIV HONG KONG BAPTIST UNIV UNITED INT COLLEGE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN200910220037 discloses a green algae biofuel cell based on photosynthesis to generate electricity, which is an indirect method of green algae photolysis water hydrogen production system, while the hydrogen production of microalgae will be counter-inhibited by hydrogen and the high cost of metal electrodes, Toxic Restrictions
At present, there are relatively few research reports on fuel cells that directly generate electricity from microalgae.
However, the microalgae biological direct drive power generation battery disclosed in the present invention uses Chlorella pyrenoidosa as an anode electron donor to directly generate electricity by metabolizing carbohydrates in cells. The device technology and results of this electricity generation have not been seen. to report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1a As shown, the microalgae biological direct-driven power generation battery described in the first embodiment of the present invention includes an anode pool 1 with microalgae organisms inside and a cathode pool 2 adding an oxidant solution, separated by a proton exchange membrane 3 between the two pools , the anode 4 and the cathode 5 are respectively fixed inside the anode pool and the cathode pool, and are connected by an external circuit 6 . The microalgae in the anode pool are direct electron donors, through the metabolism of glucose, in the coenzyme NAD + Under the action of the electrons and protons, the generated protons are transferred to the cathode cell through the proton exchange membrane, and the generated electrons are transferred from the external circuit to the cathode through the electron transport chain, and combine with the oxidant hexacyanoferric ion in the cathode cell to form hexacyanide ferrous cyanide ion.

[0020] The microalg...

Embodiment 2

[0024] The microalgae direct drive power generation battery is the same as in Example 1, except that the oxygen absorber sodium sulfite (1 g / liter) is added to the anode pool, Figure 3a The oxygen absorber sodium sulfite (1 g / L) was added to the anode cell, and the cell density of Chlorella pyrenoidosa was 5.94 x 10 6 Cells / ml, under the conditions of light intensity of 2500 lux, 3500 lux, and 6500 lux respectively, the current produced by Chlorella pyrenoidosa, the current data are represented by mean ± standard error. When the illuminance was 2500 lux and 3500 lux, the initial current intensity was higher, and the achievable maximum values ​​were 70μA and 78μA, respectively, and stabilized at 60μA after 100min.

[0025] Figure 3b Add oxygen absorbent sodium sulfite (1 g / L) to the anode pool, and when the illuminance is 3500 lux, the cell density of Chlorella pyrenoidosa is 3.68×10 7 , 3.08x 10 7 , 1.39x 10 7 , 5.94x 10 6 Under the condition of cells / ml, the current pr...

Embodiment 3

[0027] The microalgae direct-driven power generation cell is the same as in Example 1, except that 1000 ppm RVT and 1000 ppm DNP or 20 ppm 4NA are added to the fuel cell. Figure 4a This is the current comparison graph under the condition of adding 1000ppm RVT and 1000ppmDNP and without adding RVT and DNP. After adding 1ml of 1000ppmDNP at 45min, the current increases from 3μA to 9μA. The same phenomenon occurs when 1ml of 1000ppmDNP is added at an interval of 30min. , after the third interval of 30min, add 1ml of 1000ppm RVT, the current increased from 3μA to 8μA; Figure 4b This is the voltage comparison graph under the condition of adding 20ppm 4-nitroaniline or not adding 4NA, in which the voltage of the microalgae battery added with 4NA started to increase at 30min, and stabilized at 38mV after 130min.

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Abstract

The invention relates to a microbial fuel battery, and in particular to a biological fuel battery which takes chlorella pyrenoidosa as an anode electron donor. The microalgae biological direct-driven power generation battery comprises an anode cell and a cathode cell, wherein the anode cell and the cathode cell are partitioned by a proton exchange membrane; the anode and the cathode are respectively fixed inside the anode cell and the cathode cell and are connected through an external resistor; microalgae are adopted as the electron donor of the anode; an ordinary cathode chemical or microalgae are adopted as the electron donor of the cathode. By adopting a microalgae direct power generation mode, the chemical energy can be converted into electric energy, that is, live microalgae are taken as the anode, power can be directly generated by metabolizing carbohydrate in cells without a substrate substance, and a novel biological fuel battery system can be provided.

Description

technical field [0001] The invention relates to a microbial fuel cell, in particular to a fuel cell using chlorella pyrenoidosa as an anode electron donor. Background technique [0002] Due to the shortage of petroleum resources, decreasing supply and increasing cost, finding alternative technologies for energy production has become a major interest in the research community. Over the years to explore alternative technologies for energy production, algae have been tried for energy alternative sources, but a large number of studies Data are focused on the extraction of algae bio-oil, which is used to synthesize biofuels. So far, the cost of extracting algal bio-oil is still high, and it cannot compete with petroleum fuels for the time being. According to the literature, microalgae have been used in microbial fuel cells, but microalgae are generally used as substrates that can be used by microorganisms on the anode plate, or microalgae are placed on the cathode as passive ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M8/02H01M4/96
CPCH01M4/86H01M8/02H01M8/16Y02E60/50
Inventor 潘玉琼王瑞华徐畅
Owner BEI JING NORMAL UNIV HONG KONG BAPTIST UNIV UNITED INT COLLEGE
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