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A method for constructing a plant-microbe fuel cell

A fuel cell and microorganism technology, applied in the field of plant-microbial fuel cells, can solve problems such as affecting the power generation performance of P-MFC

Active Publication Date: 2020-10-27
ENVIRONMENTAL HORTICULTURE RES INST OF GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How these factors affect the power generation performance of P-MFC remains to be further studied

Method used

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  • A method for constructing a plant-microbe fuel cell
  • A method for constructing a plant-microbe fuel cell
  • A method for constructing a plant-microbe fuel cell

Examples

Experimental program
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Embodiment 1

[0029] An embodiment of a method for constructing a plant microbial fuel cell according to the present invention, the method described in this embodiment comprises the following steps:

[0030] (1) Preparing the matrix: take the soil below 50 cm depth from the riverside wetland, air-dry it, and grind it through a 100-mesh sieve to obtain the matrix.

[0031] (2) Plant materials and propagation and cultivation: Four plants, namely Panicum paludosum, Cyperus malaccensis var. brevifolius, Pycreus polystachyus and Paspalumpaspaloides, were selected as experimental materials. About 15-20cm healthy stem section or seedling with buds, put it in a plastic bucket with sandy soil and organic matter content of 0.9% for rooting and culture, take it out after 2 weeks, wash the root system and transfer it to the substrate in step (1) grown in plastic pots.

[0032] (3) Construct a single-chamber air-cathode P-MFC without an ion-exchange membrane: use a Φ21cm high 20cm black plastic drum as...

Embodiment 2

[0047] The method of this embodiment is the same as that of Embodiment 1 except that the cathode and anode electrodes in step (3) are made of platinum-containing catalyst composite material, and the wire is copper wire.

[0048] The result of this embodiment is similar to that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0050] The method of this embodiment is the same as that of Embodiment 1 except that the cathode and anode electrodes in step (3) are made of carbon cloth, and the wires are silver wires.

[0051] The result of this embodiment is similar to that of Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to a method for constructing an efficient plant-microbial fuel cell. The method comprises the steps of constructing a single-chamber air negative electrode without ion exchange membrane, taking an output voltage as an evaluation index for electricity generation performance, and measuring parameter indexes related to the output voltage: such as electrode potential, output voltage, negative electrode region pH value, negative electrode region dissolved oxygen concentration, environment temperature, plant root system porosity and oxygen loss rate; by performing analysis on correlation between various parameter indexes and the output voltage, screening out the environment condition and plant type suitable for constructing the efficient plant-microbial fuel cell. Accordingto the method, by performing analysis on correlation between different influence factors and the electricity generation performance, the plant types and environment conditions suitable for construction are determined: comprising low plant root system oxygen loss rate, suitable environment temperature for growth, low level of the negative electrode region pH value, and high negative electrode region dissolved oxygen concentration; and by selecting the regulation and control means, construction of the efficient plant-microbial fuel cell is realized.

Description

technical field [0001] The invention relates to the field of plant-microbe fuel cells, in particular to a method for plant-microbe fuel cells. Background technique [0002] The global energy crisis and environmental problems are intensifying, and the search and development of green, efficient and renewable new energy has attracted widespread attention from all over the world. Microbial fuel cell (MFC) is a new type of clean energy technology that can both deal with environmental pollution and generate electricity. It uses microorganisms as catalysts to metabolize environmental substances (organic and some inorganic substances), release electrons, and The external circuit realizes the conversion of chemical energy into electrical energy. Plant-microbial fuel cell (P-MFC) is a new type of fuel cell that introduces plants into microbial fuel cells. It uses root exudates produced by plant photosynthesis as electron donors for soil electricity-producing microorganisms. Solar en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/16
CPCH01M8/16Y02E60/50
Inventor 刘海林陈金峰邹春萍孙映波张佩霞于波黄丽丽
Owner ENVIRONMENTAL HORTICULTURE RES INST OF GUANGDONG ACADEMY OF AGRI SCI
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