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Algous cathodal double-chamber microbiological fuel cell and application thereof

A fuel cell and microbial technology, applied in the algae cathode double-chamber microbial fuel cell and its application field, can solve the problems such as the limitation of cathode electricity production, and achieve the effects of reducing processing costs, good economic benefits and application prospects

Inactive Publication Date: 2010-06-30
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In order to solve the problem of the limitation of the cathode to electricity production in the microbial fuel cell, the present invention provides an algae cathode dual-chamber microbial fuel cell and its application, in which cyanobacteria in eutrophic water bodies are directly added to the cathode of the dual-chamber microbial fuel cell, so that While the biofuel cell performs the function of generating electricity, blue-green algae can also be effectively utilized

Method used

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  • Algous cathodal double-chamber microbiological fuel cell and application thereof
  • Algous cathodal double-chamber microbiological fuel cell and application thereof

Examples

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Effect test

Embodiment 1

[0025] The anode chamber 3 of the dual-chamber microbial fuel cell is inoculated with anaerobic granular sludge to allow electrogenic bacteria to attach to the anode 2 . Add electrode solution (containing NaH 2 PO 4 .2H 2 O 5.6g / L, Na 2 HPO 4 .12H 2 O 6.07g / L, NH 4 Cl 310mg / L, KCl 130mg / L and trace elements). Sodium acetate was used as the simulated wastewater carbon source, and was added to the anode chamber 3 to make the initial COD 1000mg / L. Add algae samples (mainly containing Microcystis and Chlorella) in the eutrophic lake to the cathode chamber 5, so that the chlorophyll content of the suspended algae in the electrode solution in the cathode chamber 5 is 1 mg / L. The light intensity is 2000lx. In the stable power generation period, the maximum voltage drop of the battery on an external 1000Ω resistor is 221mV, and the power density is 9.77mW / m 2 . The anode COD degradation rate can reach 100%.

Embodiment 2

[0027] The anode chamber 3 of the dual-chamber microbial fuel cell is inoculated with anaerobic granular sludge to allow electrogenic bacteria to attach to the anode 2 . Add electrode solution (containing NaH 2 PO 4 .2H 2 O 5.6g / L, Na 2 HPO 4 .12H 2 O 6.07g / L, NH 4 Cl 310mg / L, KCl 130mg / L and trace elements). Sodium acetate was used as the simulated wastewater carbon source, and was added to the anode chamber 3 to make the initial COD 1000mg / L. Add the Microcystis suspension into the cathode chamber 5, so that the chlorophyll content of the suspended Microcystis in the electrode solution in the cathode chamber 5 is 1 mg / L. The light intensity is 2000lx. In the stable power generation period, the maximum voltage drop of the battery on an external 1000Ω resistor is 199mV, and the power density is 7.92mW / m 2 . The anode COD degradation rate can reach 100%.

Embodiment 3

[0029] The anode chamber 3 of the dual-chamber microbial fuel cell is inoculated with anaerobic granular sludge to allow electrogenic bacteria to attach to the anode 2 . Add electrode solution (containing NaH 2 PO 4 .2H 2 O 5.6g / L, Na 2 HPO 4 .12H 2 O 6.07g / L, NH 4Cl 310mg / L, KCl 130mg / L and trace elements). Sodium acetate was used as the simulated wastewater carbon source, and was added to the anode chamber 3 to make the initial COD 1000mg / L. The chlorella suspension is added to the cathode chamber 5, so that the chlorophyll content of the suspended chlorella in the electrode solution of the cathode chamber 5 is 1 mg / L. The light intensity is 2000lx. In the stable power generation period, the maximum voltage drop of the battery on an external 1000Ω resistor is 208mV, and the power density is 8.65mW / m 2 . The anode COD degradation rate can reach 100%.

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Abstract

The invention discloses an algous cathodal double-chamber microbiological fuel cell and application thereof, which belong to the field of biological cells. The double-chamber microbiological fuel cell comprises an anodal chamber and a cathodal chamber, in which electrolyte is loaded. The anodal chamber is inoculated with anaerobic sludge, and the cathodal chamber is inoculated with blue-green algae and irradiated by a light source. The algae are suspended in the cathodal electrolyte, the biomass of the algae is far more than the biomass of the algae attached on the electrode, and thereby the photosynthesis of the algae can be utilized to release more oxygen. While having the function of treating anodal waste water, the invention also can directly utilize a large quantity of blue-green algae and the like in eutrophic water body, consequently, the treatment cost is greatly reduced, pretreatment is not needed, and therefore the invention has good economic benefit and application prospect.

Description

technical field [0001] The invention relates to a microbial fuel cell and its application, more specifically to an algae cathode double-chamber microbial fuel cell and its application. Background technique [0002] With the worldwide industrial development and population growth, the energy crisis is becoming more and more serious. Existing methods of power generation, such as coal-fired, hydraulic, wind, solar, and nuclear power generation, have disadvantages that are difficult to overcome, such as the reduction of mineral deposits, the continuity of electricity production, and the difficulty of collecting electricity. [0003] At present, microbial fuel cells (microbial fuel cells) represent the newest way of generating electricity - using bacteria to oxidize organic matter to generate electricity. Its working principle is a bioelectrochemical device that directly converts the chemical energy of fuel (organic matter) into electrical energy by using the catalysis of microor...

Claims

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Application Information

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IPC IPC(8): H01M8/16C02F3/34
CPCY02E60/527Y02W10/33Y02W10/37Y02E60/50
Inventor 丁丽丽张丽彬符波任洪强
Owner NANJING UNIV
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