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Microbial fuel cell and method for enhancing discharge voltage of microbial fuel cell by using biochar

A fuel cell and discharge voltage technology, used in biochemical fuel cells, fuel cell components, fuel cell additives, etc., can solve problems such as elimination of organic substances, and achieve the effect of improving discharge voltage and facilitating large-scale application.

Inactive Publication Date: 2012-12-05
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biochar is a solid product obtained by pyrolysis of sludge or agricultural and forestry waste in an oxygen-deficient atmosphere. It has a good pore structure and can absorb organic matter in organic wastewater. However, this method only enriches and transfers organic matter, and does not Organic matter is completely eliminated

Method used

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  • Microbial fuel cell and method for enhancing discharge voltage of microbial fuel cell by using biochar

Examples

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Embodiment 1

[0020] A method utilizing biochar to enhance the discharge voltage of a microbial fuel cell, the method comprising the following steps:

[0021] ①Biochar preparation: In a nitrogen atmosphere, the heating rate is 10°C / min, the final temperature is 700°C, and the residence time is 2h, the sludge in the dehydration machine room of Guangzhou Municipal Sewage Plant is pyrolyzed, and then the sludge is heated at 850°C in a carbon dioxide atmosphere. °C, stay for 1 h for activation, and then pickle with 1.0 mol / L hydrochloric acid to obtain biochar.

[0022] ② Organic matter adsorption: Soak the biochar obtained in step ① in circulating domestic sewage for 8 hours to obtain biochar adsorbed with organic matter.

[0023] ③Preparation of anolyte solution: Mix the biochar adsorbed with organic matter obtained in step ② with domestic sewage at a solid-to-liquid mass ratio of 1:5, and adjust its pH to 7.0 with hydrochloric acid or sodium hydroxide to obtain an anolyte solution.

[0024]...

Embodiment 2

[0030] A method utilizing biochar to enhance the discharge voltage of a microbial fuel cell, the method comprising the following steps:

[0031] ①Biochar preparation: In a nitrogen atmosphere, the heating rate is 15°C / min, the final temperature is 600°C, and the residence time is 1.5h, the sludge in the dehydration machine room of Guangzhou Municipal Sewage Plant is pyrolyzed, and then under the carbon dioxide atmosphere, the Activate at 750°C for 1.5 hours, then pickle with 1.5mol / L hydrochloric acid to obtain biochar.

[0032] ② Organic matter adsorption: Soak the biochar obtained in step ① in circulating domestic sewage for 6 hours to obtain biochar with adsorbed organic matter.

[0033] ③ Preparation of anolyte electrode solution: Mix the biochar adsorbed with organic matter obtained in step ② with domestic sewage at a solid-to-liquid mass ratio of 1:4, and adjust its pH to 7.0 with hydrochloric acid or sodium hydroxide to obtain an anolyte electrode solution.

[0034] ④M...

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Abstract

The invention discloses a microbial fuel cell and a method for enhancing discharge voltage of the microbial fuel cell by using biochar. The microbial fuel cell comprises an anode electrode, anode electrode liquid and a cathode electrode, wherein the anode electrode liquid is organic wastewater containing biochar which adsorbs organic matters. The method comprises the following steps: configuring the microbial fuel cell, starting and running the microbial fuel cell, and treating the organic wastewater by using the microbial fuel cell, wherein the anode electrode liquid of the microbial fuel cell is the organic wastewater containing the biochar which adsorbs the organic matters. The organic matters in the organic wastewater are enriched in the biochar, and mixed liquid of the biochar and the organic wastewater is prepared as the anode electrode liquid of the microbial fuel cell, so that the discharge voltage of the microbial fuel cell can be improved, the problem that in the wastewater treatment process utilizing the microbial fuel cell, popularization on a large scale is difficult, and the large-scale application of the microbial fuel cell is facilitated.

Description

Technical field: [0001] The invention belongs to the field of microbial fuel cells, and in particular relates to a microbial fuel cell and a method for enhancing the discharge voltage of a microbial fuel cell by using biochar enrichment. Background technique: [0002] Organic wastewater microbial fuel cell treatment technology is a new environmental protection technology that uses microorganisms to oxidize organic matter to convert chemical energy into electrical energy. This technology is applied to the treatment of organic wastewater, which can realize the treatment of wastewater while recovering the energy in the wastewater, achieving the dual effects of environmental protection and energy utilization. At present, there are various patents related to microbial battery treatment of organic wastewater, such as "microbial fuel cell and its method for treating beer wastewater" (CN101145620), "microbial fuel cell device and battery and its usage and water treatment system" (CN...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/16C02F3/34H01M8/04298
CPCY02E60/527Y02E60/50
Inventor 袁浩然鲁涛赵丹丹陈勇黄宏宇小林敬幸
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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