Method of starting microbial fuel cell by adding inoculum to treat cow dung fermentation biogas slurry

A fuel cell and microbial technology, applied in the environmental field, can solve the problems of microbial fuel cells such as long time, unsatisfactory treatment effect, unstable output voltage, etc., achieve short start-up reactor time, short start-up time, and increase output power Effect

Active Publication Date: 2017-01-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of unsatisfactory and unsafe treatment of the biogas slurry produced by the traditional anaerobic fermentation method, as well as the disadvantages of directly starting the microbial fuel cell for a long time and unstable output voltage, and to provide a method by Adding inoculum to start microbial fuel cell to process cow dung fermentation biogas slurry method

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  • Method of starting microbial fuel cell by adding inoculum to treat cow dung fermentation biogas slurry
  • Method of starting microbial fuel cell by adding inoculum to treat cow dung fermentation biogas slurry
  • Method of starting microbial fuel cell by adding inoculum to treat cow dung fermentation biogas slurry

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specific Embodiment approach 1

[0023] Specific embodiment one: the method for processing cow dung fermentation biogas slurry by adding inoculum to start the microbial fuel cell of the present embodiment is carried out according to the following steps:

[0024] 1. Prepare the culture medium for feeding into the microbial fuel cell reactor: add 0.1-10g / L sodium acetate, 0.1-10ml / L vitamin solution, 0.1-15ml / L mineral element solution and COD to 200-5000mg / L respectively The fermented biogas slurry of cow dung is added into the container according to the ratio of (30-50): (0.8-1.2): (2-3): (150-170) in parts by weight to obtain the prepared medium;

[0025] 2. Add the prepared medium into the microbial fuel cell reactor, and connect the reference electrode on the anode of the microbial fuel cell; at the initial stage of starting the microbial fuel cell, inoculate the inoculum at an inoculation amount of 1%-20%. In the reactor of microbial fuel cell;

[0026] 3. Use a wire to connect a 500-1000Ω resistor betwe...

specific Embodiment approach 2

[0029] Specific embodiment two: the difference between this embodiment and specific embodiment one is that described in step one, respectively 2-8g / L sodium acetate, 2-8ml / L vitamin solution, 2-10ml / L mineral element solution and COD are 500-1500mg / L cow dung fermentation biogas slurry is added into the container at the ratio of 40:1:2.5:156.4 by weight to obtain the prepared medium. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0030] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the anode of the microbial fuel cell is a carbon brush made of carbon fibers; / cm 2 Pt catalyst. Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention discloses a method of starting a microbial fuel cell by adding inoculum to treat cow dung fermentation biogas slurry, relates to the field of environment, biology, energy resources and electrochemistry, in particular to a method of quickly starting the microbial fuel cell and treating the cow dung biomass slurry to generate power and aims to overcome the defect that conventional anaerobic fermentation methods are long in starting period and incapable of completely treating biomass slurry. The method includes following steps: 1, preparing a microbial fuel cell culture medium for adding; 2, adding the culture medium into the microbial fuel cell, and inoculating the inoculum (activated sludge and domestic sewage) to the microbial fuel cell; utilizing a lead to connect a resistor of 500-1000Omega to a cathode and an anode of the microbial fuel cell to form a closed loop, and connecting the lead with the resistor and a multichannel data collection card; 4, replacing the culture medium to start the microbial fuel cell, and comparing influence of adding of the inoculum on the microbial fuel cell.

Description

technical field [0001] The invention relates to the fields of environment, biology, energy and electrochemistry. Specifically, the invention relates to a method for generating electricity by treating cow dung fermentation biogas liquid with a microbial fuel cell. Background technique [0002] Biogas slurry refers to the fermentation product left over from the biogas project used for intensive livestock and poultry farm manure and livestock sewage treatment. At the same time, biogas slurry is a kind of organic wastewater that is difficult to degrade. If it is not properly disposed of and discharged at will, it will cause serious pollution to the environment that is difficult to recover. At present, the development and utilization of biogas slurry resources in my country is still immature, and most of them focus on returning crops to fields, feed additives for aquaculture, and restoring wetlands. Anaerobic fermentation is mostly used to treat biogas slurry, but the compositi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/28H01M8/16
CPCC02F3/005C02F3/28H01M8/16Y02E50/30Y02E60/50
Inventor 梁恒谢冰涵公维佳丁安唐小斌王美莲李圭白
Owner HARBIN INST OF TECH
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