Preparation method and application of waste bacteria stick carbon anode

A technology of waste bacteria sticks and carbon anodes, which is applied in battery electrodes, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of occupying a large amount of land, environmental pollution, etc., achieves improved power density, simple preparation method, and is suitable for The effect of large-scale industrial production

Active Publication Date: 2019-11-26
FUJIAN AGRI & FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current production of edible fungi generally adopts the factory production method, which has a large scale. After the production is over, there will be a lot of cultivation waste - waste mushroom sticks. If it is not disposed of in time, it will occupy a lot of land and cause pollution to the environment.
Although the nutrients that can be used by the cultivated fungi have been exhausted, the spent bacteria sticks still contain a lot of crude fiber and crude protein

Method used

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  • Preparation method and application of waste bacteria stick carbon anode
  • Preparation method and application of waste bacteria stick carbon anode
  • Preparation method and application of waste bacteria stick carbon anode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The waste bacteria rod carbon anode is prepared from the waste bacteria rod of seafood mushroom, and the specific steps are as follows:

[0025] (1) Dry the waste seafood mushroom sticks at 60 °C until the moisture content is ≤10%, and crush them to 60 mesh;

[0026] (2) Take 3g of the sieved waste seafood mushroom stick powder and place it in a stainless steel mold with an inner diameter of 3cm, and use a tablet machine to roll it into tablets at 10 and 20 MPa respectively;

[0027] (3) Place the pellets in a tube furnace for anaerobic high-temperature carbonization at 900 °C for 2 h to obtain the carbon anode of spent seafood mushroom sticks.

[0028] The preparation process of this embodiment is shown in figure 1 , the color of the fungus stick powder was loess color before the experiment, and the color turned black after the tablet was carbonized, and the tablets were well formed, and there was no fragmentation after carbonization.

[0029] The electron micrograph...

Embodiment 2

[0031] The waste fungus stick carbon anode was prepared from waste fungus sticks and coconut shells, and the specific steps were as follows:

[0032] (1) Dry the waste Tremella fungus sticks at 60 °C until the moisture content is below 10%, and crush them to 80 mesh;

[0033] (2) Cut the coconut shell into 5.0 cm × 1.5 cm × 0.5 cm, dry it at 60°C until the moisture content is below 10%, and crush it to an 80-mesh sieve;

[0034] (3) Mix the sifted white fungus waste fungus stick powder and coconut shell powder at a mass ratio of 0, 10%, and 20%, take 3g of the mixture and place it in a stainless steel mold with an inner diameter of 3cm, and use a tablet press at 20MPa Rolled down into pieces;

[0035] (4) Place the pellets in a tube furnace for anaerobic high-temperature carbonization at 800 °C for 3 h to obtain carbon anodes of three types of waste Tremella fungus sticks.

Embodiment 3

[0037] The application of different waste bacteria stick carbon anodes in microbial fuel cells is as follows:

[0038] (1) Construction of a single-chamber microbial fuel cell:

[0039] The battery chamber is a cuboid plexiglass measuring 6 cm × 6 cm × 4 cm, and a cylinder with a diameter of 3 cm and a height of 4 cm is hollowed out in the middle, and the internal effective volume is 28 mL.

[0040] The negative electrode is platinum-loaded carbon cloth, and its production process is as follows: first, the carbon cloth is subjected to 30% PTFE hydrophobization treatment, then one side is coated with a carbon base layer, and the other side is coated with 4 layers of PTFE air diffusion layer, and finally the diffusion layer The opposite side of the layer is coated with a platinum catalyst layer, the amount of platinum is 0.5 mg / m 2 , circular shape with an effective area of ​​7 cm 2 (diameter 3 cm), with air as the cathode electron acceptor.

[0041] The anodes were respectiv...

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Abstract

The invention discloses a preparation method of a waste bacterial rod carbon anode and application thereof in a microbial fuel cell. Compared with a traditional carbon brush anode, the maximum power density of the waste bacterial rod carbon anode can be improved by more than one time; the preparation method of the waste bacterial rod carbon anode is simple, a complex hydrochloric acid immersion cleaning step is omitted, the cost of raw materials is low, the waste bacterial rod carbon anode is suitable for large-scale commercial process, and a bran-new application mode is provided for resource utilization of waste bacterial rods.

Description

technical field [0001] The invention belongs to the field of resource utilization of waste edible mushroom sticks, and more specifically relates to a preparation method and application of a carbon anode of waste mushroom sticks. Background technique [0002] The current production of edible fungi generally adopts the factory production method, which has a large scale. After the production is over, there will be a large amount of cultivation waste - waste mushroom sticks. If it is not disposed of in time, it will occupy a large amount of land and cause pollution to the environment. Although the nutrients that can be used by the cultivated fungi have been exhausted, the spent bacteria sticks still contain a large amount of crude fiber and crude protein. Therefore, waste bacteria sticks have the potential of resource transformation. [0003] At present, there are three main methods of resource utilization of waste bacteria sticks: one is to make fertilizers, and the difficult-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/96H01M4/88H01M8/16
CPCH01M4/88H01M4/96H01M8/16Y02E60/50Y02P70/50
Inventor 陈姗姗靖宪月唐家桓周顺桂
Owner FUJIAN AGRI & FORESTRY UNIV
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