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A preparation method and application of three-dimensional porous biochar derived from cones

A three-dimensional porous and biochar technology, applied in the fields of energy, environment, and materials, can solve problems such as general biocompatibility, limited power density, and small specific surface area, and achieves simple and easy methods, high voltage and power density, and biological good compatibility

Active Publication Date: 2022-02-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current commercial materials usually have a small specific surface area, so the biomass that can be loaded is low; the biocompatibility is average, so the start-up is slow; the impedance is large, so the power density is limited to a certain extent

Method used

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  • A preparation method and application of three-dimensional porous biochar derived from cones
  • A preparation method and application of three-dimensional porous biochar derived from cones
  • A preparation method and application of three-dimensional porous biochar derived from cones

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Clean up the sundries on the surface of the collected pine cones and dry them at room temperature for 12 h.

[0028] (2) Put the dried pine cones into a tube furnace, raise the temperature to 800°C at a rate of 1.5°C / min in a nitrogen atmosphere, maintain it for 2 hours, then cool it down to room temperature naturally, and take it out to obtain a three-dimensional porous organism carbon material.

[0029] (3) The three-dimensional porous biochar material was washed several times in water and ethanol solution, and it was wound with titanium wire as the MFC anode material. Limitations of battery configuration and anolyte.

Embodiment 2

[0031] The difference between this example and Example 1 is that the cleaned cones are dried in vacuum for 30 minutes, the dried cones are placed in a tube furnace, and the temperature is raised at a heating rate of 1.5°C / min under a nitrogen atmosphere. Keep it at 900°C for 4 hours, then cool it down to room temperature naturally and take it out.

Embodiment 3

[0033] The difference between this embodiment and embodiment 1 is that the heating rate is 5° C. / min.

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Abstract

The invention discloses a method for preparing three-dimensional porous biochar derived from cones and its application. The method for preparing three-dimensional porous biochar includes the following steps: (1) cleaning up the debris on the surface of the collected cones , and then dried; (2) The dried cones were subjected to high-temperature heat treatment and carbonization in an inert gas atmosphere to form multi-heteroatom-doped biochar. The three-dimensional porous biochar derived from cones prepared by the above method can be used as an anode for microbial fuel cells. According to the invention, the multi-heteroatom-doped porous biochar with a three-dimensional independent structure is obtained by simple heat treatment and carbonization of the cork in an inert atmosphere. As an independent anode, porous biochar derived from cones can quickly start microbial fuel cells, and can obtain significantly higher voltage and power densities than commercial three-dimensional materials, and it has a wide range of sources, low prices, simple preparation methods, and quantifiable production.

Description

technical field [0001] The invention belongs to the fields of environment, materials and energy, and relates to a preparation method of three-dimensional porous biochar and its application as a microbial fuel cell anode. Background technique [0002] With the development of modern society, we are producing more and more waste water. However, the traditional sewage treatment process is a process of high energy consumption. At the same time, a large amount of chemical energy is stored in the organic matter of the wastewater. If the energy in the wastewater can be recycled, it will have both economic and ecological benefits. Microbial fuel cell (MFC) is an emerging technology capable of regenerating wastewater into energy. Microbes use organic matter to generate electrons, which are driven by the potential difference through the external circuit to the cathode to generate current. The anode material is the most important part of the MFC. There is a complex interaction between...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05H01M4/86H01M4/88
CPCY02E60/50
Inventor 颜美王睿文果崇申
Owner HARBIN INST OF TECH
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