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Method for preparing multi-level pore carbon from lignin degrading bacteria-modified lotus leaves and application of multi-level pore carbon

A technology of lignin-degrading bacteria and lignin, which is applied in the field of preparation of multi-stage porous charcoal by modifying lotus leaves with lignin-degrading bacteria, can solve the problems of complex and long preparation process, consumption of templates and reagents, and increased cost, and achieve a good choice Adsorption performance, reduced corrosion, less environmental pollution effect

Pending Publication Date: 2018-05-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation method of hierarchical porous carbon materials is mainly the template method. The main process is to infuse the carbon precursor into the template materials such as inorganic materials or block copolymers with a hierarchical pore structure, and remove the template through high-temperature carbonization. The preparation of hierarchical porous carbon materials by this method is not only complicated and lengthy, but also consumes a large amount of templates and reagents, which increases the cost and causes secondary pollution, thus limiting its large-scale production and use.

Method used

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  • Method for preparing multi-level pore carbon from lignin degrading bacteria-modified lotus leaves and application of multi-level pore carbon
  • Method for preparing multi-level pore carbon from lignin degrading bacteria-modified lotus leaves and application of multi-level pore carbon
  • Method for preparing multi-level pore carbon from lignin degrading bacteria-modified lotus leaves and application of multi-level pore carbon

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Effect test

Embodiment 1

[0034] A method for preparing hierarchical porous charcoal by modifying lotus leaves with lignin-degrading bacteria, comprising the steps of:

[0035] (1) Dilute the freeze-dried powder of Phanerochaete chrysosporium 10000 times with sterilized deionized water, draw 0.1mL of the dissolved dry powder bacteria liquid with a pipette gun and inoculate it on the fungal PDA medium, spread it evenly, and put it in Cultivate in an incubator at 30°C for 6 days, then drop sterilized deionized water into the culture plate, gently stir with an inoculation needle, and filter with gauze to obtain a spore suspension of Phanerochaete chrysosporium, which is sealed and stored at 6°C in the refrigerator, set aside;

[0036] (2) cleaning the picked lotus leaves, drying them at 90°C, and cutting them into pieces of 0.5-1.5 cm to obtain pretreated lotus leaves;

[0037] (3) Take 200g of peeled potatoes, wash, cut into small pieces, add 1L of deionized water and boil for 30min to obtain the filtra...

Embodiment 2

[0043] A method for preparing hierarchical porous charcoal by modifying lotus leaves with lignin-degrading bacteria, comprising the steps of:

[0044] (1) Dilute the freeze-dried powder of Phanerochaete chrysosporium 10,000 times, inoculate the dissolved dry powder bacterial liquid on the fungal PDA medium, spread evenly, put it in an incubator and cultivate it at 30°C for 6 days, and then sterilize Deionized water was dropped into the cultured plate, stirred gently with an inoculation needle, and filtered with gauze, and the obtained spore suspension was introduced into an Erlenmeyer flask, sealed and stored in a refrigerator at 6°C, and set aside;

[0045] (2) cleaning the picked lotus leaves, drying them at 90°C, and cutting them into pieces of 0.5-1.5 cm to obtain pretreated lotus leaves;

[0046] (3) Take 200g of peeled potatoes, wash, cut into small pieces, add 1L of deionized water and boil for 30min to obtain the filtrate; make up the filtrate to 1L, then add glucose 2...

Embodiment 3

[0052] A method for preparing hierarchical porous charcoal by modifying lotus leaves with lignin-degrading bacteria, comprising the steps of:

[0053] (1) Dilute the freeze-dried powder of Phanerochaete chrysosporium 10,000 times, inoculate the dissolved dry powder bacterial liquid on the fungal PDA medium, spread evenly, put it in an incubator and cultivate it at 30°C for 6 days, and then sterilize Deionized water was dropped into the cultured plate, stirred gently with an inoculation needle, and filtered with gauze, and the obtained spore suspension was introduced into an Erlenmeyer flask, sealed and stored in a refrigerator at 6°C, and set aside;

[0054] (2) cleaning the picked lotus leaves, drying them at 90°C, and cutting them into pieces of 0.5-1.5 cm to obtain pretreated lotus leaves;

[0055] (3) Take 200g of peeled potatoes, wash, cut into small pieces, add 1L of deionized water and boil for 30min to obtain the filtrate; make up the filtrate to 1L, then add glucose 2...

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Abstract

The invention belongs to the technical field of adsorbents, and discloses a method for preparing multi-level pore carbon from lignin degrading bacteria-modified lotus leaves and application of the multi-level pore carbon. The method comprises the following steps of: (1) pretreating lotus leaves; (2) introducing the pretreated lotus leaves and suspension of lignin degrading bacterial spores into aliquid medium, performing oscillation at a constant temperature of 25-35 DEG C for 3-10 days for cultivation, and performing filtration, washing and drying to obtain microorganism-treated lotus leaves; and (3) performing carbonization treatment on the microorganism-treated lotus leaves at 600-1000 DEG C, and conducting activation treatment in an atmosphere of water vapor to obtain the multi-levelpore carbon. According to the method, the lotus leaves are adopted as a self-template material, so that the lotus leaves are utilized effectively; the method has a simple preparation process and low production cost, and is environmentally friendly, and compared with other activated carbon, the obtained multi-level pore carbon material has better pore size distribution, better selective adsorptionperformance and greater adsorption capacity.

Description

technical field [0001] The invention belongs to the technical field of adsorbents, and relates to a method for preparing hierarchical porous charcoal by modifying lotus leaves with lignin-degrading bacteria and the hierarchical porous charcoal and its application. It is used as a VOCs adsorbent after deactivation. Background technique [0002] Volatile organic compounds (VOCs) as O 3 , PM2.5 and one of the key precursors of atmospheric compound pollution, its effective control and reduction play a vital role in improving my country's air quality. Adsorption technology is one of the most widely used treatment technologies for low-concentration VOCs, and the adsorbent is the key to the adsorption technology. Hierarchical porous carbon materials are considered to be a new type of adsorption material with great potential. Compared with single-level porous carbon materials, the hierarchical porous structure is conducive to the rapid diffusion of reactants or products. The subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/708B01J20/20B01J20/28054B01J2220/4837B01J2220/4843
Inventor 黄皓旻张伟霞叶代启
Owner SOUTH CHINA UNIV OF TECH
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