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Method for preparing mycelium/molybdenum oxide adsorption-catalytic material by utilizing biological enrichment

A catalytic material and bioconcentration technology, applied in the field of adsorption-catalytic material preparation, can solve the problems of wide band gap, limited catalytic reduction ability, uranium occupancy, etc.

Active Publication Date: 2020-08-18
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalytic reduction ability of traditional semiconductor photocatalysts is still limited by their wide band gap (weak visible light absorption) and large electron-hole recombination rate.
In addition, the active sites on a single semiconductor material are limited and are easily occupied by the reduction products of uranium, thereby affecting the continuous progress of photocatalytic reduction.

Method used

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  • Method for preparing mycelium/molybdenum oxide adsorption-catalytic material by utilizing biological enrichment
  • Method for preparing mycelium/molybdenum oxide adsorption-catalytic material by utilizing biological enrichment
  • Method for preparing mycelium/molybdenum oxide adsorption-catalytic material by utilizing biological enrichment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for preparing hyphae / molybdenum oxide adsorption-catalytic material by bio-enrichment, comprising the following steps:

[0038] Step 1. Take 100g of glucose, 12.5g of yeast extract powder, 12.5g of peptone, and 5L of deionized water, mix them, and maintain them for 20 minutes under the conditions of steam pressure of 103.4kPa and temperature of 120°C for sterilization to obtain sterilized liquid medium;

[0039] Step 2: Add 120mL of liquid culture medium to the culture container, then add 0.1g of the fungal strain Xylocarpus, shake and cultivate at a temperature of 28°C and a speed of 180rpm. When the diameter of the fungal mycelium in the liquid culture medium grows to 1cm diameter, add 20 mL of 50 g / L ammonium molybdate solution in an amount of 5 mL per day, and continue to cultivate for 1 day. After the cultivation, the solid matter is taken out and washed with deionized water to neutrality, and then freeze-dried; the freeze-dried It includes two stages, re...

Embodiment 2

[0042] A method for preparing hyphae / molybdenum oxide adsorption-catalytic material by bio-enrichment, comprising the following steps:

[0043] Step 1. Take 100g of glucose, 12.5g of yeast extract powder, 12.5g of peptone, and 5L of deionized water, mix them, and maintain them for 20 minutes under the conditions of steam pressure of 103.4kPa and temperature of 120°C for sterilization to obtain sterilized liquid medium;

[0044] Step 2: Add 120mL of liquid culture medium to the culture container, then add 0.1g of the fungal strain Xylocarpus, shake and cultivate at a temperature of 28°C and a speed of 180rpm. When the diameter of the fungal mycelium in the liquid culture medium grows to 1cm diameter, add 20 mL of 50 g / L ammonium molybdate solution in an amount of 5 mL per day, and continue to cultivate for 1 day. After the cultivation, the solid matter is taken out and washed with deionized water to neutrality, and then freeze-dried; the freeze-dried It includes two stages, re...

Embodiment 3

[0047] A method for preparing hyphae / molybdenum oxide adsorption-catalytic material by bio-enrichment, comprising the following steps:

[0048] Step 1. Take 100g of glucose, 12.5g of yeast extract powder, 12.5g of peptone, and 5L of deionized water, mix them, and maintain them for 20 minutes under the conditions of steam pressure of 103.4kPa and temperature of 120°C for sterilization to obtain sterilized liquid medium;

[0049] Step 2: Add 120mL of liquid culture medium to the culture container, then add 0.1g of the fungal strain Xylocarpus, shake and cultivate at a temperature of 28°C and a speed of 180rpm. When the diameter of the fungal mycelium in the liquid culture medium grows to 1cm diameter, add 20 mL of 50 g / L ammonium molybdate solution in an amount of 5 mL per day, and continue to cultivate for 1 day. After the cultivation, the solid matter is taken out and washed with deionized water to neutrality, and then freeze-dried; the freeze-dried It includes two stages, re...

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Abstract

The invention discloses a method for preparing a mycelium / molybdenum oxide adsorption-catalytic material by utilizing biological enrichment. The method comprises the following steps: preparing a liquid culture medium; adding the liquid culture medium into a culture container, inoculating a fungus strain, carrying out shaking culture, adding an ammonium molybdate solution when the diameter of fungus mycelium pellets in the liquid culture medium reaches 1cm, continuing culture, taking out solids after the culture is finished, washing the solids with deionized water until the solids are neutral,carrying out freeze drying; carbonizing the freeze-dried solids to obtain the mycelium / molybdenum oxide adsorption-catalytic material. The prepared mycelium / molybdenum oxide adsorption-catalytic material can effectively remove tannic acid in a radioactive waste liquid and can effectively reduce U(VI) in the radioactive waste liquid. The invention provides a biomass charcoal / molybdenum oxide composite material prepared on the basis of a fungal mycelium biological enrichment method. The biomass charcoal / molybdenum oxide composite material is used for treating and disposing radioactive wastewatercontaining organic matters.

Description

technical field [0001] The invention relates to the field of preparation of adsorption-catalysis materials, in particular to a method for preparing mycelia / molybdenum oxide adsorption-catalysis materials by bio-enrichment. Background technique [0002] During the production of nuclear fuel, the operation of nuclear power plants, and the decommissioning of nuclear facilities, a large amount of radioactive waste liquid will be generated. The radioactive nuclides in the waste liquid have problems such as strong radioactivity, long half-life, and high biological and chemical toxicity, so they will be harmful to humans for a long time. pose great harm to the ecological environment. Among the radioactive "three wastes" produced during the production of nuclear fuel, the operation of nuclear power plants, and the decommissioning of nuclear facilities, uranium is one of the radionuclides with a long half-life and has high chemical toxicity and radioactivity. It is one of the most d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J23/28B01J37/08C02F1/28C02F1/30C02F101/30
CPCB01J20/20B01J23/28B01J37/084C02F1/283C02F1/30C02F2101/006C02F2101/30Y02E30/30
Inventor 竹文坤段涛何嵘廉杰杨帆陈涛雷佳
Owner SOUTHWEAT UNIV OF SCI & TECH
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