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Preparation method of cyanobacteria charcoal material capable of efficiently adsorbing riboflavin and application threof

A riboflavin and biochar technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of high preparation cost, insufficient riboflavin adsorption capacity, and insufficient raw material sources , to achieve high adsorption function and avoid secondary pollution

Pending Publication Date: 2020-09-25
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The core of adsorption technology is the adsorption material. In recent years, there have been many research reports on riboflavin adsorption materials, such as zeolite, ionic liquid modified Fe 3 o 4 Magnetic nanoparticles and mesoporous polyethylene glycol carbon, etc., but these adsorbent materials are limited in the recovery of riboflavin due to factors such as insufficient raw material sources, high preparation costs, or unsatisfactory adsorption capacity for riboflavin. practical application of

Method used

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  • Preparation method of cyanobacteria charcoal material capable of efficiently adsorbing riboflavin and application threof
  • Preparation method of cyanobacteria charcoal material capable of efficiently adsorbing riboflavin and application threof
  • Preparation method of cyanobacteria charcoal material capable of efficiently adsorbing riboflavin and application threof

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Effect test

Embodiment

[0017] A preparation method of a cyanobacteria biochar material with high-efficiency adsorption of riboflavin, comprising the following steps:

[0018] Step (1), pass the salvaged cyanobacteria through a 20-mesh sieve, then dry in an oven at 105°C to obtain blocky cyanobacterial biomass, and then pulverize the blocky cyanobacterial biomass with a pulverizer to obtain powdered cyanobacterial biomass;

[0019] Step (2), mix the powdered cyanobacterial biomass and KOH according to the mass ratio of 1:1, wrap it in tin foil, and place it in a tube furnace for pyrolysis to obtain a pyrolysis product; wherein, the pyrolysis conditions are as follows: pyrolysis at 800°C for 3 hours ;Heating rate: 10℃ / min; Atmosphere in tube furnace: inert gas N 2 ;

[0020] Step (3), wash the pyrolysis product with 5% hydrochloric acid, neutralize the KOH in the pyrolysis product, then use the circulating water pump to filter the filter cup to pass through the 0.45um membrane, trap the solid on the ...

specific Embodiment 1

[0022] The prepared cyanobacteria biochar material is used to recover the valuable component riboflavin in the solution, and the specific steps are as follows:

[0023] Weigh 5 mg of cyanobacteria biochar and put it into 50 mL of riboflavin solution with a concentration of 65 mg / L, control the temperature of the constant temperature shaker at 25 ° C, the speed of 150 rpm, react for 4 h, centrifuge (6000 rpm, 5 min) to obtain the supernatant, and use a spectrophotometer to detect the reaction. The concentration of riboflavin in the solution was calculated and the recovery rate of riboflavin was 77.0%.

specific Embodiment 2

[0025] The prepared cyanobacteria biochar material is used to recover the valuable component riboflavin in the solution, and the specific steps are as follows:

[0026] Weigh 5 mg of cyanobacteria biochar and put it into 50 mL of riboflavin solution with a concentration of 55 mg / L, control the temperature of the constant temperature shaker at 25 ° C, the speed of 150 rpm, react for 4 h, centrifuge (6000 rpm, 5 min) to obtain the supernatant, and use a spectrophotometer to detect the reaction. The concentration of riboflavin in the solution was calculated and the recovery rate of riboflavin was 98.1%.

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Abstract

The invention discloses a preparation method of a cyanobacteria charcoal material capable of efficiently adsorbing riboflavin and an application thereof, which comprises the following steps: screeningsalvaged cyanobacteria, drying in an oven to obtain blocky cyanobacteria biomass, and pulverizing with a pulverizer to obtain powdery cyanobacteria biomass; mixing powdery cyanobacteria biomass withKOH, wrapping with tin foil paper, and pyrolyzing in a tubular furnace to obtain a pyrolyzed product; cleaning a pyrolysis product with hydrochloric acid, then passing through a membrane, interceptinga solid on the surface of the membrane, and then cleaning with purified water until the solid is neutral; drying the solid, grinding the solid into powder, and sieving the powder to obtain the cyanobacteria charcoal material. The cyanobacteria biomass is selected as a raw material, KOH is used as an activating agent, and the cyanobacteria charcoal material is prepared through tubular furnace carbonization. On one hand, the waste cyanobacteria biomass is safely treated, secondary pollution is avoided, on the other hand, the cyanobacteria charcoal has a high adsorption function on riboflavin, and theoretical and key technical supports are provided for separation and purification of riboflavin in fermentation liquor.

Description

technical field [0001] The invention specifically relates to a cyanobacteria biochar material with high-efficiency adsorption of riboflavin and its preparation method and application. Background technique [0002] riboflavin, vitamin B 2 , is an essential exogenous nutrient for the human body, and its commercial production mainly uses microbial fermentation. Riboflavin needs to be separated and purified in the fermentation broth, but the traditional process of riboflavin separation and purification is complicated, and the product purity and yield are low , chemical residues and high cost, it is particularly necessary to develop efficient, non-toxic, and low-cost riboflavin recovery technology, which has very important environmental value and social significance. [0003] Adsorption technology has great application potential in the recovery of riboflavin in liquid phase due to its characteristics of simple operation, low operating cost, reusable adsorbent, high separation ef...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/20B01J20/30C01B32/348C01B32/324C02F101/34C02F101/38
CPCC02F1/283B01J20/20C01B32/348C01B32/324C02F2101/38C02F2101/34
Inventor 汪岩山刘波支伟茹黄秋玉李哲鑫黄萍萍罗淑琪汪日辉张驷强
Owner NANTONG UNIVERSITY
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