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

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example

[0017] A preparation method of a cyanobactin biochar material with efficient adsorption of riboflavin, comprising the following steps:

[0018] Step (1), passing the salvaged cyanobacteria through a 20-mesh sieve, then drying in an oven at 105° C. to obtain massive cyanobacterial biomass, and then pulverizing the massive cyanobacterial biomass with a pulverizer to obtain powdered cyanobacterial biomass;

[0019] In step (2), the powdered cyanobacterial biomass and KOH are mixed in a mass ratio of 1:1, wrapped with tin foil, and placed in a tube furnace for pyrolysis to obtain a pyrolysis product; wherein, the pyrolysis conditions are as follows: pyrolysis at 800° C. for 3h ; Heating rate: 10℃ / min; Atmosphere in tube furnace: inert gas N 2 ;

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

Example Embodiment

[0021] Specific Example 1

[0022] The prepared cyanobacterial 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 cyanobacterial biochar into 50 mL of riboflavin solution with a concentration of 65 mg / L, control the temperature of the constant temperature shaker to 25 ° C, the speed of rotation 150 rpm, react for 4 h, centrifuge (6000 rpm, 5 min) to obtain the supernatant, and detect the reaction with a spectrophotometer. The riboflavin concentration in the solution was calculated, and the recovery rate of riboflavin was 77.0%.

Example Embodiment

[0024] Specific embodiment 2

[0025] The prepared cyanobacterial 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 cyanobacterial biochar 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 rotation speed of 150 rpm, react for 4 h, centrifuge (6000 rpm, 5 min) to obtain the supernatant, and detect the reaction with a spectrophotometer. The riboflavin concentration in the solution was calculated, and the recovery rate of riboflavin was 98.1%.

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PUM

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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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