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Degradable adsorbent as well as preparation method and application thereof

A technology of adsorbent and cross-linking agent, applied in the field of degradable adsorbent and its preparation, can solve the problems of sugar residual sulfur, pollution of the environment, inability to meet the requirements of medicine and food, etc., to improve adsorption performance, reduce raw material cost, and solve residual problems. Effects of sulphur problems

Pending Publication Date: 2021-04-13
安徽鸿昌糖业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, sugarcane sugar factories often use the sulfurous acid method to clarify the production process. The calcium sulfite produced by the reaction of sulfur dioxide and milk of lime is used as the main clarifying agent and decolorizing agent. The white sugar produced has the problem of residual sulfur, which cannot meet the needs of medicine and food.
In addition, in the process of sucrose sugar production, a large amount of bagasse will be produced, and its accumulation and disposal will pollute the environment

Method used

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  • Degradable adsorbent as well as preparation method and application thereof
  • Degradable adsorbent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of a degradable adsorbent, comprising the steps of: adding 0.06 g of activated carbon (activated carbon prepared from bagasse) with a particle size of ≤3 μm into 20 ml of a 5 wt % gelatin aqueous solution, and ultrasonically dispersing it uniformly to obtain solution A,

[0028] Add 20ml of solution A and 0.1g of Span 80 into 80ml of ethyl acetate, mix and emulsify for 2 hours to obtain an emulsion, then add 0.2g of glutaraldehyde dropwise and solidify at room temperature for 2.5 hours, filter, wash with ethanol and water for 4 times, Then vacuum freeze-dry at -10°C to obtain a degradable adsorbent with an average particle size of 61 μm.

Embodiment 2

[0030] A preparation method of a degradable adsorbent, comprising the steps of: adding 0.08 g of activated carbon (activated carbon prepared from bagasse) with a particle diameter of ≤3 μm into 12.5 ml of 8 wt % gelatin aqueous solution, and ultrasonically dispersing it uniformly to obtain solution A,

[0031] Add 12.5ml of solution A and 0.3g of Span 80 into 80ml of toluene, mix and emulsify for 2 hours to obtain an emulsion, then add 0.15g of glutaraldehyde dropwise and solidify at room temperature for 3 hours, filter, wash with ethanol and water for 4 times, and then Vacuum freeze-drying at -15°C yields a degradable adsorbent with an average particle size of 70 μm.

Embodiment 3

[0033] A preparation method of a degradable adsorbent, comprising the steps of: adding 0.07 g of activated carbon (activated carbon prepared from bagasse) with a particle size of ≤3 μm into 16 ml of a gelatin aqueous solution with a mass fraction of 6.5 wt%, and ultrasonically dispersing it uniformly to obtain solution A,

[0034] Add 16ml of solution A and 0.2g of Span 80 into 80ml of liquid paraffin, mix and emulsify for 2 hours to obtain an emulsion, then add 0.17g of glutaraldehyde dropwise and solidify at room temperature for 2.8 hours, filter, wash with ethanol and water for 4 times, and then Vacuum freeze-drying at -13°C yielded a degradable adsorbent with an average particle size of 65 μm.

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Abstract

The invention discloses a preparation method of a degradable adsorbent, which comprises the following steps: uniformly dispersing activated carbon in a gelatin aqueous solution to obtain a solution A, uniformly mixing the solution A with an organic solvent and a surfactant, emulsifying to obtain an emulsion, curing with a cross-linking agent, carrying out solid-liquid separation, and carrying out vacuum freeze drying to obtain the degradable adsorbent. The invention also discloses a degradable adsorbent which is prepared according to the preparation method of the degradable adsorbent. The invention also discloses application of the degradable adsorbent in impurity removal and decoloration of cane sugar liquid. The adsorbent provided by the invention has good adsorption performance, can be repeatedly used, and can be degraded without polluting the environment.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a degradable adsorbent and its preparation method and application. Background technique [0002] In sucrose, is the main component of table sugar. Widely used in all walks of life, especially in food and pharmaceutical excipients. In the sucrose preparation process, materials such as cane juice and syrup often need to be clarified. [0003] At present, sugarcane sugar factories often use the sulfite method to clarify the production process. The calcium sulfite produced by the reaction of sulfur dioxide and milk of lime is the main clarifier and decolorizer. The white sugar produced has the problem of residual sulfur, which cannot meet the needs of medicine and food. In addition, in the process of sucrose sugar production, a large amount of bagasse will be produced, and its accumulation and disposal will pollute the environment. Contents of the invention [0004] Based on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01J20/28C13B20/12
CPCB01J20/20B01J20/24B01J20/28021C13B20/12C13B20/123C13B20/126B01J2220/4812B01J2220/4806B01J2220/46B01J2220/4856
Inventor 周大钊
Owner 安徽鸿昌糖业科技有限公司