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Preparation method of biodegradable high oil absorption material

A technology of biodegradation and high oil absorption, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of low oil absorption ratio, lower cellulose crystallinity, secondary pollution, etc., achieve short oil absorption time, The effect of high oil absorption ratio and fast oil absorption speed

Inactive Publication Date: 2017-05-17
汪逸凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the problems that the current high oil-absorbing materials are not easy to biodegrade, the oil-absorbing ratio is low, the disposal after oil-absorbing is very difficult, and burning or landfilling will cause serious secondary pollution, a kind of caprolactone is provided. Carbon source and microbial fermentation to prepare grafted bacterial cellulose, increase lipophilic groups, and then modify the crystallinity of cellulose through sodium periodate modification, and then modify it with silane coupling agent to make it hydrophobic. Thereby preparing the method for biodegradable high oil-absorbing material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First weigh 15g of caprolactone, 5g of peptone, 8g of yeast extract, 3g of agar and 800mL of water, add them to a petri dish, stir and mix for 1min, then add a 5% hydrochloric acid solution to adjust the pH to 6.3 to form a culture medium , and put it in a sterilizing tank, and sterilize it at 90°C for 5 minutes to obtain the Acetobacter xylinum culture medium; Bacteria were inoculated into the fermenter and fermented at 30°C for 5 days. After the fermentation was over, the gelatinous bacterial cellulose on the surface of the fermented liquid was taken out with tweezers, washed twice with water, placed in a beaker, and then added with a mass fraction of Immerse it in 10% sodium hydroxide solution, heat the beaker to 70°C, keep it warm for 30 minutes, remove the residual bacteria, and then wash it with water to neutral to obtain grafted bacterial cellulose; add the above-mentioned grafted bacterial cellulose to After pulverizing in the pulverizer for 30 minutes, pass thr...

example 2

[0020] First weigh 18g of caprolactone, 6g of peptone, 10g of yeast extract, 4g of agar and 900mL of water, add them to a petri dish, stir and mix for 2 minutes, then add a 5% hydrochloric acid solution to adjust the pH to 6.4 to form a culture medium , and put it in a sterilizing tank, and sterilize it at 92°C for 8 minutes to obtain Acetobacter xylinum culture medium; Bacteria were inoculated into the fermenter and fermented at 35°C for 5 days. After the fermentation was over, the gelatinous bacterial cellulose on the surface of the fermented liquid was taken out with tweezers, washed twice with water, placed in a beaker, and then added with a mass fraction of Immerse it in 10% sodium hydroxide solution, heat the beaker to 75°C, keep it warm for 35 minutes, remove the residual bacteria, and then wash it with water until neutral to obtain grafted bacterial cellulose; add the above-mentioned grafted bacterial cellulose to After crushing in the pulverizer for 35 minutes, pass t...

example 3

[0023] First weigh 20g of caprolactone, 8g of peptone, 12g of yeast extract, 5g of agar and 1000mL of water, add them to a petri dish, stir and mix for 3 minutes, then add a 5% hydrochloric acid solution to adjust the pH to 6.5 to form a culture medium , and put it in a sterilizing tank, and sterilize it at 95°C for 10 minutes to obtain the Acetobacter xylinum culture medium; Bacteria were inoculated into the fermenter and fermented at 40°C for 6 days. After the fermentation was over, the gelatinous bacterial cellulose on the surface of the fermented liquid was taken out with tweezers, washed with water for 3 times, placed in a beaker, and then added with a mass fraction of Immerse it in 10% sodium hydroxide solution, heat the beaker to 80°C, keep it warm for 40 minutes, remove the residual bacteria, and then wash it with water to neutral to obtain grafted bacterial cellulose; add the above-mentioned grafted bacterial cellulose to After pulverizing in the pulverizer for 40 min...

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Abstract

The invention relates to a preparation method of a biodegradable high oil absorption material, and belongs to the technical field of preparation of oil absorption materials. The method comprises the steps of firstly fermenting microorganisms by adopting caprolactone as a carbon source, forming a copolymer by the microorganisms and metabolites, adding a lipophilic group, and adsorbing and coating the oil by using a three-dimensional porous network structure between bacterial celluloses; modifying the celluloses through sodium periodate to reduce the crystallinity of the celluloses, exposing hydroxyl, modifying the hydroxyl through a silane coupling agent, and reacting with the hydroxyl to increase the hydrophobicity and lipophilicity; and finally carrying out drying treatment on the bacterial celluloses to obtain the biodegradable high oil absorption material. The used raw materials are biodegradable and can be recycled after absorbing the oil, a human body and the environment are not harmed, and the prepared oil absorption material is high in oil absorption, high in oil absorption rate and high in oil absorption speed.

Description

technical field [0001] The invention relates to a preparation method of a biodegradable high oil-absorbing material, belonging to the technical field of oil-absorbing material preparation. Background technique [0002] In recent years, with the increasing frequency of human activities, a series of accidents such as oil field leakage, oil tanker oil leakage, oil pipeline rupture and the discharge of oily wastewater have caused serious pollution of rivers and oceans, bringing immeasurable ecological disasters and economic loss. Failure to address these issues will inevitably cause greater damage. Therefore, there is an urgent need to develop low-cost, high oil-absorbing oil-absorbing materials, so that they can quickly treat water surface oil pollution in harsh environments. [0003] Oil-absorbing materials can generally be divided into traditional oil-absorbing materials and high-oil-absorbing materials. At present, the oil-absorbing materials used in my country are mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/32C08G63/08C08G63/91C08B15/05C12P19/04C12R1/02
CPCC09K3/32C08B15/05C08G63/08C08G63/912C12P19/04
Inventor 汪逸凡孟浩然
Owner 汪逸凡
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