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Method for preparing composite hydrogel through modifying bamboo shoot leftovers and application of composite hydrogel

A technology of composite hydrogel and leftovers, applied in chemical instruments and methods, other chemical processes, fiber raw material processing, etc., can solve problems such as production, life and health adverse effects, waste of biomass resources, waste of resources and the environment, etc. Achieve the effects of easy industrial operation, strong adsorption capacity and stable adsorption performance

Active Publication Date: 2014-10-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the process of bamboo shoot processing, a large amount of processing waste - leftovers will be produced. If these by-products are not handled properly, it will cause waste of resources and environmental pollution, which will have a negative impact on people's production, life and health. Adverse effects and waste of biomass resources

Method used

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  • Method for preparing composite hydrogel through modifying bamboo shoot leftovers and application of composite hydrogel
  • Method for preparing composite hydrogel through modifying bamboo shoot leftovers and application of composite hydrogel
  • Method for preparing composite hydrogel through modifying bamboo shoot leftovers and application of composite hydrogel

Examples

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Effect test

Embodiment 1

[0045] (1) Bamboo shoot leftovers are washed, dried at 70° C. for 12 hours, cut into small pieces, pulverized by a pulverizer and passed through an 80-mesh sieve to obtain bamboo shoot residue powder with a particle size of 0.1-0.6 mm.

[0046] (2) Add distilled water according to the ratio of material-water ratio (mass ratio) 1:20 of bamboo shoot leftovers, carry out deenzyming treatment at 70°C for 2 hours to passivate active enzymes of bamboo shoots, and then use glacial acetic acid with a mass fraction of 10% Adjust the pH of the solution at 3.8. After the adjustment, add sodium chlorite for bleaching treatment for 2 hours. The mass ratio of the amount of sodium chlorite added to the bamboo shoot leftovers powder is 1:1, and bleaching treatment is carried out at 80°C to remove Lignin in bamboo shoot leftovers;

[0047] (3) After bleaching, filter the insoluble flocculent in the solution, wash it with distilled water until the filtrate is colorless, finally use 90% ethanol ...

Embodiment 2

[0059] (1) Bamboo shoot leftovers are washed, dried at 80° C. for 16 hours, cut into small pieces, pulverized by a pulverizer through an 80-mesh sieve to obtain bamboo shoot residue powder, and the particle size of the powder is 0.1-0.6 mm.

[0060] (2) Bamboo shoot leftovers powder is added to distilled water according to the ratio of material-water ratio (mass ratio) 1:25, and the active enzymes of bamboo shoots are inactivated for 2.5 hours at 65 ° C, and then the mass fraction is 10% ice Acetic acid is used to adjust the pH of the solution to 4.0. After the adjustment, sodium chlorite is added for bleaching treatment for 2 hours. The mass ratio of the amount of sodium chlorite added to the bamboo shoot leftover powder is 0.9:1, and the bleaching treatment is carried out at 80°C. Removal of lignin in bamboo shoot leftovers.

[0061] (3) After bleaching, filter the insoluble flocculent in the solution, wash it with distilled water until the filtrate is colorless, finally use...

Embodiment 3

[0072] (1) Bamboo shoot leftovers are washed, dried at 75° C. for 16 hours, cut into small pieces, pulverized by a grinder and passed through an 80-mesh sieve to obtain bamboo shoot residue powder with a particle size of 0.1-0.6 mm.

[0073] (2) Bamboo shoot leftovers powder is added distilled water according to the ratio of material water ratio 1:20, under the condition of 70 DEG C, carry out deenzyming treatment 2h passivation bamboo shoot active enzymes, adjust solution pH at 3.8 with 10% glacial acetic acid afterwards, adjust After completion, add sodium chlorite for bleaching treatment for 3 hours, the mass ratio of the amount of sodium chlorite added to the bamboo shoot leftovers powder is 1:1, and bleaching treatment is carried out at 80°C to remove the lignin in the bamboo shoot leftovers .

[0074] (3) After bleaching, filter the insoluble flocculent in the solution, wash it with distilled water until the filtrate is colorless, finally use 95% ethanol to wash with alc...

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Abstract

The invention provides a method for preparing composite hydrogel through modifying bamboo shoot leftovers and an application of the composite hydrogel. An adsorption material is prepared by the steps of extracting cellulose from the bamboo shoot leftovers, then modifying by sodium chloroacetate, carrying out epoxy chloropropane cross-linking, followed by carrying out inverse suspension polymerization, and finally carrying out freeze drying. The prepared hydrogel beads are used as a bio-adsorbent, methylene blue is used as a dye model molecule, an adsorption effect on methylene blue is studied, and a theoretical foundation is laid for adsorption and sustained release of the hydrogel. The novel composite hydrogel prepared by utilizing the bamboo shoot processing waste leftovers is rich in raw material sources and low in cost, can achieve waste utilization, and promotes recycling economy; and the prepared hydrogel can be applied to adsorption of dye wastewater and adsorption and sustained release of a model drug, reduces pollution of bamboo shoot leftover arbitrarily discarding on the environment, and can play a certain role in promoting green development of ecological resources.

Description

technical field [0001] The invention relates to a method for composite hydrogel and its application, in particular to a method for preparing composite hydrogel by modifying leftovers of bamboo shoots and its application. Background technique [0002] Bamboo shoot (Bamboo shoot) is an edible plant with abundant resources and high yield. Bamboo shoots are the unique enlarged bud stems of bamboo in the early growth stage. It is tender and delicious, rich in essential amino acids, mineral elements, vitamins and fiber components that are difficult to be digested by the human body. It is a natural food with nutritional value . Due to the continuous promotion and application of bamboo shoots planted in woodlands in recent years, since 2010, 5-6 million tons of bamboo shoots have been produced every year, except for 40% of which are sold fresh, and the rest are used for the processing of canned and dried bamboo shoots. [0003] The meat of bamboo shoots used to make canned bamboo ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J3/24C08L1/26C08L5/00C08K5/1515C08B11/12D21C5/00B01J20/30B01J20/24
Inventor 黄惠华罗文超陈挺强周端
Owner SOUTH CHINA UNIV OF TECH
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