Resource utilization method of waste animal wool and vinyl retanned material based on keratin hydrolysate and application

A hydrolyzate and resource utilization technology, which is applied in the field of resource utilization of waste biomass, can solve problems such as inability to achieve resource utilization

Active Publication Date: 2018-07-31
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods in the prior art have the problem of controlling the molecular weight

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Take 100 parts of waste animal hair and place it in a reaction kettle with a capacity of 1.5T, then add 800 parts of water, heat to 70°C, then add 120 parts of hydrogen peroxide, react for 60 minutes, and filter;

[0062] Add 800 parts of water into the reaction kettle containing the decolorized waste cow hair, and heat it to 75°C, then add 20 parts of sodium hydroxide, and react for 120 minutes; then add 10 parts of sodium bisulfite and 14 parts of sodium metabisulfite, and react for 90 Minutes, finally adjust its pH to 6 with 30 parts of acetic acid, filter;

[0063] Take 1000 parts of the hydrolysis filtrate, and use a three-effect energy-saving external circulation circulation vacuum concentrator to concentrate it into a concentrated solution with a concentration of 30% by adopting an external heating type natural circulation and negative pressure evaporation method;

[0064] A. Preparation of mixed monomer solution

[0065] First, put 120 parts of acrylic acid, 30...

Embodiment 2

[0071] Take 100 parts of waste animal hair and place it in a reaction kettle with a capacity of 1.5T, then add 1200 parts of water, heat to 80°C, then add 160 parts of hydrogen peroxide, react for 90 minutes, and filter;

[0072] Add 1200 parts of water to the reaction kettle containing the discarded cow hair after decolorization, and heat it to 85°C, then add 30 parts of sodium hydroxide, react for 180 minutes, then add 20 parts of sodium bisulfite, 20 parts of sodium metabisulfite, and react for 120 minutes Minutes, finally adjust its pH to 7 with 40 parts of acetic acid, filter;

[0073] Take 1000 parts of the hydrolysis filtrate, and use a three-effect energy-saving external circulation circulation vacuum concentrator to concentrate it to a concentration of 40% by means of external heating natural circulation and negative pressure evaporation;

[0074] A. Preparation of mixed monomer solution

[0075] First put 150 parts of acrylic acid, 40 parts of itaconic acid, 80 part...

Embodiment 3

[0081] Take 100 parts of waste animal hair and place it in a reactor with a capacity of 1.5T, then add 1000 parts of water, heat to 75°C, then add 140 parts of hydrogen peroxide, react for 75 minutes, and filter;

[0082] Add 1,000 parts of water to the reaction kettle containing waste cow hair after decolorization, and heat to 80°C, then add 25 parts of sodium hydroxide, react for 150 minutes, then add 15 parts of sodium bisulfite, 17 parts of sodium metabisulfite, and react for 105 Minutes, finally adjust its pH to 6.5 with 35 parts of acetic acid, filter;

[0083] Take 1000 parts of the hydrolysis filtrate, and use a three-effect energy-saving external circulation circulation vacuum concentrator to concentrate it to a concentration of 35% by means of external heating natural circulation and negative pressure evaporation;

[0084] A. Preparation of mixed monomer solution

[0085] First, put 135 parts of acrylic acid, 35 parts of itaconic acid, 70 parts of acrylamide, and 70...

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PUM

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Abstract

The invention provides a resource utilization method of waste animal wool and belongs to the field of resource utilization of waste biomass. The method comprises the following steps: processing the waste animal wool with hydrogen peroxide to play double roles of decoloring and oxidation hydrolysis; carrying out alkaline hydrolysis combining sodium hydroxide, sodium hydrogen sulfite and sodium metabisulfite, wherein the hydrolysis rate of keratin is improved greatly to 92-95%; and carrying out a polymerization reaction on vinyl monomers such as acrylic acid, acrylamide and itaconic acid and concentrated liquor to obtain a vinyl retanned material based on keratin hydrolysate. The retanned material can endow leather with good retanning and filling properties, and the sense of plastics of product leather which is retanned by the vinyl polymer retanning agent can be reduced greatly, so that resource utilization of the waste animal wool is achieved, and the pollution on human and environmentof the waste animal wool can be reduced.

Description

technical field [0001] The invention relates to the technical field of resource utilization of waste biomass, in particular to a resource utilization method of waste animal hair, vinyl retanning materials based on keratin hydrolyzate and its application. Background technique [0002] Animal husbandry is an important part of agriculture and plays an important role in the national economy. While animal husbandry provides people with daily necessities such as meat, eggs, and milk, it also produces by-products such as fur and wool. Among them, the most common hairs are pig hair, wool, cow hair, chicken feather, duck feather (down) and goose feather (down), and the annual output reaches millions of tons. If all of them can be used rationally, it will benefit mankind more. It is gratifying that wool, pig hair (bristle), duck feather (down) and goose down (down) are used in wool spinning industry, clothing industry and daily life respectively. However, there are also discarded a...

Claims

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Application Information

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IPC IPC(8): C14C3/08
CPCC14C3/08
Inventor 罗建勋冯彦娟
Owner JIAXING UNIV
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