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Method for preparing multifunctional leaf fertilizer by using shrimp waste

A waste, multi-functional technology, applied in the fields of animal carcass fertilizer, application, organic fertilizer, etc., can solve the problems of lack of safety, difficult to achieve clean production, low amino acid and chitosan content in liquid organic fertilizer, etc. simple craftsmanship

Active Publication Date: 2012-05-23
ZHANJIANG BOTAI BIOCHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the patent uses 10% to 15% potassium hydroxide to remove protein, it is difficult to completely hydrolyze shrimp protein and deacetylate chitin, because the water content of fresh shrimp waste reaches about 80%, making 10% to 15% The effective concentration of potassium hydroxide is about 2%, so the content of amino acid and chitosan in the liquid organic fertilizer is small; similarly, it is difficult to hydrolyze chitin into glucosamine with 10% to 15% phosphoric acid
The above patents use an open system or high temperature and high pressure production, which lacks safety and is difficult to achieve clean production
[0004] Judging from the existing literature and patents, it has not been reported that all shrimp wastes are used to prepare foliar fertilizers by using low-temperature decompression hydrolysis and other fully closed cycle processes, using low-volatility acid-base hydrolysis solvents

Method used

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  • Method for preparing multifunctional leaf fertilizer by using shrimp waste
  • Method for preparing multifunctional leaf fertilizer by using shrimp waste

Examples

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Effect test

Embodiment 1

[0024] A method for preparing multifunctional foliage fertilizer by utilizing shrimp waste, comprising the steps in turn:

[0025] 1) get 10kg fresh shrimp processed shrimp waste, add 99% (wt %) potassium hydroxide and put it into a reaction tank at a temperature of 40° C. Vacuum degree of 0.020 ~ 0.098MPa under reduced pressure reflux hydrolysis, using interstitial air flow stirring or mechanical continuous stirring, after hydrolysis for 24 hours, filter under reduced pressure, collect alkaline filtrate and alkaline filter residue;

[0026] 2) In the collected alkaline filter residue, add 99% (wt%) phosphoric acid into the reaction tank according to the mass ratio of the alkaline filter residue to the acidic solvent as 1:3, and put it into the reaction tank at a temperature of 40°C and a vacuum of 0.020 to 0.098 Under reduced pressure and reflux under MPa for hydrolysis, use interstitial airflow stirring or mechanical continuous stirring, after 24 hours of hydrolysis, filter ...

Embodiment 2

[0030] A method for preparing multifunctional foliage fertilizer by utilizing shrimp waste, comprising the steps in turn:

[0031] 1) get 10kg fresh shrimp processed shrimp waste, add 99% (wt %) potassium hydroxide and put it into a reaction tank according to the mass ratio of shrimp waste and alkaline solvent as 1: 6, at a temperature of 40 ° C, Vacuum degree of 0.020 ~ 0.098MPa under reduced pressure reflux hydrolysis, using interstitial air flow stirring or mechanical continuous stirring, after hydrolysis for 24 hours, filter under reduced pressure, collect alkaline filtrate and alkaline filter residue;

[0032] 2) In the collected alkaline filter residue, add 99% (wt%) phosphoric acid into the reaction tank according to the mass ratio of the alkaline filter residue to the acidic solvent as 1:6, and put it into the reaction tank at a temperature of 40°C and a vacuum of 0.020 to 0.098 Under reduced pressure and reflux under MPa for hydrolysis, use interstitial airflow stirri...

Embodiment 3

[0036] A method for preparing multifunctional foliage fertilizer by utilizing shrimp waste, comprising the steps in turn:

[0037] 1) Get 10kg fresh shrimp processed shrimp waste, add 99% (wt %) potassium hydroxide and put it into a reaction tank at a temperature of 40° C. Vacuum degree of 0.020 ~ 0.098MPa under reduced pressure reflux hydrolysis, using interstitial air flow stirring or mechanical continuous stirring, after hydrolysis for 24 hours, filter under reduced pressure, collect alkaline filtrate and alkaline filter residue;

[0038] 2) In the collected basic filter residue, add 99% (wt%) phosphoric acid into the reaction tank according to the mass ratio of basic filter residue and acidic solvent as 1:12, and put it into a reaction tank at a temperature of 40°C and a vacuum of 0.020 to 0.098 Under reduced pressure and reflux under MPa for hydrolysis, use interstitial airflow stirring or mechanical continuous stirring, after 24 hours of hydrolysis, filter under reduced ...

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Abstract

The invention relates to a method for preparing a multifunctional leaf fertilizer by using shrimp waste, which comprises the following steps: taking a large amount of fresh leftovers from the shrimp meat processing, hydrolyzing shrimp protein, cephaline, lecithin and chitin by using acid solution of a phosphor element needed by the leaf fertilizer; dissolving the calcium salt, magnesium salt, zinc salt, astaxanthin and the like in the shrimp shells by using alkaline solution of potassium element needed by the leaf fertilizer; and mixing the alkaline solution and the acid solution filtered outby the treatment of the two steps to obtain nutrient solution containing polypeptides, amino acids, phospholipids, chitosan, organic nitrogen, phosphor, potassium, calcium, magnesium, zinc, antifungal ingredients and the like, which can be absorbed and used by plants; and adjusting the pH value of the mixed solution rich in plant nutrients to 5 to 8 by using the alkaline solution of potassium or the acid solution of phosphor to obtain the multifunctional leaf fertilizer. The preparation method is simple in process, high in operability, high in added value, and environmentally-friendly and clean in production.

Description

technical field [0001] The invention relates to a method for preparing multifunctional foliar fertilizer by utilizing shrimp waste, in particular to a clean production method for producing foliar fertilizer from all shrimp waste by means of a non-volatile acid-base hydrolysis solvent. Background technique [0002] For a long time, shrimp waste is mainly used for processing and preparing chitin, and the process of producing chitin usually includes decalcifying shrimp shells by soaking them in hydrochloric acid, and then boiling them with caustic soda to deproteinize them. However, due to the discharge of a large amount of waste acid, waste alkali, high ammonia nitrogen wastewater and acid gas (HC1) in the process of decalcification, deproteinization and cleaning, the environmental pollution in the surrounding areas of processing is very serious. The chitin industry has long been included in the blacklist of high-pollution industries by relevant environmental protection depart...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F1/00
CPCY02A40/20
Inventor 宋光泉王荣辉刘勇陈迁
Owner ZHANJIANG BOTAI BIOCHEM IND
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