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Method of preparing polypeptide-amino acid metal-ion chelated liquid fertilizer by taking enzymolysis residue oxidation product as chelating agent

A technology of oxidation products and enzymatic residues, applied in nitrogen fertilizer and other directions, can solve the problems of crop product quality decline, impact on human health, serious diseases and insect pests, etc.

Inactive Publication Date: 2018-09-07
WUHU CHUANGYUAN NEW MATERIALS CO LTD
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Problems solved by technology

[0003] Long-term large-scale application of inorganic chemical fertilizers, soil quality declines, serious pests and diseases, and crop product quality declines, seriously affecting human health

Method used

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Embodiment

[0018] A method for preparing polypeptide-amino acid metal ion chelated liquid fertilizer by using the oxidation product of enzymatic hydrolysis residue as a chelating agent, which is characterized in that it is carried out as follows:

[0019] (1) Oxidation reaction of enzymatic hydrolysis residue:

[0020] Add distilled water 1:5 to 20kg enzymatic hydrolysis residue to prepare a suspension, add 2kg KMnO 4 The solution, with an initial pH of 2-3, is oxidized for 85 minutes at a temperature of 70-75°C, and the reaction mixture is centrifuged at 5000 rpm for 5 minutes to obtain an oxidation product;

[0021] (2) Hydrolysis and chelation of keratin:

[0022] Add sulfuric acid 1:1 to 50kg of keratin and mix, after the hydrolysis reaction is carried out in the 120-122℃ reaction kettle, strengthen the alkali for neutralization reaction, stir at 50-53℃ for 25min, pass through a 20 mesh sieve, and add to the filtrate The liquid phase and trace elements of the oxidation product obtained in th...

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Abstract

The invention discloses a method of preparing polypeptide-amino acid metal-ion chelated liquid fertilizer by taking an enzymolysis residue oxidation product as a chelating agent. The method is characterized by comprising the following steps: adding distilled water into enzymolysis residues to prepare a suspension, adding a KMnO4 solution, carrying out an oxidation reaction by heating, and carryingout centrifugation on the mixture obtained after the reaction to obtain an oxidation product; adding sulfuric acid to keratin, carrying out a hydrolysis reaction in a reaction kettle, adding a strongbase, carrying out a neutralization reaction, carrying out stirring and sieving, adding a chelating agent, the liquid phase of the oxidation product and trace elements into the filtrate, and carryingout stirring to prepare a polypeptide-amino acid stock solution; and filtering the obtained polypeptide-amino acid stock solution, adding the solid phase of the obtained oxidation product, carrying out mixing, and carrying out a cheating reaction with inorganic elements which are four metal ions comprising iron ions, copper ions, zinc ions and manganese ions to prepare the polypeptide-amino acidmetal-ion chelated liquid fertilizer.

Description

Technical field [0001] The invention relates to the field of soil improvement fertilizers, in particular to a method for preparing a polypeptide-amino acid metal ion chelated liquid fertilizer by using an oxidation product of an enzymatic hydrolysis residue as a chelating agent. Background technique [0002] With the rapid growth of the global economy, the increasing energy demand and the intensification of the contradiction between the shortage of conventional energy supply, cellulosic bioethanol is getting more and more attention from countries around the world for its clean, environmentally friendly and renewable characteristics. Extensive research has been carried out on the preparation of bioethanol from corn stover, and the comprehensive utilization of residues after enzymatic hydrolysis is also imperative. [0003] The long-term large-scale application of inorganic fertilizers has reduced the quality of soil, serious diseases and insect pests, and the quality of crop product...

Claims

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Application Information

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IPC IPC(8): C05C11/00
CPCC05C11/00
Inventor 高恒东胡佳佳
Owner WUHU CHUANGYUAN NEW MATERIALS CO LTD
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