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Method for producing organic seaweed fertilizer employing algae processing waste and prepared fertilizer

A seaweed fertilizer and waste technology, which is applied to organic fertilizers, inorganic fertilizers, ammonium salt fertilizers, etc., can solve the problems of resource waste, low utilization rate of large seaweed and microalgae processing wastes, waste pollution, etc. The effect of short cycle, promotion of comprehensive utilization, and easy operation

Active Publication Date: 2015-03-04
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the prior art that the utilization rate of large seaweed and microalgae processing waste is not high, and the generated waste is discharged into the environment to pollute and waste resources, and to provide an efficient and simple method for processing waste from algae Method for obtaining organic seaweed fertilizer by extracting nutrient substances from seaweed and organic seaweed fertilizer and organic seaweed compound fertilizer made by this method

Method used

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  • Method for producing organic seaweed fertilizer employing algae processing waste and prepared fertilizer
  • Method for producing organic seaweed fertilizer employing algae processing waste and prepared fertilizer
  • Method for producing organic seaweed fertilizer employing algae processing waste and prepared fertilizer

Examples

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Embodiment 1

[0033]The kelp slag powder after washing, dehydration and drying is passed through an 80-mesh sieve to make kelp slag powder with uniform particle size, and mixed with the chlorella slag after washing, dehydration and freeze-drying in a mass ratio of 1:1, Suspend with acetic acid-sodium acetate buffer solution with pH 5.0, the mass volume ratio of algal residue to buffer is 1:15, add 2% cellulase according to the mass ratio of enzyme to algal residue, extract at 55°C for 72 hours, and extinguish at 100°C Enzyme activity for 5 minutes; B. Adjust pH to 4.2, add 1% pectinase, temperature 50°C, extract for 72 hours, inactivate enzyme activity at 100°C for 5 minutes; C. Adjust pH to 6.0, finally add 1% papain, temperature 55°C, soak Extract for 48 hours, inactivate the enzyme at 100°C for 5 minutes, separate the algae dregs from the solid and liquid to obtain the enzymolysis supernatant; vacuum concentrate the enzymolysis supernatant to a specific gravity of 1.0g / ml; the solid after...

Embodiment 2

[0035] Powder the mixed slag of kelp and Eucheuma after washing, dehydration, and drying, pass through an 80-mesh sieve to make seaweed slag powder with uniform particle size, and mix it with the spirulina slag after washing, dehydration, and freeze-drying at a ratio of 2:1. Proportional mixing, with 1% Na 2 CO 3 Digest the solution, extract at 60°C for 60 hours; adjust the pH to 4.5, add 2% cellulase and 1% pectinase according to the mass ratio of enzyme:algal residue, extract at 50°C for 72 hours, and inactivate the enzyme activity at 100°C 5min; adjust the pH to 5.5, finally add 1% papain, extract at 55°C for 48h, inactivate the enzyme at 100°C for 5min, and separate the solid-liquid of the algae residue enzymolysis solution; the enzymolysis supernatant is vacuum concentrated to a specific gravity of 1.0g / ml; the solid matter after the above solid-liquid separation, that is, the seaweed residue after enzymatic hydrolysis treatment, was leached with 90% ethanol for 12 hour...

Embodiment 3

[0037] Powder the washed, dehydrated, and dried euglena dregs, pass through an 80-mesh sieve to make seaweed dregs with uniform particle size, and mix them with washed, dehydrated, and freeze-dried chlorella dregs in a ratio of 2:1 , suspending with a buffer solution with a pH of 6.0, and the ratio of algae residue to buffer solution is 1:15. Add 2.5% cellulase to the mixed system according to the mass ratio of enzyme / algal residue, extract at 45°C for 72 hours, inactivate the enzyme at 100°C for 4 minutes; adjust the pH to 3.5, add 2% pectinase, extract at 40°C for 72 hours, Inactivate the enzyme activity at 100°C for 4 minutes; adjust the pH to 5.5, finally add 1% papain, extract at 60°C for 72 hours, inactivate the enzyme activity at 100°C for 4 minutes, and separate the solid-liquid separation of the algae residue enzymolysis solution; concentrate the enzymolysis supernatant in vacuum to The specific gravity is 1.2g / ml; the solid matter after the above solid-liquid separat...

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Abstract

The invention belongs to the fields of forestry and agricultural residue recycling and organic fertilizer production, and provides a method for producing an organic seaweed fertilizer employing an algae processing waste, and an organic seaweed fertilizer and an organic seaweed compound fertilizer prepared by the method. The method mainly comprises the following steps: crushing and evenly mixing the algae waste; decomposing an algae cell wall, polysaccharide and protein in an enzymolysis manner; carrying out solid-liquid separation on enzymatic hydrolysate, leaching enzymolysis algal residues to prepare extractum by adopting ethanol; mixing the enzymatic hydrolysate with the extractum to form an organic seaweed liquid fertilizer; mixing with a certain ratio of algae residue to form an organic seaweed granular fertilizer; and preparing the organic seaweed compound fertilizer after a proper amount of chemical fertilizer is added. The organic seaweed fertilizer is prepared by the wastes generated in macro-algae processing and micro-algae processing processes as the raw material, so that the operation is simple and convenient; the preparation cycle is short; a new idea for processing the wastes is provided for macro-algae or micro-algae processing enterprises; the environmental friendliness of enterprise production and processing is improved; and economic benefits of the enterprises are improved.

Description

technical field [0001] The invention belongs to the fields of agricultural and forestry waste reuse and organic fertilizer production, and relates to a method for preparing organic seaweed fertilizer, in particular to a method for producing organic seaweed fertilizer by enzymatically degrading the waste produced in the processing of large seaweed and microalgae and Organic seaweed fertilizer and organic seaweed compound fertilizer made by this method. Background technique [0002] my country is rich in macroalgae resources, with an annual output of more than 7 million tons, accounting for more than half of the world's total output. Relying on the abundant large seaweed resources, my country has established a large-scale large seaweed production and processing industry, forming a large seaweed industrial system with brown algae and red algae as the main body, involving food, feed, medicine, chemical industry and other fields, becoming a marine industry. important part of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B17/00C05G3/00C05G5/20C05C3/00C05C9/00C05D1/02C05F11/00C05F11/02
Inventor 王长海何梅琳郑世燕吴明珠邹山梅
Owner NANJING AGRICULTURAL UNIVERSITY
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