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Method for preparing fertilizers by comprehensively utilizing oil residue

A technology for preparing fertilizers and oil residues, applied in fertilization methods, fertilizer mixtures, applications, etc., can solve problems such as waste of nutrient resources, reduction of contact with crop roots, loss of soil moisture, etc., and achieve the effect of improving efficiency

Inactive Publication Date: 2014-10-01
SHANDONG GUANGDA FERTILIZER INDAL TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned biodegradation method and acid hydrolysis method also have some deficiencies. One is that the treatment of oil residue only acts on the protein part that is easy to decompose in the oil residue, while the parts that are difficult to decompose and phosphorus-containing compounds have poor decomposing properties, and the crops are not easy to absorb and utilize. , is also a waste of nutrient resources; secondly, in these two methods, the degradation products or hydrolyzates are directly mixed with other raw materials and applied to the soil as solid organic fertilizers. Due to the large volume of the soil, amino acids and various bioactive components are dispersed , the contact with the crop root system is reduced, or due to soil adsorption and soil water loss, etc., the active ingredients cannot be well utilized; moreover, the CN101863686A biological method for treating oil residue uses four types of microbial bacteria as decomposing organisms, requiring aseptic conditions. The process is complicated, and the components of the product obtained by the CN101863691A acid hydrolysis method for treating oil residue are relatively single, which cannot meet the various nutritional requirements of crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of oil residue enzymatic hydrolyzate:

[0041] A. Take 15 kg of fresh soybean oil residue and add it to the container, add 90 kg of water, adjust the pH value to 8.0, add 0.16 kg of lipase preparation (SUKALip PW12.5), stir for 4 minutes, and place it at 38°C for 45 hours. Stir once every 2 hours, 3 minutes each time, to obtain lipolysis oil residue;

[0042] B. Boil the lipolysis oil residue prepared in the above step A for 12 minutes, adjust the pH value to 7.0 after cooling, add 0.3 kg of neutral protease preparation (NE PW50), stir for 4 minutes, and place at 55°C for 2.5 hours. During this period, stir once every half hour, each time for 1.5 minutes, to obtain the enzymatic hydrolyzate of oil residue;

[0043] C. Filter the oil residue enzymatic hydrolyzate to obtain two parts: enzymatic liquid and enzymatic solid; used in the following steps:

[0044](2) Get 80 kilograms of step (1) gained enzymolysis liquid, add 16 kilograms of potassium dihydro...

Embodiment 2

[0047] (1) Preparation of oil residue enzymatic hydrolyzate:

[0048] A. Take 20 kg of fresh rapeseed oil residue and put it into a container, add 80 kg of water, adjust the pH value to 8.2, add 0.20 kg of lipase preparation (SUKALip PW10), stir for 5 minutes, and place it at 40°C for 50 hours. Stir once every 2 hours, 3 minutes each time, to obtain lipolysis oil residue;

[0049] B. Boil the lipolysis oil residue prepared in step A for 15 minutes, adjust the pH value to 7.2 after cooling, add 0.4 kg of neutral protease preparation (the composition of NE PW30 and NE PW50 with a mass ratio of 1: 1), stir for 5 minutes Minutes, placed at 60°C for 3 hours, stirring once every half an hour, 1.5 minutes each time, to obtain enzymatic hydrolyzate of oil residue;

[0050] C, filter, get liquid and solid two parts;

[0051] (2) Get 70 kilograms of step (1) gained enzymolysis liquid, add 20 kilograms of potassium dihydrogen phosphate, 9.7 kilograms of trace element solution, 0.3 kilo...

Embodiment 3

[0054] (1) Preparation of oil residue enzymatic hydrolyzate:

[0055] A. Take 10 kg of the composition of fresh peanut oil residue and safflower seed oil residue in a mass ratio of 1:1, add it to a container, add 100 kg of water, adjust the pH value to 7.5, add 0.10 kg of lipase preparation (SUKALip PW15), and stir for 3 minutes , placed under the condition of 35°C for 40 hours, stirring once every 2 hours during this period, each time for 3 minutes, to obtain lipolysis oil residue;

[0056] B. Boil the lipolysis oil residue prepared in step A for 10 minutes, adjust the pH value to 6.8 after cooling, add 0.2 kg of neutral protease preparation (NE PW50), stir for 2 minutes, and place it at 50°C for 2.0 hours, during which time Stir once every half hour, 1.5 minutes each time, to obtain the enzymatic hydrolyzate of oil residue;

[0057] C, filter, get liquid and solid two parts;

[0058] (2) Get 85 kilograms of step (1) gained enzymolysis liquid, 10 kilograms of potassium dihy...

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Abstract

The invention relates to a method for preparing fertilizers by comprehensively utilizing oil residues. The method comprises the following steps: firstly, decomposing grease in the oil residues by using lipase preparation, and further decomposing protein by using a neutral protease preparation so as to generate amino acid and plant active substances; subsequently separating an product, wherein an enzymolysis liquid is taken as a leaf fertilizer and enzymolysis solid is taken as a raw material of an organic fertilizer; and further adding other organic materials for normal fermentation so as to produce the organic fertilizer. By adopting the method, two products, namely, the leaf fertilizer and the solid organic fertilizer are simultaneously produced, and the field experiment shows that the fertilizers prepared by using the method are good in yield-increasing effect.

Description

technical field [0001] The invention relates to a fertilizer preparation method, in particular to a method for comprehensively utilizing oil residue to produce fertilizer, and belongs to the technical field of fertilizer production. Background technique [0002] Oil residue is the residue from the cold filtration process during the pressing process to produce vegetable oil, also known as filter cake. Compared with most of the organic matter in the existing fertilizer production, the oil residue contains more protein. According to the existing common fermentation method, the protein is completely decomposed and the inorganic nitrogen is released for crop absorption and utilization. A waste of medium and high quality nitrogen sources. At present, oil residue is generally directly used as a raw material of organic fertilizers, mixed with other organic matter and fermented to produce organic fertilizers or organic-inorganic compound fertilizers, such as CN103497035A, CN 1029424...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05F15/00A01C21/00
Inventor 姜兴民郭庆文郭新凯曹利庆
Owner SHANDONG GUANGDA FERTILIZER INDAL TECHCO
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