Potash fertilizer-loaded slow-release degradable porous material and preparation method thereof

A technology of porous materials and potash fertilizers, which is applied in the preparation/purification of carbon, potash fertilizers, inorganic fertilizers, etc. It can solve the problems of high preparation cost and short release time, and achieve the effect of low cost, long fertilizer effect time and ideal structure

Inactive Publication Date: 2019-12-13
CHINA NONFERROUS METAL (GUILIN) GEOLOGY & MINING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The slow-release nitrogen fertilizer prepared by this patent releases up to 49% of nitrogen in 72 hours, resulting in a shorter slow-release time for nitrogen fertilizer concentration
[0009] The nitrogen source is tightly adsorbed on the modified zeolite. CN201810502357.8 announced "a device for preparing slow-release nitrogen fertilizer from modified zeolite and a method for preparing slow-release nitrogen fertilizer by using the device", which uses the ion exchange and adsorption properties of zeolite to adsorb nitrogen On zeolite, the whole preparation process requires the use of special equipment, and the preparation cost is relatively high

Method used

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  • Potash fertilizer-loaded slow-release degradable porous material and preparation method thereof
  • Potash fertilizer-loaded slow-release degradable porous material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: preparation load potassium fertilizer slow-release degradable porous material

[0044] 1. Preparation of biomass porous matrix materials

[0045]1) Pore-enhancing treatment of the powder: Dissolve the dry powder of Trichoderma konii in deionized water in a sterile environment, and culture it in a constant temperature incubator at 23°C for 5 days to obtain the bacterial liquid; then inoculate the bacterial liquid onto the culture medium Cultivate at 24°C for 6 days, wash with water, and filter to obtain a biomass pore-enhancing suspension; then put the crushed passion fruit vine powder and biomass pore-enhancing suspension in a co-cultivation device, seal and react at a constant temperature of 23°C for 6 days After filtering, washing and drying, porous powder is obtained; the weight ratio of the strain dry powder to deionized water is 1:50; the volume ratio of the bacterial liquid to the culture medium is 1:1000; the culture medium is potato dextrose agar ...

Embodiment 2

[0056] Embodiment 2: preparation load potassium fertilizer slow-release degradable porous material

[0057] 1. Preparation of biomass porous matrix materials

[0058] 1) Pore-enhancing treatment of the powder: Dissolve the dry powder of Trichoderma konii in deionized water in a sterile environment, and cultivate it in a constant temperature incubator at 30°C for 3 days to obtain the bacterial liquid; then inoculate the bacterial liquid onto the culture medium Cultivate at 30°C for 4 days, wash with water, and filter to obtain a biomass pore-enhancing suspension; then put the crushed passion fruit vine powder and biomass pore-enhancing suspension in a co-cultivation device, seal and shake at a constant temperature of 30°C for 4 days After filtering, washing and drying, porous powder is obtained; the weight ratio of the bacterial classification dry powder to deionized water is 1:1000; the volume ratio of the bacterial liquid to the culture medium is 1:100; the culture medium is ...

Embodiment 3

[0069] Embodiment 3: preparation load potassium fertilizer slow-release degradable porous material

[0070] 1. Preparation of biomass porous matrix materials

[0071] 1) Pore-enhancing treatment of the powder: Dissolve the dry powder of Trichoderma konii in deionized water in a sterile environment, and culture it in a constant temperature incubator at 28°C for 4 days to obtain the bacterial liquid; then inoculate the bacterial liquid onto the culture medium Cultivate at 28°C for 5 days, wash with water, and filter to obtain a biomass pore-increasing suspension; then put the crushed passion fruit vine powder and biomass pore-enhancing suspension in a co-cultivation device, seal and react at a constant temperature of 28°C for 5 days After filtering, washing and drying, porous powder is obtained; the weight ratio of the bacterial classification dry powder to deionized water is 1:500; the volume ratio of the bacterial liquid to the culture medium is 1:500; the culture medium is po...

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Abstract

The invention discloses a potash fertilizer-loaded slow-release degradable porous material and a preparation method thereof. The preparation method comprises the following steps: carrying out pore-increasing treatment on crushed passion fruit vines, and then carrying out carbonizing to obtain a biomass porous matrix material; uniformly mixing starch, sugarcane water and potato peel under stirring,and sequentially adding an oxidant, a catalyst, potassium sulfite, polyvinyl alcohol, borax and sodium hydroxide to obtain a coating material; and mixing the prepared biomass porous matrix material with a potash fertilizer solution, carrying out uniform mixing under stirring, carrying out ultrasonic treatment, uniformly mixing the obtained mixture with a coating material, carrying out spray drying by using a spray dryer, and performing screening to obtain the potash fertilizer-loaded slow-release degradable porous material. The potash fertilizer-loaded slow-release degradable porous materialprepared in the invention is a slow-release potash fertilizer which uses a biomass porous material as a carrier and is low in preparation cost, friendly to environment, degradable and longer fertilizer efficiency duration.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a slow-release and degradable porous material loaded with potassium fertilizer and a preparation method. Background technique [0002] As a chemical fertilizer, potassium fertilizer can promote photosynthesis, fruiting rate, cold resistance and disease resistance of crops, thereby increasing agricultural output. Potassium fertilizer KCl, K 2 SO 4 It is easily soluble in water. If the fertilizer is directly applied to crops, it will cause rapid loss of fertilizer and need to be fertilized again. In order to improve the utilization rate of fertilizer and the time of fertilizer effect, potassium fertilizer can be made into slow-release fertilizer. [0003] Compared with quick-acting fertilizers, slow-release fertilizers have the advantage of longer fertilizer effects. There are generally several methods for preparing slow-release fertilizers: (1) Coating the fertili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C01B32/05
CPCC05D1/00C01B32/05
Inventor 王立惠夏村村李硕卢宗柳张小文
Owner CHINA NONFERROUS METAL (GUILIN) GEOLOGY & MINING CO LTD
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