Starch-base material capable of achieving fertilizer slow release and enriching radionuclide and preparation method of material

A slow-release technology of radionuclides and fertilizers, applied in fertilizer mixtures, fertilization devices, applications, etc., to achieve the effects of improving development and utilization efficiency, improving fertilizer utilization, and easily obtaining raw materials

Inactive Publication Date: 2015-04-22
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are few research reports on this kind of biomass slow-release fertilizer materials, especially suitable for aquatic plant growth, radionuclide enrichment and purification, and slow-controlled release of fertilizers. Biomass materials have not been reported. Therefore,

Method used

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  • Starch-base material capable of achieving fertilizer slow release and enriching radionuclide and preparation method of material
  • Starch-base material capable of achieving fertilizer slow release and enriching radionuclide and preparation method of material
  • Starch-base material capable of achieving fertilizer slow release and enriching radionuclide and preparation method of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take 90 parts of cornstarch and 10 parts of urea according to the weight ratio, add them into a high-speed mixer and stir for 5 minutes, put the above blend into a twin-screw extruder, melt and blend for 10 minutes at 120 ° C and 0.5 MPa, and extrude After molding, cooling, and cutting into pellets, a cylindrical particle blend material with a diameter of 2 to 3 mm and a length of 3 to 4 mm is obtained.

Embodiment 2

[0039] Take 80 parts of cornstarch, 20 parts of urea, and 5 parts of glycerin according to the weight ratio and add them to the high-speed mixer and stir for 6 minutes. Put the above blend into the twin-screw extruder, and melt blend for 9 minutes at 110 ° C and 0.8 MPa. , extruded, cooled, and pelletized to obtain a cylindrical particle blend material with a diameter of 2 to 3 mm and a length of 3 to 4 mm.

Embodiment 3

[0041] Take 70 parts of tapioca starch, 30 parts of potassium chloride, 3 parts of polyethylene glycol, and 5 parts of polybutylene succinate according to the weight ratio and add them to the high-speed mixer and stir for 7 minutes. In a plastic machine, under 100° C. and 0.9 MPa, melt and blend for 8 minutes, extrude, cool, and pelletize to obtain a cylindrical particle blend material with a diameter of 2 to 3 mm and a length of 3 to 4 mm.

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Abstract

The invention discloses a starch-base material capable of achieving fertilizer slow release and enriching radionuclide and a preparation method of the material. The method comprises the steps of weighing, by weight 1-99 parts of starch, 1-99 parts of a fertilizer, 0-50 parts of plasticizer and 0-50 parts of fortifier and mixing and stirring for 5-20 min to obtain a mixed material; and adding the mixed material into a twin screw extruder, conducting melt blending for 5-10min under the condition that the temperature is 80-180 DEG C and the pressure is 0.1-1 MPa, extruding, molding, and pelleting after cooling to obtain the starch-base material capable of achieving fertilizer slow release and enriching radionuclide. According to the starch-base material, good mechanical performances are achieved, the slow release speed can be controlled, when the fertilizer is subjected to slow release, the radionuclide can be enriched, and the material can be widely applied to fertilizer slow release and purification of heavy metal in water and organisms which are polluted by the radionuclide.

Description

technical field [0001] The invention belongs to the utilization of biomass resources and new biomass-based materials, and relates to a starch-based material and its preparation, in particular to a starch-based material with fertilizer slow release and radionuclide enrichment and a preparation method thereof. The starch-based material of the invention is suitable for slow release of fertilizers, purification of heavy metals and radioactive nuclide pollution in soil and water, and ecological restoration systems, and has broad market prospects. Background technique [0002] Rapid economic development relies more and more on energy, and fossil resources such as petroleum and coal are becoming increasingly depleted, and vigorous development of nuclear energy has become an inevitable requirement for economic development. With the use of nuclear energy, nuclear pollution, especially radioactive wastewater pollution, will continue to increase, and the purification of nuclear-contami...

Claims

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Application Information

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IPC IPC(8): C08L3/02C05G3/00
Inventor 林晓艳苏蓉蓉陈彦罗学刚周函
Owner SOUTHWEAT UNIV OF SCI & TECH
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