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CN-122010607-A - Functional expandable carrier-based reactants for reducing methane produced in soil and fertilizer compositions containing same

CN122010607ACN 122010607 ACN122010607 ACN 122010607ACN-122010607-A

Abstract

The invention relates to an expandable carrier-based functional reactant for reducing methane generated in soil and a fertilizer composition comprising the same, in particular to an expandable carrier-based functional reactant, a preparation method thereof and a fertilizer comprising the same, which are characterized in that the functional reactant comprises an expandable carrier and a functional substance contained in the carrier, wherein the expandable carrier is pre-expanded. According to the present invention, the expandable carrier-based functional reactant and fertilizer comprising the same of the present invention are excellent in reducing methane generated in soil, and the temperature of the carrier can be increased by the reaction between each component and moisture, thereby improving the expansibility of the carrier and the activation of catalytically active metals, whereby the methane reducing effect can be maximized, and the sedimentation function and the slow release function of the fertilizer in soil are enhanced, thereby having the advantage of being able to maintain the methane reducing function for a long period of time.

Inventors

  • JIN YUQIAN
  • Jin Junqian
  • TIAN JINGXI
  • LI HUILAN
  • JIN YUQING
  • JIN YONGHUAN
  • Jin Caiyuan

Assignees

  • 考特格林农业会社法人株式会社

Dates

Publication Date
20260512
Application Date
20241128
Priority Date
20241111

Claims (11)

  1. 1. A functional reactant based on an expandable carrier, characterized in that, Comprises an expandable carrier, and A functional substance contained in the carrier; wherein the expandable carrier is pre-expanded.
  2. 2. The expandable carrier-based functional reactant of claim 1, The expandable carrier is a perlite based expandable carrier.
  3. 3. The expandable carrier-based functional reactant of claim 1, The functional substance contained in the carrier is a catalytically active metal for reducing methane or a substance for supplying nutrients to plants.
  4. 4. The expandable carrier-based functional reactant of claim 3, The catalytically active metals for methane reduction include copper and iron oxide.
  5. 5. The expandable carrier-based functional reactant of claim 2, The catalytically active metal comprises 5 to 10% by weight of copper and 10 to 15% by weight of iron oxide, based on 100% by weight of the functional reactant based on the expandable carrier, And the total amount of copper and iron oxide is 10 to 20 wt% based on 100 wt% of the functional reactant based on the expandable carrier.
  6. 6. The expandable carrier-based functional reactant of claim 1, The specific gravity of the functional reactant based on the expandable carrier is 1 to 3.
  7. 7. The expandable carrier-based functional reactant of claim 1, The specific gravity of the functional reactant based on the expandable carrier is 1 to 1.2.
  8. 8. A fertilizer, comprising: the expandable carrier-based functional reactant for reducing methane according to claim 1, and a phytonutrient material.
  9. 9. A method of preparing an expandable carrier-based functional reactant according to claim 1, comprising: Step 1, a step of heat-treating the expandable support at a temperature of 800 to 1000 ℃ to expand it to 50 to 70% to obtain an expanded support, and And 2, coating functional substances on the outer surface and in pores of the obtained expanded carrier.
  10. 10. The method for preparing a functional reactant based on an expandable carrier according to claim 9, The expandable carrier is a perlite based expandable carrier.
  11. 11. The method for preparing a functional reactant based on an expandable carrier according to claim 9, The functional substance contained in the carrier is a catalytically active metal for reducing methane or a substance for supplying nutrients to plants.

Description

Functional expandable carrier-based reactants for reducing methane produced in soil and fertilizer compositions containing same Technical Field The present invention relates to a fertilizer composition, in particular to an expandable carrier based functional reactant for reducing methane produced in soil and a fertilizer composition comprising the same. Background Since rice grows in fresh water in paddy fields, a large amount of methane is generated by organic decomposition during rice cultivation. It is known that approximately 60% of farmlands in korea are paddy fields, and a large amount of methane generated in fresh water paddy fields has a global warming potential (global warming potential) about 24 times higher than that of carbon dioxide (CO 2). In the background that global warming problems are becoming serious and the pressure of the international society for reducing the emission of greenhouse gases by climate agreements or the like is increasing, there is an urgent need to formulate measures for reducing the emission of methane in paddy fields. One of methods for effectively reducing methane production in rice fields during rice cultivation is to inhibit the activity of methanogens (methanogens) by effectively reducing the amount of active electrons increased by the reduced state of fresh water production. The addition of the electron acceptor can effectively inhibit the activity of the active electrons. In the rice cultivation process, electron acceptors applicable to paddy soil include Fe 3+、Mn4+、SO42- and NO 3- ions, etc., and the use of a soil conditioner containing a large amount of these electron acceptors can effectively reduce methane production. Therefore, the slag siliceous fertilizer is most widely used, which not only improves the growth and yield of rice, but also can reduce the production of methane. However, the purpose of the development of this slag siliceous fertilizer is to improve the growth and yield of rice, and therefore, there is an urgent need for the development of a novel fertilizer which can effectively reduce the production of methane. Japanese laid-open patent No. 2005-177646 (published 7 month and 7 2005) discloses a method of forming an aerobic coating layer of pore water having a pH of 8 or more by coating a water bottom where an organic matter-containing bottom sludge is deposited with blast furnace water quenched slag, thereby preventing methane gas from being generated in the water bottom. However, since the blast furnace slag contains a small amount of inorganic ions (iron content of 1% or less, manganese oxide content of 0.5% or less, sulfate ion content of 2% or less) which can be electron acceptors, the effect of reducing methane production is hardly obtained when the slag siliceous fertilizer is applied to the soil as a main raw material. And, korean patent No. 10-0829438 (date of approval is 5/7/2008) relates to a siliceous fertilizer composition for reducing methane gas production in soil and a method for reducing methane gas production in soil using the same, that is, to a siliceous fertilizer composition for reducing methane gas production in soil comprising i) 50 to 95% by weight of blast furnace slag, and ii) 5 to 50% by weight of an electron acceptor component selected from the group consisting of steelmaking slag, gypsum, phosphogypsum, coal ash and mixtures thereof, and a method for reducing methane gas production using the same for crop cultivation soil. The siliceous fertilizer composition of the present invention exhibits the effect of increasing the yield by promoting the growth of crops, and at the same time, it is described that the activity of methanogens can be suppressed by decreasing the activity of active electrons in soil, thereby effectively reducing the methane gas generation. However, this does not teach or suggest a naturally expandable support and a catalytically active metal coated thereon. Also, korean patent No. 10-2314179 (grant date 2021, 10-12) relates to a fertilizer composition for reducing methane gas generation comprising ethephon as an active ingredient and its use, and describes that the fertilizer composition of the above-described invention is excellent in effect of reducing the discharge amount of methane gas discharged in crop cultivation soil without affecting the growth and quantity of crops, and can reduce fertilizer application to one time, thereby not only saving labor, but also preventing environmental pollution. However, natural expandable carriers and catalytically active metals coated thereon are not taught or suggested. As described above, the prior art has problems of limited methane reduction effect or low economic efficiency. Accordingly, there is a need for a suitable improvement of the slag siliceous fertilizer currently supplied in the country to improve paddy soil, thereby developing a method capable of effectively reducing methane gas generation. In order to solve this problem, the present invent