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WO2024127092A1 - Composition d'engrais et son procédé de préparation - Google Patents

Composition d'engrais et son procédé de préparation Download PDF

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Publication number
WO2024127092A1
WO2024127092A1 PCT/IB2023/053119 IB2023053119W WO2024127092A1 WO 2024127092 A1 WO2024127092 A1 WO 2024127092A1 IB 2023053119 W IB2023053119 W IB 2023053119W WO 2024127092 A1 WO2024127092 A1 WO 2024127092A1
Authority
WO
WIPO (PCT)
Prior art keywords
range
fertilizer composition
composition
present disclosure
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2023/053119
Other languages
English (en)
Inventor
OTHAYOTH Suresh PUTHIYAVEETIL
Pujan Bhupendrabhai VAISHNAV
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gujarat State Fertilize And Chemicals Ltd
Original Assignee
Gujarat State Fertilize And Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gujarat State Fertilize And Chemicals Ltd filed Critical Gujarat State Fertilize And Chemicals Ltd
Publication of WO2024127092A1 publication Critical patent/WO2024127092A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C5/00—Fertilisers containing other nitrates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • C05G5/27—Dispersions, e.g. suspensions or emulsions

Definitions

  • the present disclosure relates to a fertilizer composition and a process for its preparation.
  • Plant nutrients such as nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), and the like are applied to crops to provide optimum growth and yield to the plants.
  • the plant nutrient compositions are generally available either in solid form or in liquid form. Calcium nitrate is widely used as a plant nutrient as it provides nitrogen which is a primary nutrient of the plant.
  • Solid fertilizer compositions are not readily absorbed in the soil. Rather, the solid fertilizer compositions need to be dissolved in water for better absorption by the plants. Further, the solid fertilizer compositions are not suitable for modem drip irrigation systems.
  • the commercially available liquid fertilizer compositions predominantly comprise nitrogen, phosphorous, potash, iron, manganese, zinc, copper, and boron as macronutrients. These liquid fertilizer compositions contain calcium, magnesium, and sulphur in minute quantities. Hence, these commercially available liquid fertilizer compositions fail to provide the optimum nutrition required for plant growth.
  • a well-known formulation for solutions for the plant is Hoagland's solution where a first solution includes potassium nitrate, calcium nitrate, monopotassium phosphate, magnesium sulfate, an iron chelate, and a second solution is a micronutrient stock solution that includes boric acid, manganese chloride, zinc sulfate, copper sulfate, and molybdic acid.
  • a first solution includes potassium nitrate, calcium nitrate, monopotassium phosphate, magnesium sulfate, an iron chelate
  • a second solution is a micronutrient stock solution that includes boric acid, manganese chloride, zinc sulfate, copper sulfate, and molybdic acid.
  • An object of the present disclosure to ameliorate one or more problems of the background or to at least provide a useful alternative.
  • Another object of the present disclosure is to provide a fertilizer composition.
  • Yet another object of the present disclosure is to provide a fertilizer composition in the form of suspension that is easy for handling, transportation, and has enhanced shelf life.
  • Still another object of the present disclosure is to provide a process for the preparation of fertilizer composition.
  • Still another object of the present disclosure is to provide a process for the preparation of the fertilizer composition that is simple, cost-effective, and environment friendly.
  • the present disclosure relates to a fertilizer composition and a process for its preparation.
  • the fertilizer composition comprises calcium nitrate in an amount in the range of 40 wt% to 45 wt% with respect to the total weight of the composition; magnesium nitrate in an amount in the range of 7 wt% to 15 wt% with respect to the total weight of the composition; and at least one suspending agent in the range of 0.5 wt% to 2 wt% with respect to the total weight of the composition; and q.s water.
  • the process for the preparation of a fertilizer composition comprises mixing a predetermined amount of calcium carbonate and a predetermined amount of magnesium oxide in a predetermined amount of water to obtain a mixture.
  • a predetermined amount of nitric acid is slowly added to the mixture under stirring at a first predetermined temperature for a first predetermined time period to obtain a slurry.
  • a predetermined amount of base is added to neutralize the slurry to obtain a neutralized slurry.
  • Water in the neutralized slurry is evaporated at a second predetermined temperature till the density of the neutralized slurry is in the range of 1.61 g/cm 3 to 1.64 g/cm 3 to obtain a resultant slurry.
  • a predetermined amount of a suspending agent is mixed under stirring for a second predetermined time period to obtain the fertilizer composition.
  • Figure 1 illustrates a graphical representation of the yield of chilli crop
  • Figure 2 illustrates a graphical representation of the length of the chilli.
  • Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details, are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
  • first, second, third, etc. should not be construed to limit the scope of the present disclosure as the aforementioned terms may be only used to distinguish one element, component, region, layer or section from another component, region, layer or section. Terms such as first, second, third etc., when used herein do not imply a specific sequence or order unless clearly suggested by the present disclosure.
  • Plant nutrients such as nitrogen (N), phosphorus (P), potassium (K) magnesium (Mg), and the like are applied to crops to provide optimum growth and yield to the plants.
  • the plant nutrient compositions are generally available either in solid form or in liquid form. Calcium nitrate is widely used as a plant nutrient as it provides nitrogen which is a primary nutrient of plant
  • Solid fertilizer compositions are not readily absorbed in the soil. Further, the solid fertilizer compositions are not suitable for modem drip irrigation systems.
  • the commercially available liquid fertilizer compositions predominantly comprise nitrogen, phosphorous, potash, iron, manganese, zinc, copper, and boron as macronutrients. These liquid fertilizer compositions contain calcium, magnesium, and sulphur in minute quantities. Hence, these commercially available liquid fertilizer compositions fail to provide the optimum nutrition required for plant growth.
  • a well-known formulation for solutions for the plant is Hoagland's solution where a first solution includes potassium nitrate, calcium nitrate, monopotassium phosphate, magnesium sulfate, an iron chelate, and a second solution is a micronutrient stock solution that includes boric acid, manganese chloride, zinc sulfate, copper sulfate, and molybdic acid.
  • this two-solution or two-container approach requires that, in order to provide a complete nutrient feed, one must mix two separate concentrates and dilute each in a user solution to avoid precipitation. From a commercial distribution perspective, one may have to ship sufficient water along with the concentrate in that the water increases handling costs and is an expensive fertilizer.
  • the present disclosure provides a fertilizer composition and process for its preparation.
  • the fertilizer composition of the present disclosure delivers a higher concentration of Calcium, Nitrogen, and Magnesium to the plants.
  • a fertilizer composition In an aspect of the present disclosure, there is provided a fertilizer composition.
  • the fertilizer composition comprises calcium nitrate in an amount in the range of 40 wt% to 45 wt% with respect to the total weight of the composition; magnesium nitrate in an amount in the range of 7 wt% to 15 wt% with respect to the total weight of the composition; at least one suspending agent in an amount in the range of 0.5 wt% to 2 wt% with respect to the total weight of the composition; and q.s. water.
  • the suspending agent is at least one selected from the group consisting of xanthan gum, xanthan gum gel, carboxymethyl cellulose, guar gum, agar-agar, starch, Tersperse 2700 and unflavored gelatin.
  • the suspending agent is xanthan gum gel.
  • the suspending agent is starch.
  • the suspending agent is Tersperse 2700 (an acid resin copolymer).
  • the density of the fertilizer composition is in the range of 1.52 g/cm 3 to 1.54 g/cm 3 . In an exemplary embodiment, the density of the fertilizer composition is 1.53 g/cm 3 . In another exemplary embodiment, the density of the fertilizer composition is 1.52 g/cm 3
  • the density of the fertilizer composition is critical in maintaining the stability of the suspension.
  • the specific density of the fertilizer composition is achieved when each of the components in the composition is present in the specified range. If the density is lower than the specified range, then the elemental analysis of the fertilizer composition shows a lower concentration of desired elements. If the density is higher than the specified range, then solid material sediments from the slurry and the suspension form of the fertilizer cannot be achieved.
  • the reaction being a stoichiometric reaction, the proportion of ingredients is very critical, any variation in the proportion of the reactants, the reaction will not be complete and lead to an unstable composition.
  • the fertilizer composition is in the form selected from suspension and dispersion.
  • the fertilizer composition is characterized by having water soluble calcium in the range of 12 wt% to 18 wt%, magnesium in the range of 1 wt% to 3 wt% and nitrogen in the range of 8 wt% to 12 wt%.
  • a predetermined amount of calcium carbonate and a predetermined amount of magnesium oxide are mixed in a predetermined amount of water to obtain a mixture.
  • the predetermined amount of calcium carbonate is in the range of 40 wt% to 60 wt% with respect to the total weight of the mixture. In an exemplary embodiment, the predetermined amount of calcium carbonate is 47 wt% with respect to the total weight of the mixture. In another exemplary embodiment, the predetermined amount of calcium carbonate is 46.5 wt% with respect to the total weight of the mixture.
  • the predetermined amount of magnesium oxide is in the range of 1 wt% to 5 wt% with respect to the total weight of the mixture. In an exemplary embodiment, the predetermined amount of magnesium oxide is 3 wt% with respect to the total weight of the mixture. In another exemplary embodiment, the predetermined amount of magnesium oxide is 3.5 wt% with respect to the total weight of the mixture.
  • the predetermined amount of water is in the range of 40 wt% to 60 wt% with respect to the total weight of the mixture. In an exemplary embodiment, the predetermined amount of water is 50 wt% with respect to the total weight of the mixture.
  • a predetermined amount of nitric acid is slowly added under stirring to the mixture at a first predetermined temperature for a first predetermined time period to obtain a slurry.
  • the nitric acid is a spent nitric acid.
  • a weight ratio of nitric acid to calcium carbonate is in the range of 1:0.41 to 1:0.45. In an exemplary embodiment, the ratio of nitric acid to calcium carbonate is 1:0.43. In another exemplary embodiment, the ratio of nitric acid to calcium carbonate is 1:0.42.
  • the first predetermined temperature is in the range of 40°C to 100°C. In an exemplary embodiment, the first predetermined temperature is 80°C.
  • the first predetermined time period is in the range of 20 minutes to 120 minutes. In an exemplary embodiment, the first predetermined time period is 30 minutes.
  • the slurry is neutralized by using a predetermined amount of at least one base to obtain a neutralized slurry.
  • the base is selected from the group consisting of ammonia and ammonium hydroxide.
  • the base is ammonium hydroxide.
  • the weight ratio of the slurry to the base is in the range of 1:0.035 to 1:0.075. In an exemplary embodiment, the weight ratio of the base to the slurry is 1:0.061. In another exemplary embodiment, the weight ratio of the base to the slurry is 1:0.045.
  • the so obtained slurry is neutralized by adding ammonium hydroxide to obtain a neutralized slurry having a pH in the range of 7.0 to 7.3.
  • the pH of the neutralized slurry is 7.1.
  • the pH of the neutralized slurry is 7.2.
  • the neutralized slurry is heated to evaporate water at a second predetermined temperature till the density of the neutralized slurry is in the range of 1.61 g/cm 3 to 1.64 g/cm 3 to obtain a resultant slurry.
  • the second predetermined temperature is in the range of 85°C to 120°C. In an exemplary embodiment of the present disclosure, the second predetermined temperature is 105 °C
  • the density of the resultant slurry is 1.625 g/cm 3 . In another exemplary embodiment, the density of the resultant slurry is 1.63 g/cm 3 .
  • a predetermined amount of suspending agent is mixed with the resultant slurry under stirring for a second predetermined time period to obtain the fertilizer composition.
  • the suspending agent is at least one selected from the group consisting of xanthan gum gel, carboxymethyl cellulose guar gum, agar-agar, starch, Tersperse 2700 and unflavored gelatin.
  • the suspending agent is xanthan gum gel.
  • the suspending agent is starch.
  • the suspending agent is Tersperse 2700.
  • the weight ratio of the resultant slurry to the suspending agent is in the range of 1:0.05 to 1:0.15. In an exemplary embodiment, the weight ratio of the resultant shiny to the suspending agent is 1:0.11.
  • the second predetermined time period is in the range of 20 minutes to 40 minutes. In an exemplary embodiment, the second predetermined time period is 30 minutes.
  • the fertilizer composition of the present disclosure is in suspension form which makes it easy for handling and transportation.
  • the fertilizer composition of the present disclosure when applied to the plants, increased yield and growth is observed.
  • the fertilizer composition of the present disclosure was subjected to elemental analysis and the results obtained are provided in Table 1.
  • Experiment 2 Preparation of the fertilizer composition in accordance with the present disclosure. 600 g of calcium carbonate (94% pure) and 45 g of magnesium oxide (95 % pure) were mixed in 645 g of water under stirring to obtain a mixture. To the mixture, 1440 g of nitric acid (60% strength) was slowly added under stirring at 80°C for 30 minutes to obtain a slurry (2430 g). The so obtained slurry was neutralized by adding 110 g of ammonium hydroxide (24% strength) to obtain a neutralized slurry having a pH of 7.2.
  • the neutralized slurry was heated at 105°C to evaporate the water, till the density of the neutralized slurry reaches to 1.63 g/cm 3 to obtain a resultant slurry (1800 gm).
  • 200 gm of 1% xanthan gum gel was added under stirring for 30 minutes to obtain the fertilizer composition.
  • the fertilizer composition of the present disclosure was subjected to elemental analysis and the results obtained are provided in Table 2.
  • Experiment 3 - 6 Preparation of the fertilizer composition in accordance with the present disclosure.
  • the fertilizer composition was prepared similar to the process disclosed in Experiment 1, by varying the Calcium carbonate, Magnesium oxide, Nitric acid, Ammonium hydroxide, and suspending agent the results are provided below in Table-3.
  • the concentrations of the two products are so chosen to provide equal amount of calcium as per standard requirement for the chilli crop.
  • Similar amount of fertilizer composition and calcium nitrate solutions were applied on 40 and 80 DATP (days after transplantation).
  • Table 4 indicates the yield of chilli crop and length (growth) of chilli for the specified plot size (i.e. 12 square meter).
  • the fertilizer composition of the present disclosure provides enhanced yield and growth as compared to the use of the calcium nitrate solution.
  • the present disclosure described herein has several technical advantages including, but not limited to, the realization of a fertilizer composition that is: is easy for handling and transportation; is effective for the growth of plants;
  • - has a higher concentration of Ca, N, and Mg; and contains magnesium in the suspension form that is readily available for the plant; and a process for preparing a fertilizer composition is simple and efficient; and does not require a drying crystallization step.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)

Abstract

La présente invention concerne une composition d'engrais et son procédé de préparation. La composition d'engrais de la présente invention présente une efficacité améliorée, ce qui permet d'obtenir une croissance et un rendement améliorés de la culture. La composition d'engrais de la présente invention est facile à manipuler, à transporter et à appliquer. Le procédé de préparation de la composition d'engrais est simple, économique et respectueux de l'environnement.
PCT/IB2023/053119 2022-12-16 2023-03-29 Composition d'engrais et son procédé de préparation Ceased WO2024127092A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202221072949 2022-12-16
IN202221072949 2022-12-16

Publications (1)

Publication Number Publication Date
WO2024127092A1 true WO2024127092A1 (fr) 2024-06-20

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ID=91484461

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006225175A (ja) * 2005-02-15 2006-08-31 Sumitomo Chemical Co Ltd 透明液体肥料の製造方法
EP2268594B1 (fr) * 2008-03-11 2018-10-10 Lawrence Brooke Engineering, Llc. Suspension d engrais et procédé de préparation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006225175A (ja) * 2005-02-15 2006-08-31 Sumitomo Chemical Co Ltd 透明液体肥料の製造方法
EP2268594B1 (fr) * 2008-03-11 2018-10-10 Lawrence Brooke Engineering, Llc. Suspension d engrais et procédé de préparation

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