WO2009125093A2 - Fertilizer based on a porous material - Google Patents

Fertilizer based on a porous material Download PDF

Info

Publication number
WO2009125093A2
WO2009125093A2 PCT/FR2009/000325 FR2009000325W WO2009125093A2 WO 2009125093 A2 WO2009125093 A2 WO 2009125093A2 FR 2009000325 W FR2009000325 W FR 2009000325W WO 2009125093 A2 WO2009125093 A2 WO 2009125093A2
Authority
WO
WIPO (PCT)
Prior art keywords
water
porous material
fertilizer
minutes
immersed
Prior art date
Application number
PCT/FR2009/000325
Other languages
French (fr)
Other versions
WO2009125093A3 (en
Inventor
Serge Bensaid
Original Assignee
Serge Bensaid
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 Serge Bensaid filed Critical Serge Bensaid
Priority to EP09730195A priority Critical patent/EP2271599A2/en
Publication of WO2009125093A2 publication Critical patent/WO2009125093A2/en
Publication of WO2009125093A3 publication Critical patent/WO2009125093A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses

Definitions

  • the present invention relates to fertilizers and processes for their production.
  • the invention is a fertilizer of high efficiency and non-polluting, because it is practically not leachable.
  • the process for producing the fertilizer according to the invention is characterized in that a sample of 200 grams of porous granular material with a diameter of between 2 and 4 mm and preferably between 2 and 4 mm is taken. 3 mm, which is immersed in 1 liter of a 13% aqueous solution of ammonia in volume for 5 minutes, the porous material is removed from the solution, drained on a sieve for 10 minutes, immersed the porous material drained in 300 cm 3 of water for 5 minutes, the ammonia nitrogen content of the water is determined and, if the nitrogen content is greater than 3.2 mg / l, the porous material is discarded, while if it is less than 3.2 mg / l, 1.5 volumes to 2.3 volumes of porous material are immersed in a volume of an aqueous or acidic solution having a nitrogen content of 5 to 50 grams per 100 grams of water and leave the porous material in the solution until it is completely absorbed by the porous material, note for 2 to 8 hours to obtain the fertilizer.
  • a sample of 200 grams of porous granular material having a diameter of between 2 and 4 mm and preferably of between 2 and 3 mm is taken. it is immersed in 1 liter of a 13% aqueous ammonia solution for 5 minutes, the porous material is removed from the solution, it is sieved for 10 minutes, the porous material is immersed in 300 cm 3 of water for 5 minutes, determines the ammonia nitrogen content of the water and, if the nitrogen content is greater than 3.2 mg / 1, the porous material is discarded, whereas, if it is less than 3.2 mg / 1, it is immersed from 1.5 volume to 2.3 volume of porous material in a volume of an aqueous or acidic solution having a phosphorus content of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until at total absorption thereof by the porous material, especially for 2 to 8 hours, to obtain the fertilizer.
  • the fertilizer In order for the fertilizer also to contain potassium, a sample of 200 grams of porous granular material with a diameter of between 2 and 4 mm and preferably between 2 and 3 mm, which is immersed in 1 liter of an aqueous solution of ammonia at 13% by volume for 5 minutes, the porous material is removed, drained on a sieve for 10 minutes, the porous material drained into 300 cm 3 of water is immersed 5 minutes, the ammonia nitrogen content of the water is determined and, if the nitrogen content is greater than 3.2 mg / l, the porous material is rejected, whereas, if it is less than 3.2 mg / l, 1, 1.5 volumes to 2.3 volumes of porous material are immersed in a volume of an aqueous or acidic solution having a potassium content of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until total absorption thereof by the porous material, especially for 2 to 8 hours to obtain the fertilizer.
  • a fertilizer is thus obtained which will release the constituents N, P and K it contains only under the action of the plants, but not naturally, for example by leaching. There will be no nitrate. The fertilizer is not polluting.
  • porous materials were suitable while others are not suitable.
  • Certain porous materials which satisfy the test mentioned above are therefore suitable.
  • these porous materials are particularly suitable some pumice stones, but not all.
  • Particularly suitable are those with a polyhedral or pseudopolyhedral structure and in the same way certain active carbons having incuits.
  • the diameter of the grains should preferably be less than 3 mm, so that the pores of the porous material always open towards the outside and that plants have access.
  • their diameter is considered to be the average of their largest dimension and their smallest dimension.
  • acidic solution a sulfuric, phosphoric or nitric solution is especially used.
  • a nitrogenous compound, a phosphorus compound and a potassium compound are dissolved in the solution.
  • the nitrogen compound it is possible to use in particular urea, ammonia, as the phosphorus compound of phosphoric acid and, as a potassium compound, a sulphate.
  • Ammonia nitrogen is measured by forming a colored complex with ammonium (Berthelot reaction).
  • the subject of the invention is also a granular fertilizer with a diameter of between 2 and 4 mm, preferably between 2 and 3 mm, comprising a porous closed-cell material containing from 10 to 60 grams of nitrogen per liter and characterized in that it satisfies the following test: when we immerse 2 liters of the fertilizer in 4 liters of water for 15 minutes, then the fertilizer is removed from the water by allowing the water to adhere to it for 20 minutes above the water initially used, the final ammonia nitrogen content of the water. water is less than 3 mg / l.
  • the fertilizer which contains phosphorus is characterized in that it satisfies the following test: when 2 liters of the fertilizer are immersed in 4 liters of water for 15 minutes, then the fertilizing the water by allowing the water to adhere to it for 20 minutes above the water used initially, the final phosphorus content of the water is less than 3 mg / 1.
  • the fertilizer comprising potassium is characterized in that it satisfies the following test: when immersing 2 liters of the fertilizer in 4 liters of water for 15 minutes, then the fertilizer is removed water allowing water to adhere to it for 20 minutes above the water initially used, the final potassium content of the water is less than 3 mg / l.
  • fertilizer consisting of the closed-cell porous material containing nitrogen and, preferably, phosphorus and potassium
  • compost granules of green waste comprising station sludge. treatment.
  • the granules have, in particular, diameters of between 5 and 10 mm.
  • latrine defecations whose nitrogen contents are 5 to 8 times higher than those of the composts mentioned above.
  • the interest of this mixture is the following.
  • the rootlets young plants are too big to remove fertilizer elements that are nitrogen, potassium and phosphorus in the pores of the fertilizer according to the invention. On the other hand, they easily remove it from compost or latrine defecation until the plant develops a finer mycelium that is able to extract the nutrients contained in the porous material.
  • the porous material of the fertilizer according to the invention is able to take up water, which prevents the hydric stress of the plants, while the sludge provides the organic matter necessary for soil maintenance so that the peasant, by a single passage, provides the ground with all the elements he needs.
  • the peasant no longer needs, in a first pass, to bring the elements N, P, K, in a second passage, to water and in a third passage, to bring the organic matter.
  • an improved fertilizer according to the invention comprising the porous material according to the invention and the granules, instead of a passage of 350 kilos of fertilizer and a second pass of 500 kilos of organic matter per hectare.
  • the porous material forming the fertilizer according to the invention is mixed at a rate of 1 volume per 0.7 to 1.5 volumes of compost grains.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

Fertilizer comprising a closed-cell porous material made of grains having a diameter between 2 and 4 mm and, preferably, between 2 and 3 mm, and containing from 10 to 60 grams of nitrogen per litre.

Description

ENGRAIS A BASE D'UNE MATIERE POREUSE La présente invention se rapporte aux engrais et à leurs procédés de production. The present invention relates to fertilizers and processes for their production.
L'invention vise un engrais d'une grande efficacité et non polluant, parce qu'il n'est pratiquement pas lixiviable.The invention is a fertilizer of high efficiency and non-polluting, because it is practically not leachable.
Le procédé de production de l'engrais suivant l'invention est caractérisé en ce que l'on prend un échantillon de 200 grammes de matière poreuse en grains d'un diamètre compris entre 2 et 4 mm et, de préférence, compris entre 2 et 3 mm, que l'on immerge dans 1 litre d'une solution aqueuse d'ammoniac à 13 % en volume pendant 5 minutes, on retire la matière poreuse de la solution, on l'égoutte sur un tamis pendant 10 minutes, on immerge la matière poreuse égouttée dans 300 cm3 d'eau pendant 5 minutes, on détermine la teneur en azote ammoniacal de l'eau et, si la teneur en azote est supérieure à 3,2 mg/1, on rejette la matière poreuse, tandis que, si elle est inférieure à 3,2 mg/1, on immerge de 1,5 volume à 2,3 volume de matière poreuse dans un volume d'une solution aqueuse ou acide ayant une teneur en azote de 5 à 50 grammes par 100 grammes d'eau et on laisse la matière poreuse dans la solution jusqu'à absorption totale de celle-ci par la matière poreuse, notamment pendant 2 à 8 heures, pour obtenir l'engrais.The process for producing the fertilizer according to the invention is characterized in that a sample of 200 grams of porous granular material with a diameter of between 2 and 4 mm and preferably between 2 and 4 mm is taken. 3 mm, which is immersed in 1 liter of a 13% aqueous solution of ammonia in volume for 5 minutes, the porous material is removed from the solution, drained on a sieve for 10 minutes, immersed the porous material drained in 300 cm 3 of water for 5 minutes, the ammonia nitrogen content of the water is determined and, if the nitrogen content is greater than 3.2 mg / l, the porous material is discarded, while if it is less than 3.2 mg / l, 1.5 volumes to 2.3 volumes of porous material are immersed in a volume of an aqueous or acidic solution having a nitrogen content of 5 to 50 grams per 100 grams of water and leave the porous material in the solution until it is completely absorbed by the porous material, note for 2 to 8 hours to obtain the fertilizer.
De préférence, pour que l'engrais contienne aussi du phosphore, on prend un échantillon de 200 grammes de matière poreuse en grains d'un diamètre compris entre 2 et 4 mm et, de préférence, compris entre 2 et 3 mm, que l'on immerge dans 1 litre d'une solution aqueuse d'ammoniac à 13 % en volume pendant 5 minutes, on retire la matière poreuse de la solution, on l'égoutte sur un tamis pendant 10 minutes, on immerge la matière poreuse égouttée dans 300 cm3 d'eau pendant 5 minutes, on détermine la teneur en azote ammoniacal de l'eau et, si la teneur en azote est supérieure à 3,2 mg/1, on rejette la matière poreuse, tandis que, si elle est inférieure à 3,2 mg/1, on immerge de 1,5 volume à 2,3 volume de matière poreuse dans un volume d'une solution aqueuse ou acide ayant une teneur en phosphore de 5 à 50 grammes par 100 grammes d'eau et on laisse la matière poreuse dans la solution jusqu'à absorption totale de celle-ci par la matière poreuse, notamment pendant 2 à 8 heures, pour obtenir l'engrais.Preferably, in order for the fertilizer also to contain phosphorus, a sample of 200 grams of porous granular material having a diameter of between 2 and 4 mm and preferably of between 2 and 3 mm, is taken. it is immersed in 1 liter of a 13% aqueous ammonia solution for 5 minutes, the porous material is removed from the solution, it is sieved for 10 minutes, the porous material is immersed in 300 cm 3 of water for 5 minutes, determines the ammonia nitrogen content of the water and, if the nitrogen content is greater than 3.2 mg / 1, the porous material is discarded, whereas, if it is less than 3.2 mg / 1, it is immersed from 1.5 volume to 2.3 volume of porous material in a volume of an aqueous or acidic solution having a phosphorus content of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until at total absorption thereof by the porous material, especially for 2 to 8 hours, to obtain the fertilizer.
Pour que l'engrais contienne aussi du potassium, on prend un échantillon de 200 grammes de matière poreuse en grains d'un diamètre compris entre 2 et 4 mm et, de préférence, compris entre 2 et 3 mm, que l'on immerge dans 1 litre d'une solution aqueuse d'ammoniac à 13 % en volume pendant 5 minutes, on retire la matière poreuse, on l'égoutte sur un tamis pendant 10 minutes, on immerge la matière poreuse égouttée dans 300 cm3 d'eau pendant 5 minutes, on détermine la teneur en azote ammoniacal de l'eau et, si la teneur en azote est supérieure à 3,2 mg/1, on rejette la matière poreuse, tandis que, si elle est inférieure à 3,2 mg/1, on immerge de 1,5 volume à 2,3 volume de matière poreuse dans un volume d'une solution aqueuse ou acide ayant une teneur en potassium de 5 à 50 grammes par 100 grammes d'eau et on laisse la matière poreuse dans la solution jusqu'à absorption totale de celle-ci par la matière poreuse, notamment pendant 2 à 8 heures pour obtenir l'engrais.In order for the fertilizer also to contain potassium, a sample of 200 grams of porous granular material with a diameter of between 2 and 4 mm and preferably between 2 and 3 mm, which is immersed in 1 liter of an aqueous solution of ammonia at 13% by volume for 5 minutes, the porous material is removed, drained on a sieve for 10 minutes, the porous material drained into 300 cm 3 of water is immersed 5 minutes, the ammonia nitrogen content of the water is determined and, if the nitrogen content is greater than 3.2 mg / l, the porous material is rejected, whereas, if it is less than 3.2 mg / l, 1, 1.5 volumes to 2.3 volumes of porous material are immersed in a volume of an aqueous or acidic solution having a potassium content of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until total absorption thereof by the porous material, especially for 2 to 8 hours to obtain the fertilizer.
On obtient ainsi un engrais qui ne libérera les constituants N, P et K qu'il contient que sous l'action des plantes, mais non naturellement, par exemple par lixiviation. Il n'y aura pas de nitrate. L'engrais n'est pas polluant.A fertilizer is thus obtained which will release the constituents N, P and K it contains only under the action of the plants, but not naturally, for example by leaching. There will be no nitrate. The fertilizer is not polluting.
On a en effet constaté, d'une manière surprenante, que certaines matières poreuses convenaient alors que d'autres ne conviennent pas. Conviennent donc certaines matières poreuses qui satisfont à l'essai mentionné ci-dessus. Parmi ces matières poreuses, conviennent notamment certaines pierres ponces, mais pas toutes. Conviennent, en particulier celles à structure polyédrique ou pseudopolyédrique et de la même façon certains charbons actifs ayant des incuits.We have indeed found, in a way surprising that some porous materials were suitable while others are not suitable. Certain porous materials which satisfy the test mentioned above are therefore suitable. Among these porous materials, are particularly suitable some pumice stones, but not all. Particularly suitable are those with a polyhedral or pseudopolyhedral structure and in the same way certain active carbons having incuits.
Pour que les plantes puissent néanmoins retirer les constituants N, P et K de l'engrais, il convient que le diamètre des grains soit, de préférence, inférieur à 3 mm, de sorte que les pores de la matière poreuse débouchent toujours vers l'extérieur et que les plantes y aient accès. Lorsque les grains ne sont pas sphériques, on considère que leur diamètre est la moyenne de leur plus grande dimension et de leur plus petite dimension.In order for the plants to nevertheless be able to remove the constituents N, P and K from the fertilizer, the diameter of the grains should preferably be less than 3 mm, so that the pores of the porous material always open towards the outside and that plants have access. When the grains are not spherical, their diameter is considered to be the average of their largest dimension and their smallest dimension.
Comme solution acide, on utilise notamment une solution sulfurique, phosphorique ou nitrique.As acidic solution, a sulfuric, phosphoric or nitric solution is especially used.
On dissout dans la solution un composé azoté, un composé phosphore et un composé potassique.A nitrogenous compound, a phosphorus compound and a potassium compound are dissolved in the solution.
Comme composé azoté, on peut utiliser notamment de l'urée, de l'ammoniaque, comme composé phosphore de l'acide phosphorique et, comme composé potassique, un sulfate . Le dosage de l'azote ammoniacal s'effectue par formation d'un complexe coloré avec l'ammonium (réaction de Berthelot) .As the nitrogen compound, it is possible to use in particular urea, ammonia, as the phosphorus compound of phosphoric acid and, as a potassium compound, a sulphate. Ammonia nitrogen is measured by forming a colored complex with ammonium (Berthelot reaction).
L'invention a aussi pour objet un engrais en grains de diamètre compris entre 2 et 4 mm, de préférence, entre 2 et 3 mm, comprenant une matière poreuse à cellules fermées contenant de 10 à 60 grammes d'azote par litre et caractérisé en ce qu'il satisfait à l'essai suivant : lorsque l'on immerge 2 litres de l'engrais dans 4 litres d'eau pendant 15 minutes, puis on retire l'engrais de l'eau en laissant s ' égoutter l'eau y adhérent pendant 20 minutes au-dessus de l'eau utilisée initialement, la teneur finale en azote ammonacial de l'eau est inférieure à 3 mg/1.The subject of the invention is also a granular fertilizer with a diameter of between 2 and 4 mm, preferably between 2 and 3 mm, comprising a porous closed-cell material containing from 10 to 60 grams of nitrogen per liter and characterized in that it satisfies the following test: when we immerse 2 liters of the fertilizer in 4 liters of water for 15 minutes, then the fertilizer is removed from the water by allowing the water to adhere to it for 20 minutes above the water initially used, the final ammonia nitrogen content of the water. water is less than 3 mg / l.
De préférence, l'engrais gui contient du phosphore est caractérisé en ce gu'il satisfait à l'essai suivant : lorsgue l'on immerge 2 litres de l'engrais dans 4 litres d'eau pendant 15 minutes, puis on retire l'engrais de l'eau en laissant s ' égoutter l'eau y adhérent pendant 20 minutes au-dessus de l'eau utilisée initialement, la teneur finale en phosphore de l'eau est inférieure à 3 mg/1. De préférence, l'engrais comprenant du potassium est caractérisé en ce qu'il satisfait à l'essai suivant : lorsque l'on immerge 2 litres de l'engrais dans 4 litres d'eau pendant 15 minutes, puis on retire l'engrais de l'eau en laissant s 'égoutter l'eau y adhérent pendant 20 minutes au-dessus de l'eau utilisée initialement, la teneur finale en potassium de l'eau est inférieure à 3 mg/1.Preferably, the fertilizer which contains phosphorus is characterized in that it satisfies the following test: when 2 liters of the fertilizer are immersed in 4 liters of water for 15 minutes, then the fertilizing the water by allowing the water to adhere to it for 20 minutes above the water used initially, the final phosphorus content of the water is less than 3 mg / 1. Preferably, the fertilizer comprising potassium is characterized in that it satisfies the following test: when immersing 2 liters of the fertilizer in 4 liters of water for 15 minutes, then the fertilizer is removed water allowing water to adhere to it for 20 minutes above the water initially used, the final potassium content of the water is less than 3 mg / l.
Suivant un mode de réalisation, on mélange à l'engrais constitué de la matière poreuse à cellules fermées contenant de l'azote et, de préférence, du phosphore et du potassium, des granulés de compost de déchets verts comprenant des boues de station d'épuration. Les granulés ont, notamment, des diamètres compris entre 5 et 10 mm. Au lieu de mélanger à ces composts, on peut mélanger aussi à des défécations de latrines, dont les teneurs en azote sont 5 à 8 fois supérieures à celles des composts mentionnés ci-dessus. L'intérêt de ce mélange est le suivant. Les radicelles des jeunes plantes sont trop grosses pour aller retirer des éléments fertilisants que sont l'azote, le potassium et le phosphore dans les pores de l'engrais suivant l'invention. Elles le retirent en revanche facilement du compost ou des défécations de latrines jusqu'à ce que la plante développe du mycélium plus fin qui lui est capable d'extraire les éléments fertilisants contenus dans la matière poreuse.According to one embodiment, fertilizer consisting of the closed-cell porous material containing nitrogen and, preferably, phosphorus and potassium, is mixed with compost granules of green waste comprising station sludge. treatment. The granules have, in particular, diameters of between 5 and 10 mm. Instead of mixing with these composts, it is also possible to mix with latrine defecations, whose nitrogen contents are 5 to 8 times higher than those of the composts mentioned above. The interest of this mixture is the following. The rootlets young plants are too big to remove fertilizer elements that are nitrogen, potassium and phosphorus in the pores of the fertilizer according to the invention. On the other hand, they easily remove it from compost or latrine defecation until the plant develops a finer mycelium that is able to extract the nutrients contained in the porous material.
En outre, la matière poreuse de l'engrais suivant l'invention est apte à reprendre de l'eau, ce qui empêche le stress hydrique des plantes, tandis que les boues apportent la matière organique nécessaire à l'entretien des sols de sorte que le paysan, par un seul passage, fournit au sol l'ensemble des éléments dont il a besoin. Le paysan n'a plus besoin, dans un premier passage, d'apporter les éléments N, P, K, dans un deuxième passage, d'arroser et dans un troisième passage, d'apporter la matière organique.In addition, the porous material of the fertilizer according to the invention is able to take up water, which prevents the hydric stress of the plants, while the sludge provides the organic matter necessary for soil maintenance so that the peasant, by a single passage, provides the ground with all the elements he needs. The peasant no longer needs, in a first pass, to bring the elements N, P, K, in a second passage, to water and in a third passage, to bring the organic matter.
On met suivant l'invention de 450 à 500 kilos à l'hectare d'un engrais perfectionné suivant l'invention comprenant la matière poreuse suivant l'invention et les granulés, au lieu d'un passage de 350 kilos d'engrais et d'un deuxième passage de 500 kilos de matière organique à 1 ' hectare . En général, on mélange la matière poreuse formant l'engrais suivant l'invention à raison de 1 volume pour 0,7 à 1,5 volume de grains de compost. According to the invention, from 450 to 500 kilograms per hectare of an improved fertilizer according to the invention comprising the porous material according to the invention and the granules, instead of a passage of 350 kilos of fertilizer and a second pass of 500 kilos of organic matter per hectare. In general, the porous material forming the fertilizer according to the invention is mixed at a rate of 1 volume per 0.7 to 1.5 volumes of compost grains.

Claims

REVENDICATIONS
1. Engrais comprenant une matière poreuse à cellules fermées en grains ayant un diamètre compris entre 2 et 4 mm et, de préférence, compris entre 2 et 3 mm, et contenant de 10 à 60 grammes d'azote par litre, caractérisé en ce qu'il satisfait à l'essai suivant : lorsque l'on immerge 2 litres de l'engrais dans 4 litres d'eau pendant 15 minutes, puis on retire l'engrais de l'eau en laissant s ' égoutter l'eau y adhérent pendant 20 minutes au-dessus de l'eau utilisée initialement, la teneur finale en azote ammoniacal de l'eau est inférieure à 3 mg/1.Fertilizer comprising a closed-cell porous material having a diameter of between 2 and 4 mm, and preferably between 2 and 3 mm, and containing from 10 to 60 grams of nitrogen per liter, characterized in that It satisfies the following test: when 2 liters of the fertilizer are immersed in 4 liters of water for 15 minutes, then the fertilizer is removed from the water by allowing the adhering water to drain. for 20 minutes above the water initially used, the final ammoniacal nitrogen content of the water is less than 3 mg / l.
2. Engrais suivant la revendication 1 qui contient du phosphore, caractérisé en ce qu'il satisfait à l'essai suivant : lorsque l'on immerge 2 litres de l'engrais dans 4 litres d'eau pendant 15 minutes, puis on retire l'engrais de l'eau en laissant s 'égoutter l'eau y adhérent pendant 20 minutes au-dessus de l'eau utilisée initialement, la teneur finale en phosphore de l'eau est inférieure à 3 mg/1.2. Fertilizer according to claim 1 which contains phosphorus, characterized in that it satisfies the following test: when immersing 2 liters of the fertilizer in 4 liters of water for 15 minutes, then removing the water fertilizer by allowing the water to adhere to it for 20 minutes above the water initially used, the final phosphorus content of the water is less than 3 mg / 1.
3. Engrais suivant la revendication 1 ou 2 comprenant du potassium, caractérisé en ce qu'il satisfait à l'essai suivant : lorsque l'on immerge 2 litres de l'engrais dans 4 litres d'eau pendant 15 minutes, puis on retire l'engrais de l'eau en laissant s'égoutter l'eau y adhérent pendant 20 minutes au-dessus de l'eau utilisée initialement, la teneur finale en potassium de l'eau est inférieure à 3 mg/1.3. Fertilizer according to claim 1 or 2 comprising potassium, characterized in that it satisfies the following test: when immersing 2 liters of the fertilizer in 4 liters of water for 15 minutes, then removed the fertilizer of the water by allowing water to adhere to it adheres for 20 minutes above the water used initially, the final potassium content of the water is less than 3 mg / 1.
4. Engrais suivant l'une des revendications précédentes, caractérisé en ce que la matière poreuse est mélangée à du compost comprenant des boues de station d'épuration ou à des défécations de latrines.4. Fertilizer according to one of the preceding claims, characterized in that the porous material is mixed with compost comprising sludge treatment plant or latrine defecation.
5. Engrais suivant l'une des revendications précédentes, caractérisé en ce que la matière poreuse à cellules fermées est de la pierre ponce ou du charbon actif.5. Fertilizer according to one of the preceding claims, characterized in that the closed cell porous material is pumice or activated carbon.
6. Engrais suivant la revendication 5, caractérisé en ce que la pièce ponce est à structure polyédrique ou pseudopolyédrique .6. Fertilizer according to claim 5, characterized in that the pumice piece has a polyhedral or pseudopolyhedral structure.
7. Procédé de production d'un engrais suivant l'une des revendications précédentes, caractérisé en ce que : on prend un échantillon de 200 grammes de matière poreuse en grains d'un diamètre compris entre 2 et 4 mm et, de préférence, inférieur à 3 mm, que l'on immerge dans 1 litre d'une solution aqueuse d'ammoniac à 13 % en volume pendant 5 minutes, on retire la matière poreuse de la solution, on l'égoutte sur un tamis pendant 10 minutes, on immerge la matière poreuse égouttée dans 300 cm3 d'eau pendant 5 minutes, on détermine la teneur en azote ammoniacal de l'eau et, si la teneur en azote est supérieure à 3,2 mg/1, on rejette la matière poreuse, tandis que, si elle est inférieure à 3,2 mg/1, on immerge de 1,5 volume à 2,3 volume de matière poreuse dans un volume d'une solution aqueuse ou acide ayant une teneur en azote de 5 à 50 grammes par 100 grammes d'eau et on laisse la matière poreuse dans la solution jusqu'à absorption totale de celle-ci par la matière poreuse, notamment pendant 2 à 8 heures, pour obtenir l'engrais.7. Process for the production of a fertilizer according to one of the preceding claims, characterized in that: a sample of 200 grams of porous granular material having a diameter of between 2 and 4 mm and, preferably, less than at 3 mm, which is immersed in 1 liter of an aqueous solution of ammonia at 13% by volume for 5 minutes, the porous material is removed from the solution, it is drained on a sieve for 10 minutes, immersing the porous material drained in 300 cm 3 of water for 5 minutes, determining the ammonia nitrogen content of the water and, if the nitrogen content is greater than 3.2 mg / l, rejecting the porous material, while, if it is less than 3.2 mg / l, 1.5 volumes to 2.3 volumes of porous material are immersed in a volume of an aqueous or acidic solution having a content of in nitrogen of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until it is completely absorbed by the porous material, especially for 2 to 8 hours, to obtain the fertilizer.
8. Procédé suivant la revendication précédente, caractérisé en ce que : on prend un échantillon de 200 grammes de matière poreuse en grains d'un diamètre compris entre 2 et 4 mm et, de préférence, inférieur à 3 mm, que l'on immerge dans 1 litre d'une solution aqueuse d'ammoniac à 13 % en volume pendant 5 minutes, on retire la matière poreuse, on l'égoutte sur un tamis pendant 10 minutes, on immerge la matière poreuse égouttée dans 300 cm3 d'eau pendant 5 minutes, on détermine la teneur en azote ammoniacal de l'eau et, si la teneur en azote est supérieure à 3,2 mg/1, on rejette la matière poreuse, tandis que, si elle est inférieure à 3,2 mg/1, on immerge de 1,5 volume à 2,3 volume de matière poreuse dans un volume d'une solution aqueuse ou acide ayant une teneur en phosphore de 5 à 50 grammes par 100 grammes d'eau et on laisse la matière poreuse dans la solution jusqu'à absorption totale de celle-ci par la matière poreuse, notamment pendant 2 à 8 heures, pour obtenir l'engrais.8. Process according to the preceding claim, characterized in that: a sample of 200 grams of porous granular material with a diameter of between 2 and 4 mm and, preferably, less than 3 mm, is immersed. in 1 liter of a 13% aqueous solution of ammonia in volume for 5 minutes, the porous material is removed, drained on a sieve for 10 minutes, the drained porous material is immersed in 300 cm 3 of water for 5 minutes, the ammonia nitrogen content of the water is determined and, if the nitrogen content is greater than 3.2 mg / l, the porous material is discarded, whereas, if it is less than 3.2 mg 1 is immersed from 1.5 volume to 2.3 volume of porous material in a volume of an aqueous or acidic solution having a phosphorus content of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until it is completely absorbed by the porous material, in particular for 2 to 8 hours, to get the fertilizer.
9. Procédé suivant la revendication précédente, caractérisé en ce que : on prend un échantillon de 200 grammes de matière poreuse en grains d'un diamètre compris entre 2 et 4 mm et, de préférence, inférieur à 3 mm, que l'on immerge dans 1 litre d'une solution aqueuse d'ammoniac à 13 % en volume pendant 5 minutes, on retire la matière poreuse, on l'égoutte sur un tamis pendant 10 minutes, on immerge la matière poreuse égouttée dans 300 cm3 d'eau pendant 5 minutes, on détermine la teneur en azote ammoniacal de l'eau et, si la teneur en azote est supérieure à 3,2 mg/1, on rejette la matière poreuse, tandis que, si elle est inférieure à 3,2 mg/1, on immerge de 1,5 volume à 2,3 volume de matière poreuse dans un volume d'une solution aqueuse ou acide ayant une teneur en potassium de 5 à 50 grammes par 100 grammes d'eau et on laisse la matière poreuse dans la solution jusqu'à absorption totale de celle-ci par la matière poreuse, notamment pendant 2 à 8 heures, pour obtenir l'engrais. 9. Process according to the preceding claim, characterized in that: a sample of 200 grams of porous granular material having a diameter of between 2 and 4 mm and, preferably, less than 3 mm, which is immersed is taken. in 1 liter of a 13% aqueous solution of ammonia in volume for 5 minutes, the porous material is removed, drained on a sieve for 10 minutes, the drained porous material is immersed in 300 cm 3 of water while 5 minutes, the ammonia nitrogen content of the water is determined and, if the nitrogen content is greater than 3.2 mg / l, the porous material is rejected, whereas, if it is less than 3.2 mg / l, 1, 1.5 volumes to 2.3 volumes of porous material are immersed in a volume of an aqueous or acidic solution having a potassium content of 5 to 50 grams per 100 grams of water and the porous material is left in the solution until total absorption thereof by the porous material, especially for 2 to 8 hours, to obtain the fertilizer.
PCT/FR2009/000325 2008-04-02 2009-03-25 Fertilizer based on a porous material WO2009125093A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09730195A EP2271599A2 (en) 2008-04-02 2009-03-25 Fertilizer based on a porous material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0801829A FR2929610B1 (en) 2008-04-02 2008-04-02 FERTILIZER BASED ON POROUS MATERIAL
FR0801829 2008-04-02

Publications (2)

Publication Number Publication Date
WO2009125093A2 true WO2009125093A2 (en) 2009-10-15
WO2009125093A3 WO2009125093A3 (en) 2009-12-30

Family

ID=40019345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2009/000325 WO2009125093A2 (en) 2008-04-02 2009-03-25 Fertilizer based on a porous material

Country Status (3)

Country Link
EP (1) EP2271599A2 (en)
FR (1) FR2929610B1 (en)
WO (1) WO2009125093A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2008236C2 (en) * 2012-02-06 2013-08-08 Holding Company Belgie Nv Water and nutrient management in crops production.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB426380A (en) * 1933-10-06 1935-04-02 John Radcliffe Improvements in fertilisers
GB795805A (en) * 1954-07-29 1958-05-28 Eiler Theodor Lehn Schioler Improvements in or relating to fertilisers
US3441400A (en) * 1965-06-28 1969-04-29 Wyandotte Chemicals Corp Porous mineral carrier impregnated with a nitrogen fertilizer
WO2003048076A1 (en) * 2001-12-04 2003-06-12 Bio-Media Co., Ltd A method for producing a solid fertilizer for plant growth, the solid fertilizer chip and a pot for plant growth containing the solid fertilizer chip
FR2862058A1 (en) * 2003-11-06 2005-05-13 Jean Pierre Camp Production of free flowing granulated materials from the sludge from the biological treatment of waste water for agricultural or landscape soil conditioning applications
WO2007126388A1 (en) * 2006-04-27 2007-11-08 Wong Che Meng, Joseph Fertilizer compositions for plantation crops

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793359A (en) * 1971-12-27 1973-06-27 Hoechst Ag PROCESS FOR PREPARING FERTILIZERS CONTAINING ISOBUTYLIDENE-DIUREE
SU1574583A1 (en) * 1987-12-26 1990-06-30 Производственное объединение "Грузгорнохимпром" Method of obtaining phosporus zeolite-base fertilizer
JPH08289680A (en) * 1995-04-20 1996-11-05 Shiyouriyoku Ringyo Kenkyusho:Kk Water culture of nursery tree and fertilizer for water culturing nursery tree
US5695542A (en) * 1995-11-14 1997-12-09 Chang; Hsin-Jen Method of preparing a slow release fertilizer
JPH10194884A (en) * 1997-01-06 1998-07-28 Hitachi Zosen Corp Slow release organic fertilizer
GB2433934A (en) * 2005-11-01 2007-07-11 David Lawrence Mckenzie The use of treated pumice as a fertiliser.
CN101104568A (en) * 2006-07-13 2008-01-16 邢素琴 Zeolite organic-inorganic composite fertilizer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB426380A (en) * 1933-10-06 1935-04-02 John Radcliffe Improvements in fertilisers
GB795805A (en) * 1954-07-29 1958-05-28 Eiler Theodor Lehn Schioler Improvements in or relating to fertilisers
US3441400A (en) * 1965-06-28 1969-04-29 Wyandotte Chemicals Corp Porous mineral carrier impregnated with a nitrogen fertilizer
WO2003048076A1 (en) * 2001-12-04 2003-06-12 Bio-Media Co., Ltd A method for producing a solid fertilizer for plant growth, the solid fertilizer chip and a pot for plant growth containing the solid fertilizer chip
FR2862058A1 (en) * 2003-11-06 2005-05-13 Jean Pierre Camp Production of free flowing granulated materials from the sludge from the biological treatment of waste water for agricultural or landscape soil conditioning applications
WO2007126388A1 (en) * 2006-04-27 2007-11-08 Wong Che Meng, Joseph Fertilizer compositions for plantation crops

Also Published As

Publication number Publication date
FR2929610A1 (en) 2009-10-09
EP2271599A2 (en) 2011-01-12
WO2009125093A3 (en) 2009-12-30
FR2929610B1 (en) 2011-09-23

Similar Documents

Publication Publication Date Title
Lu et al. Contribution of plant photosynthates to dissolved organic carbon in a flooded rice soil
Kato et al. Dissolution of slag fertilizers in a paddy soil and Si uptake by rice plant
JP2018069193A (en) Method for producing mineral water
Cajuste et al. Extraction of heavy metals from contaminated soils: I. Sequential extraction in surface soils and their relationships to DTPA extractable metals and metal plant uptake
WO2015029326A1 (en) Biological purification agent for water to be treated, production method for same, biological purification method for water to be treated, and biological purification system for water to be treated
Kızılkaya et al. Vermicomposting of anaerobically digested sewage sludge with hazelnut husk and cow manure by earthworm Eisenia foetida
WO2009125093A2 (en) Fertilizer based on a porous material
Rahman et al. Effect of tillage practices and rice straw management on soil environment and carbon dioxide emission.
CN108866041B (en) Extraction method of guava phyllospheric microorganism genome DNA
Groga et al. Étude comparative de la qualité de la symbiose (Anabaena azollae, Azolla caroliniana), du compost et du NPK sur la croissance végétative et le rendement de la tomate (Lycopersicon esculentum mill. Solanacée) à Daloa (Côte d’Ivoire)
EP3628138A1 (en) Steelmaking slag-coated seed and method for producing same
Suyani et al. COPPER, IRON AND ZINC CONTENTS IN WATER, PAKCOY (Brassica rapa L.) AND TILAPIA (Oreochromis niloticus) IN THE PRESENCE OF AQUAPONICS.
FR2937969A1 (en) PERFECTION METHOD FOR TREATING ANY LIQUID CONTAINING SUSPENSION OF ORGANIC MATTER
JP2009171932A (en) Solidifying material for aquatic organism, method for producing the same, and method for producing amino acid-containing solidifying material
EP2909154B1 (en) Digestate treatment method, fertilizer resulting from said method, and corresponding treatment unit
M’Sadak et al. Valorisation agronomique hors sol de la biométhanisation industrielle avicole en Tunisie
CN108745298A (en) A kind of Fe/Mn is modified the preparation method and applications of moso bamboo something lost state composite material
FR2903096A1 (en) PROCESS FOR TREATING A SLURRY SUCH AS A PIG SLURRY
EP2128115A1 (en) Anthropogenic soils called terra preta.
García et al. Nitrogen recovery from liquid manure using gas-permeable membranes: Effect of wastewater strength and pH control
Garg et al. Effect of inorganic phosphorus on algae excised from inland waters
CN107459384A (en) The biomass combined matrix of old ardealite and its manufacture method and application
Lim et al. Effects of Devarda's Alloy Addition on Determination of Total Nitrogen and Inorganic Nitrogen in Liquid Livestock Manure
Lama et al. Water hyacinth used vermicompost nutrient analysis: a case study of Phewa Lake, Pokhara.
FR3123648A1 (en) DISAGREGABLE GRANULATED FERTILIZER BASED ON CALCIUM AND/OR MAGNESIUM AND POTASSIUM AND METHOD FOR OBTAINING THE SAME

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09730195

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2009730195

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE