EP0925266A1 - Oyster shell based products and methods for improving soils - Google Patents

Oyster shell based products and methods for improving soils

Info

Publication number
EP0925266A1
EP0925266A1 EP97926043A EP97926043A EP0925266A1 EP 0925266 A1 EP0925266 A1 EP 0925266A1 EP 97926043 A EP97926043 A EP 97926043A EP 97926043 A EP97926043 A EP 97926043A EP 0925266 A1 EP0925266 A1 EP 0925266A1
Authority
EP
European Patent Office
Prior art keywords
product
oyster shells
shells
soil amendment
calcium
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
EP97926043A
Other languages
German (de)
French (fr)
Inventor
Jean-Paul Deveney
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0925266A1 publication Critical patent/EP0925266A1/en
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F1/00—Fertilisers made from animal corpses, or parts thereof
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D3/00—Calcareous fertilisers
    • C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/145—Feedstock the feedstock being materials of biological origin

Definitions

  • the present invention relates to the amendment of soils by calcium inputs.
  • Various products are known in the state of the art for soil improvement.
  • French patent FR2699916 describes an organic agent for soil amendment based on organic matter, said organic agent containing up to 10% by weight of nitrogen, of phosphorus calculated in the form of P2 05 and of potassium calculates in the form of K2 O, said organic agent having a dry matter content of more than 50%, the organic matter content, relative to the dry matter, being from 15 to 35%.
  • Another French patent filed under the number FR2620206 relates to a process for drying limestone or magnesian rock using a chemical reaction initiated by addition and then mixing with a similar product, quicklime.
  • the mixing takes place at room temperature and under well-defined conditions.
  • the reaction time includes heating of the product with release of vapor 4 as well as the absorption of the water contained in the wet rock by quicklime which is transformed into slaked lime.
  • the final mixture product improved in terms of its use is particularly intended for application to acid agricultural soils.
  • the object of the invention is to provide a high-performance amendment product obtained by natural base materials, easy to handle and little harmful. It aims in particular to reduce the rate of pollution in the event of incorrect dosage of products.
  • the invention relates more particularly to a product for the amendment of soils by calcium inputs, characterized in that it consists of oyster shells having undergone a grinding treatment and optionally a drying treatment, with l exclusion of any treatment likely to modify the chemical composition of oyster shells.
  • the product consists of fragments of oyster shells having a particle size between 1 and 10 millimeters.
  • the invention also relates to a soil amendment process characterized in that finely divided oyster shells are added.
  • the doses of finely divided oyster shells are between 20 kg per 100 m2 for an initial pH below 6, and 5 kg per 100 m2 for an initial pH between 7, 5 and 8.
  • the addition of finely looted shells is carried out at least one month before the application of fertilizer or manure.
  • the product according to an exemplary embodiment has, according to the origin of the shells, the following composition:
  • This carbonate represents a variety of calcium which is particularly assimilable, due to its animal origin.
  • Trace elements are all represented, at reasonable rates, compared to those usually present in fertilizers and soil improvers. These substances are also easily absorbed by the soil.
  • the product is particularly indicated for its calcium intake, in particular:
  • the recommended dose is 20 kg per 100 m 2
  • the recommended dose is 15 kg per 100 m 2
  • the recommended dose is 10 kg per 100 m 2
  • the recommended dose is 7.5 kg per 100 m 2
  • the recommended dose is 5 kg per 100 m 2

Abstract

The invention features a product for improving soils by calcic deposits, consisting of oyster shells having been treated by crushing and optionally by dessication, excluding all treatment likely to modify the oyster shell chemical composition.

Description

PRODUIT ET PROCEDE POUR L'AMENDEMENT DE SOLS A BASE DE COQUILLES D'HUITRES.  PRODUCT AND METHOD FOR THE AMENDMENT OF SOILS BASED ON OYSTER SHELLS.
La présente invention concerne l'amendement des sols par apports calciques. On connaît dans l'état de la technique différents produits pour l'amendement des sols. A titre d'exemple, le brevet français FR2699916 décrit un agent organique pour l'amendement du sol à base de matière organique, ledit agent organique contenant jusqu'à 10% en poids d'azote, de phosphore calculé sous forme de P2 05 et de potassium calcule sous forme de K2 O, ledit agent organique présentant une teneur en matière sèche de plus de 50%, la teneur en matière organique, par rapport à la matière sèche, étant de 15 à 35%. The present invention relates to the amendment of soils by calcium inputs. Various products are known in the state of the art for soil improvement. By way of example, French patent FR2699916 describes an organic agent for soil amendment based on organic matter, said organic agent containing up to 10% by weight of nitrogen, of phosphorus calculated in the form of P2 05 and of potassium calculates in the form of K2 O, said organic agent having a dry matter content of more than 50%, the organic matter content, relative to the dry matter, being from 15 to 35%.
Un autre brevet français déposé sous le nº FR2620206 concerne un procédé de séchage de roche calcaire ou magnésienne grâce à une réaction chimique déclenchée par adjonction puis mélange avec un produit similaire, la chaux vive. Le mélange s'effectue à température ambiante et dans des conditions bien déterminées. Le temps de réaction comprend un échauffement du produit avec dégagement de vapeur 4 ainsi que l'absorption de l'eau contenue dans la roche humide par la chaux vive qui se transforme en chaux éteinte. Le produit de mélange final amélioré quant à son utilisation est particulièrement destiné à une application aux sols agricoles acides.  Another French patent filed under the number FR2620206 relates to a process for drying limestone or magnesian rock using a chemical reaction initiated by addition and then mixing with a similar product, quicklime. The mixing takes place at room temperature and under well-defined conditions. The reaction time includes heating of the product with release of vapor 4 as well as the absorption of the water contained in the wet rock by quicklime which is transformed into slaked lime. The final mixture product improved in terms of its use is particularly intended for application to acid agricultural soils.
Ces différents produits mettant en oeuvre des matériaux corrosifs dont la manipulation est délicate.  These different products using corrosive materials whose handling is delicate.
On a également proposé dans le brevet français FR2565466 un produit de nutrition, notamment pour animaux et sols constitué par des granulats de calcaires marins organiques, notamment des coquillages ou des algues lithothamnes, dont une partie se présente simultanément sous la forme de phosphates mono-, bi et tricalciques résultant de l'action de l'acide phosphorique sur lesdits calcaires marins. Ledit produit est mis en oeuvre dans une installation comportant un réacteur cylindrique horizontal, un rotor comportant des moyens de brassage des granulats, des moyens de chauffage, des moyens de fourniture de granulats, des moyens de fourniture d'au moins l'acide phosphorique, des moyens pour la décharge des granulats traites, et des moyens d'aspiration des éléments gazeux résultant de la réaction. Ce produit met également en oeuvre un traitement à base d'acides qui se révèle très corrosif. There has also been proposed in French patent FR2565466 a nutrition product, in particular for animals and soils constituted by aggregates of organic marine limestones, in particular shells or lithothamene algae, some of which is present. simultaneously in the form of mono-, bi and tricalcium phosphates resulting from the action of phosphoric acid on said marine limestones. Said product is used in an installation comprising a horizontal cylindrical reactor, a rotor comprising means for mixing the aggregates, heating means, means for supplying aggregates, means for supplying at least phosphoric acid, means for discharging the treated aggregates, and means for sucking up the gaseous elements resulting from the reaction. This product also implements an acid-based treatment which proves to be very corrosive.
L'objet de l'invention est de proposer un produit d'amendement performant obtenu par des matériaux de base naturels, faciles à manipuler et peu nuisibles. Elle vise en particulier à réduire le taux de pollution en cas de mauvais dosage des produits.  The object of the invention is to provide a high-performance amendment product obtained by natural base materials, easy to handle and little harmful. It aims in particular to reduce the rate of pollution in the event of incorrect dosage of products.
A cet effet, l'invention concerne plus particulièrement un produit pour l'amendement des sols par apports calciques, caractérisé en ce qu'il est constitué par coquilles d'huîtres ayant subi un traitement de broyage et optionnellement un traitement de dessiccation, à l'exclusion de tout traitement de nature à modifier la composition chimique des coquilles d'huîtres.  To this end, the invention relates more particularly to a product for the amendment of soils by calcium inputs, characterized in that it consists of oyster shells having undergone a grinding treatment and optionally a drying treatment, with l exclusion of any treatment likely to modify the chemical composition of oyster shells.
De préférence, le produit est constitué par des fragments de coquilles d'huîtres présentant une granulométrie comprise entre 1 et 10 millimètres.  Preferably, the product consists of fragments of oyster shells having a particle size between 1 and 10 millimeters.
L'invention concerne également un procédé d'amendement des sols caractérisé en ce que l'on ajoute des coquilles d'huîtres finement divisées.  The invention also relates to a soil amendment process characterized in that finely divided oyster shells are added.
Avantageusement, les doses de coquilles d'huîtres finement divisées sont comprises entre 20 kg par 100 m2 pour un pH initial inférieur à 6, et 5 kg par 100 m2 pour un pH initial compris entre 7, 5 et 8 . Selon un mode de réalisation préféré, l'adjonction de coquilles finement pillées est effectuée au moins un mois avant l'application d'engrais ou de fumure. Advantageously, the doses of finely divided oyster shells are between 20 kg per 100 m2 for an initial pH below 6, and 5 kg per 100 m2 for an initial pH between 7, 5 and 8. According to a preferred embodiment, the addition of finely looted shells is carried out at least one month before the application of fertilizer or manure.
L'invention sera mieux comprise à la lecture de la description qui suit. Le produit selon un exemple de réalisation présente, suivant l'origine des coquilles, la composition suivante :  The invention will be better understood on reading the description which follows. The product according to an exemplary embodiment has, according to the origin of the shells, the following composition:
On constate que le calcium est, sous sa forme CaCo3 {calcaire) très largement dominant. En effet, si l'on rapporte les résultats bruts obtenus en Ca2+ à la forme carbonate, on obtient : It is found that calcium is, in its CaCo 3 form (limestone), very largely dominant. Indeed, if we relate the raw results obtained in Ca 2+ to the carbonate form, we obtain:
ARC : 81,71 % MS  ARC: 81.71% DM
BRE : 86,86 ù MS  BRE: 86.86 ù MS
MAR : 79,48 % MS  TUE: 79.48% DM
Ce carbonate représente une variété de calciums particulièrement assimilable, de par son origine animale.  This carbonate represents a variety of calcium which is particularly assimilable, due to its animal origin.
Les oligo-éléments sont tous représentés, à des taux raisonnables, en regard de ceux habituellement présents dans les engrais et les amendements. Ces substances sont en outre facilement absorbées par les sols.  Trace elements are all represented, at reasonable rates, compared to those usually present in fertilizers and soil improvers. These substances are also easily absorbed by the soil.
Les teneurs en métaux lourds (Pb, Cd, Hg) ou indésirables (Cr, Ni) sont très modestes. Seul le plomb atteint des taux légèrement plus élevés, quoique 5 à 10 fois inférieur à celui relevé dans les composts commerciaux.  The contents of heavy metals (Pb, Cd, Hg) or undesirable (Cr, Ni) are very modest. Only lead reaches slightly higher rates, although 5 to 10 times lower than that found in commercial composts.
Afin de réduire l'instabilité en cours de stockage et l'apparition d'odeurs nauséabondes, il est préférable de procéder à une disseccation thermique préalable des coquilles.  In order to reduce instability during storage and the appearance of foul smells, it is preferable to carry out a preliminary thermal dissection of the shells.
Le produit est particulièrement indiqué pour son apport calcique, en particulier :  The product is particularly indicated for its calcium intake, in particular:
sur des terres acides, à forte dose  on acid soils, in high doses
sur des terrains siliceux ou silico-argileux déficitaires en calcium  on siliceous or silico-clay soils lacking in calcium
en préalable à une fumure organique, dans la mesure où le calcium favorise la décomposition des éléments nutritifs  prior to organic fertilization, since calcium promotes the breakdown of nutrients
plus généralement, avant un apport d'engrais, car le calcium est indispensable aux échanges de cations permettant la fixation des éléments nutritifs. L'utilisation du produit selon l'invention est compatible avec le marché du jardin privé, dans la mesure où on recherche des engrais à grande rapidité d'action. more generally, before a fertilizer supply, because calcium is essential for the exchange of cations allowing the fixing of nutrients. The use of the product according to the invention is compatible with the private garden market, insofar as fertilizers with a high speed of action are sought.
Pour déterminer les doses à employer, il est recommandé de procéder comme suit :  To determine the doses to be used, it is recommended to proceed as follows:
On prélève un peu de terre à l'aide d'une spatule, en effectuant le prélèvement jusqu'à 10 centimètres de profondeur. On homogénéise le prélèvement en remuant la terre prélevée. On remplit de terre un gobelet témoin contenant 2/5 du volume d'eau. On complète avec de l'eau pure et on agite de façon à mettre la terre en suspension. On renouvelle l'opération toutes les 5 minutes. Au bout d'une demi -heure, on immerge une bandelette de lecture du pH dans l'eau surnageante et on lit le pH.  We take a little soil using a spatula, taking the sample up to 10 centimeters deep. The sample is homogenized by stirring the soil sampled. A control cup containing 2/5 of the volume of water is filled with soil. It is made up with pure water and stirred so as to suspend the soil. The operation is repeated every 5 minutes. After half an hour, immerse a pH reading strip in the supernatant water and read the pH.
Pour un pH inférieur à 6, la dose conseillée est de 20 kg pour 100 m2 For a pH below 6, the recommended dose is 20 kg per 100 m 2
Pour un pH compris entre 6 et 6,5, la dose conseillée est de 15 kg pour 100 m2 For a pH between 6 and 6.5, the recommended dose is 15 kg per 100 m 2
Pour un pH compris entre 6,5 et 7, la dose conseillée est de 10 kg pour 100 m2 For a pH between 6.5 and 7, the recommended dose is 10 kg per 100 m 2
Pour un pH compris entre 7 et 7,5, la dose conseillée est de 7,5 kg pour 100 m2 For a pH between 7 and 7.5, the recommended dose is 7.5 kg per 100 m 2
Pour un pH compris entre 7,5 et 8, la dose conseillée est de 5 kg pour 100 m2 For a pH between 7.5 and 8, the recommended dose is 5 kg per 100 m 2

Claims

REVENDICATIONS
1 - Produit pour l'amendement des sols par apports calciques, caractérisé en ce qu'ai est constitué par coquilles d'huîtres ayant subi un traitement de broyage et optionnellement un traitement de dessiccation, à l'exclusion de tout traitement de nature à modifier la composition chimique des coquilles d'huîtres. 2 - Produit pour l'amendement des sols par apports calciques selon la revendication 1 caractérisé en ce qu'il est constitué par des fragments de coquilles d'huîtres présentant une granulométrie comprise entre 1 et 10 millimètres.  1 - Product for soil amendment by calcium inputs, characterized in that ai is constituted by oyster shells having undergone a grinding treatment and optionally a drying treatment, to the exclusion of any treatment likely to modify the chemical composition of oyster shells. 2 - Product for soil amendment by calcium inputs according to claim 1 characterized in that it consists of fragments of oyster shells having a particle size between 1 and 10 millimeters.
3 - Procédé d'amendement des sols caractérisé en ce que l'on ajoute des coquilles d'huîtres finement divisées. 4 - Procédé d'amendement des sols selon la revendication 3 caractérisé en ce que les doses de coquilles d'huîtres finement divisées sont comprises entre 20 kg par 100 m2 pour un pH initial inférieur à 6, et 5 kg par 100 m2 pour un pH initial compris entre 7,5 et 8 . 3 - Soil amendment process characterized in that finely divided oyster shells are added. 4 - A method of soil amendment according to claim 3 characterized in that the doses of finely divided oyster shells are between 20 kg per 100 m2 for an initial pH below 6, and 5 kg per 100 m2 for a pH initial between 7.5 and 8.
5 - Procédé d'amendement des sols selon la revendication 3 ou 4 caractérisé en ce que l'adjonction de coquilles finement pilléEs est effectuéE au moins un mois avant l'application d'engrais ou de fumure. 5 - A method of soil amendment according to claim 3 or 4 characterized in that the addition of finely looted shells is carried out at least one month before the application of fertilizer or manure.
EP97926043A 1996-06-04 1997-05-27 Oyster shell based products and methods for improving soils Ceased EP0925266A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9606891 1996-06-04
FR9606891A FR2749298B1 (en) 1996-06-04 1996-06-04 PRODUCT AND METHOD FOR THE AMENDMENT OF SOILS BASED ON OYSTER SHELLS
PCT/FR1997/000926 WO1997046498A1 (en) 1996-06-04 1997-05-27 Oyster shell based products and methods for improving soils

Publications (1)

Publication Number Publication Date
EP0925266A1 true EP0925266A1 (en) 1999-06-30

Family

ID=9492714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97926043A Ceased EP0925266A1 (en) 1996-06-04 1997-05-27 Oyster shell based products and methods for improving soils

Country Status (3)

Country Link
EP (1) EP0925266A1 (en)
FR (1) FR2749298B1 (en)
WO (1) WO1997046498A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113174266A (en) * 2021-04-20 2021-07-27 集美大学 Oyster shell soil conditioner and low-carbon green production method and application thereof
CN114149279A (en) * 2021-11-16 2022-03-08 泉州南京大学环保产业研究院 Method for comprehensively treating oyster shells based on anaerobic digestion

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015973A (en) * 1974-02-04 1977-04-05 American Pelletizing Corporation Limestone-expanding clay granules and method of making them
DE2408410A1 (en) * 1973-02-23 1974-08-29 Calcium Products Corp LIMESTONE CORES AND THE PROCESS FOR THEIR PRODUCTION
JPS57200280A (en) * 1981-06-01 1982-12-08 Harumi Hamamoto Fertilizer utilizing shells comprising mussels mainly
JPS63215582A (en) * 1987-03-03 1988-09-08 鈴木　貞夫 Manufacture of fine natural lime-base fertilizer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9746498A1 *

Also Published As

Publication number Publication date
WO1997046498A1 (en) 1997-12-11
FR2749298B1 (en) 1998-07-10
FR2749298A1 (en) 1997-12-05

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