EP4598892A1 - Procédé de réduction d'émissions de gaz nocifs à partir d'engrais organiques - Google Patents

Procédé de réduction d'émissions de gaz nocifs à partir d'engrais organiques

Info

Publication number
EP4598892A1
EP4598892A1 EP23786023.4A EP23786023A EP4598892A1 EP 4598892 A1 EP4598892 A1 EP 4598892A1 EP 23786023 A EP23786023 A EP 23786023A EP 4598892 A1 EP4598892 A1 EP 4598892A1
Authority
EP
European Patent Office
Prior art keywords
manure
emissions
acid
weight
cyanamide
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.)
Pending
Application number
EP23786023.4A
Other languages
German (de)
English (en)
Inventor
Dominik REITER
Stephan Winkler
Johannes BECHER
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.)
Alzchem Trostberg GmbH
Original Assignee
Alzchem Trostberg GmbH
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 Alzchem Trostberg GmbH filed Critical Alzchem Trostberg GmbH
Publication of EP4598892A1 publication Critical patent/EP4598892A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C3/00—Treating manure; Manuring
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
    • C05F5/006—Waste from chemical processing of material, e.g. diestillation, roasting, cooking
    • C05F5/008—Waste from biochemical processing of material, e.g. fermentation, breweries
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • the present invention relates to a method for reducing the emission of harmful gases, such as ammonia, carbon dioxide, nitrous oxide, methane and hydrogen sulphide from farm manure during its storage. Furthermore, the present invention relates to the use of a calcium cyanamide (CaCISh)-containing composition in acidified farm manure, by means of which the emission of these gases during its storage is suppressed or reduced.
  • harmful gases such as ammonia, carbon dioxide, nitrous oxide, methane and hydrogen sulphide
  • the present invention is therefore based on the object of providing a process for reducing gas emissions from farm manure during storage, which permanently reduces the release of a large number of gases, is relatively easy to carry out and also does not negatively affect the planned use of farm manure as fertilizer in agriculture.
  • the present invention is intended to reduce the effort required to control the pH value when storing acidified farm manure.
  • the subject of the present invention is a method for reducing the emission of harmful gases from farm manure during storage, which comprises the following method steps: a) providing a farm manure, and b) acidifying the farm manure until a pH value in the range of pH 4.5 to 6.8 is set, and c) adding 0.01% to 1.0% by weight, based on the total weight of the farm manure, of a cyanamide salt composition to the farm manure.
  • the process according to the invention can be used to reduce the emission of ammonia and nitrous oxide particularly effectively, in addition to the emission of methane and carbon dioxide.
  • the formation and release of toxic hydrogen sulphide is also prevented very effectively, especially in comparison to pure manure acidification with sulphuric acid. This is particularly relevant for the protection of people and animals, as accidents caused by H2S still occur, which in rare cases can be fatal.
  • farm manure includes fertilizers according to Section 2 Paragraphs (1), (2), (3), (4) and (5) of the Fertilizer Act (DüngG, of 9 January 2009 (BGBl. I p. 54, 136), last amended by Article 1 of the Act of 5 May 2017 (BGBl. I p. 1068)).
  • farm manure according to the present invention is fertilizers that a) are used as animal excreta aa) in the keeping of animals for the production of food or bb) in the other keeping of animals in agriculture or b) as plant substances in the context of plant production or in the
  • Solid manure farmyard manure made from animal excrement, whether or not mixed with bedding, in particular straw, sawdust, peat or other plant material added as part of animal husbandry, or mixed with feed residues, the dry matter content of which exceeds 15% by weight;
  • Slurry Manure from all animal excrement, including small amounts of bedding or feed residues or the addition of water, with a dry matter content of not more than 15% by weight. Slurry usually has a dry matter content of at least 1% by weight. Slurry preferably contains a solids content in the range of 3 to 12% by weight;
  • Liquid manure manure from animal excrement, which is a mixture of manure and washed-out fine particles of the droppings or bedding, as well as water; liquid manure may contain small amounts of feed residues, cleaning water and rainwater; Biogas digestate: Farmyard manure made from residues resulting from the fermentation of organic materials of both plant and animal origin from biogas plants.
  • the process according to the invention is particularly well suited for reducing gas emissions from liquid farm manures and in particular from liquid manure, slurry and/or biogas fermentation residues, which preferably have a dry matter content of not more than 15% by weight.
  • Untreated farm manure usually has a pH value in the neutral or slightly alkaline range. Due to the manufacturing process, commercially available calcium cyanamide products often contain a certain amount of calcium oxide or calcium hydroxide. When these products are used to reduce emissions, the pH value of the farm manure is shifted slightly to higher pH values. To avoid emissions, setting a slightly acidic pH value in the range 4.5 to 6.8 in the farm manure has proven to be advantageous. In many cases, a pH value in the range 5.0 to 6.5 is even sufficient to achieve the desired reduction in gas emissions. The pH value is particularly preferably in a range between 4.8 and 6.3, in particular in the range 5.0 and 6.0.
  • Suitable cyanamide salts are calcium cyanamide and magnesium cyanamide, but also the corresponding alkali metal salts, such as sodium cyanamide and potassium cyanamide. Suitable cyanamide salts also include salts of cyanamide derivatives, such as acyl cyanamide salts, particularly acetyl cyanamide salts.
  • compositions which contain some by-products.
  • a calcium cyanamide composition often contains other ingredients, such as calcium hydroxide or elemental carbon. Since the production-related by-products are harmless, purification is not necessary for the purposes of the present invention. Consequently, compositions comprising cyanamide salts can also be used to reduce gas emissions from farmyard manure during its storage. Such compositions can also contain other additives, such as fillers, carrier materials, granulation aids, nitrification inhibitors, dyes, pigments, etc.
  • the cyanamide salt can be applied to a carrier material, for example.
  • This carrier material can be a material that is inert for agricultural purposes, an auxiliary agent approved for agricultural purposes, or a fertilizer.
  • carbonates such as calcium carbonate, magnesium carbonate, magnesium hydrogen carbonate, calcium hydrogen carbonate, and/or mineral fertilizers, are particularly preferably used as carrier materials.
  • These carrier materials can originate from large-scale industrial processes and contain a proportion of free carbon, coal or graphite.
  • compositions which contain 10 to 100% by weight of at least one cyanamide salt, in particular calcium cyanamide, based on the total weight of the composition.
  • a composition containing at least 20% by weight, more preferably at least 25% by weight, more preferably at least 30% by weight, more preferably at least 35% by weight, more preferably at least 40% by weight, more preferably at least 45% by weight, more preferably at least 50% by weight, and up to 100% by weight, in particular up to 95% by weight, in particular up to 80% by weight, in particular up to 55% by weight, of cyanamide salt, based on the total weight of the composition.
  • the composition can comprise up to 20% by weight of water, based on the total weight of the cyanamide salt composition, depending on the manufacturing process.
  • the cyanamide salt composition preferably contains less than 15% by weight, in particular between 1 and 10% by weight, of water.
  • Cyanamide salt compositions with a low content of hydroxides, such as calcium or magnesium hydroxide, or hydroxide-free compositions are advantageous because they reduce the amount of acid needed to acidify the manure. Since many oxides, such as calcium oxide and magnesium oxide, are converted to the corresponding hydroxides when slaked, it is also advantageous to keep the content of these substances in the compositions low or to eliminate them completely.
  • the production-related proportions of oxides or hydroxides are often 1 wt.% or more and should preferably be less than 25 wt.%, particularly preferably less than 20 wt.%, with the wt.% figures being based on the total weight of the cyanamide salt composition. Since a corresponding purification of the cyanamide salt compositions would often be too complex, such amounts in the composition can be tolerated.
  • cyanamide salt compositions which contain a) 25 to 95% by weight of cyanamide salt, in particular calcium cyanamide, b) up to 15% by weight of free carbon, coal or graphite, c) 1 to 40% by weight of at least one compound from the group of carbonates, in particular from the group of magnesium carbonate, magnesium hydrogen carbonate, calcium carbonate, calcium hydrogen carbonate or mixtures thereof, d) less than 20% by weight of oxides and hydroxides, in particular from the group of magnesium oxide, magnesium hydroxide, calcium oxide and calcium hydroxide or mixtures thereof; e) up to 15% by weight of water, in each case based on the total weight of the cyanamide salt composition.
  • cyanamide salt compositions are further preferred which comprise a) 25 to 95% by weight of cyanamide salt, in particular calcium cyanamide, b) up to 15% by weight of free carbon, coal or graphite, c) 1 to 30% by weight of at least one compound from the group of carbonates, in particular from the group of magnesium carbonate, magnesium hydrogen carbonate, calcium carbonate, calcium hydrogen carbonate or mixtures thereof, d) less than 20% by weight of oxides and hydroxides, in particular from the group of magnesium oxide, magnesium hydroxide, calcium oxide and calcium hydroxide or mixtures thereof; e) up to 15% by weight of water, f) up to 10% by weight of nitrates, each based on the total weight of the cyanamide salt composition.
  • Particularly preferred cyanamide salt compositions contain: a) 50 to 80% by weight of cyanamide salt, in particular calcium cyanamide, b) up to 15% by weight of free carbon, coal or graphite, c) 1 to 25% by weight of at least one compound from the group of carbonates, in particular from the group of magnesium carbonate, magnesium hydrogen carbonate, calcium carbonate, calcium hydrogen carbonate or mixtures thereof, d) less than 15% by weight of oxides and hydroxides, in particular from the group of magnesium oxide, magnesium hydroxide, calcium oxide and calcium hydroxide or mixtures thereof; e) up to 15% by weight of water, f) up to 5% by weight of nitrates, in each case based on the total weight of the cyanamide salt composition.
  • An alternative particularly preferred embodiment of the cyanamide salt composition contains: a) 35 to 55% by weight of cyanamide salt, in particular calcium cyanamide, b) 5 to 15% by weight of free carbon, coal or graphite, c) 5 to 30% by weight of at least one compound from the group of carbonates, in particular from the group of magnesium carbonate, magnesium hydrogen carbonate, calcium carbonate, calcium hydrogen carbonate or mixtures thereof, d) 1 to 20% by weight of oxides and hydroxides, in particular from the group of magnesium oxide, magnesium hydroxide, calcium oxide and calcium hydroxide or mixtures thereof; e) 1 to 15% by weight of water, f) 0.1 to 5% by weight of nitrates, in each case based on the total weight of the cyanamide salt composition.
  • a cyanamide salt composition is added to the farmyard manure. It is particularly advantageous if the cyanamide salt composition is added in an amount such that the cyanamide salt is present in an amount of 0.01 to 1.0% by weight, preferably in a proportion of 0.03% by weight to 0.8% by weight, particularly preferably from 0.05% by weight to 0.6% by weight and in particular from 0.06% by weight to 0.4% by weight, based on the total weight of the farmyard manure.
  • a closed storage facility is understood to mean devices that allow anaerobic storage or at least partially anaerobic storage.
  • Such storage facilities can be storage tanks, storage basins or pits that can be mechanically closed. This can be done, for example, with a tent roof or a concrete ceiling.
  • the oxygen can also be excluded by an aqueous phase or an aqueous supernatant on the surface of the farmyard manure.
  • the disclosed method can also be useful in open storage facilities or storage containers that have no cover or cannot be closed. In order to accelerate or improve the effect of the method, sufficient mixing of the cyanamide salt composition with the farmyard manure should be ensured.
  • the size of the deposit is not critical.
  • the volume X can be any reasonable size.
  • X means a volume measured in [m 3 ] that is between 0.001 m 3 ⁇ X ⁇ 20,000 m 3 , preferably between 0.1 m 3 ⁇ X ⁇ 10,000 m 3 and more preferably between 1 m 3 ⁇ X ⁇ 10,000 m 3 and particularly preferably between 10 m 3 ⁇ X ⁇ 10,000 m 3 .
  • the described process is characterized by the fact that the addition of the cyanamide salt composition and the acidification of the farm manure in the storage facilities can be carried out without any problems when the farm manure temperature is in the range of 0 °C to 60 °C.
  • the process can therefore be used in both winter and mid-summer conditions.
  • farm manure that comes directly from a fermentation process or is in a post-fermentation container or tank after a biogas process can be treated with the described process.
  • the manure is circulated with a propeller mixer or a stirring pump.
  • the deposit can be partially or completely filled.
  • the deposit should be filled with at least 5 vol.% of the farmyard manure.
  • at least 5 vol.% of the farmyard manure based on the volume of the deposit is introduced and the cyanamide salt composition is added and stirred in. Acidification can take place before, after and/or at the same time as the cyanamide salt is added. A further addition of farmyard manure can then take place. After this addition has been completed, the farmyard manure is circulated again in the deposit.
  • Propeller mixers driven by a tractor or an electric motor are suitable for circulating the farmyard manure in the storage facility.
  • Propeller mixers or built-in mixers with submersible motors that are permanently installed in the storage wall have proven to be particularly suitable, as have swivel, articulated and tower propeller mixers attached to the tractor that are immersed in storage tanks containing farmyard manure.
  • Stirring nozzles attached to feed pumps are also suitable for circulating the farmyard manure in the storage facility, in particular long-shaft stirring pumps with stirring nozzles driven by an electric motor or tractor or centrifugal pumps with a ripper.
  • the addition of the cyanamide salt composition and/or the acidification of the farmyard manure can be carried out once or in portions.
  • the addition of the composition or the acidification can be carried out i) once after or during the filling of the deposit with a first partial amount of farmyard manure, or ii) in portions after each partial filling of the deposit, or iii) once after or during the complete filling of the deposit with farmyard manure.
  • the method according to the invention can also be designed in such a way that the addition of the cyanamide salt composition or the acidification takes place in portions before, during and after a continuous or portion-wise filling of the deposit with farmyard manure.
  • livestock farming continuously produces farmyard manure, which is collected in the storage facility.
  • the exposure time of the cyanamide salt composition in the acidified farm manure is preferably at least 24 hours, particularly preferably more than 30 days, in particular > 50 days.
  • the storage time can also be significantly longer and last, for example, up to one year or, if desired, even longer.
  • the treatment of the farm manure using the method according to the invention can also begin some time after the storage facility has been filled with the farm manure.
  • Fresh farm manure is often characterized by the fact that the majority of the gas emissions only occur after storage for 30 to 60 days.
  • the treatment of the farm manure should therefore preferably take place before this.
  • a single treatment of the farm manure is usually sufficient to almost completely avoid gas emissions during storage for at least 6 months, usually even for at least 9 months or over a year. In practice, farm manure is not usually stored for longer periods. Even if the farm manure is treated several times, the gas emissions are permanently reduced.
  • the addition of the cyanamide salt composition and the acidification can also be carried out after a longer storage period of the farm manure, since significant gas development in the farm manure only begins after some time. It has been shown that even an addition after several weeks of storage of the farm manure enables a reduction in gas emissions.
  • the method according to the invention is therefore also suitable for stopping or inhibiting the microbial, enzymatic conversion of organic substrates in farm manure during its storage.
  • the amount of cyanamide salt required to effectively reduce gas emissions from farm manure depends in particular on the composition and solids content of the farm manure. In general, if the solids content is high, it makes sense to add larger amounts of cyanamide salt. Conversely, if the solids content is low, smaller amounts of cyanamide salt are recommended.
  • Table 4 Cumulative gas emissions per 1.00 kg of cattle manure in litres or millilitres.
  • CO2 emissions After 400 days of anaerobic storage, 3.51 L of CO2 were released per 1.00 kg of cattle manure in the reference experiment (V1). By acidifying to pH 6.0 and then adding CaCN2 (Example 1), emissions can be reduced by 94.9% to 0.18 L. An even more effective reduction was achieved by acidifying to pH 5.5 and then adding CaCN2 (Example 2). Compared to the reference experiment (V1), CO2 emissions could be reduced by 98.0% to 0.07 L.
  • CH4 emissions After 400 days of anaerobic storage, 3.17 L of CH4 were released in comparison test V2 based on 1.00 kg of cattle manure. By adding CaCN2 (Example 1), emissions can be reduced to 0.32 L, or 89.9%. If Example 2 is compared with V3, the combination of acidification and subsequent CaCN2 treatment (B1) shows a reduction in CH4 emissions from 4.39 L to 0.15 L, or 96.6%. Failure to use CaCN2 treatment, as investigated in V2 and V3, resulted in an increase in CH4 emissions of 891% (compared to Example 1) or 2827% (compared to Example 2). Compared to the reference test (V1) with a cumulative CF volume of 5.24 L based on 1.00 kg of cattle manure, the CF emissions were reduced by only 39.5% (V2) and 16.2% (V3) through pure manure acidification.
  • CO2 emissions After 400 days of anaerobic storage, in comparative example V2, 1.99 L of CO2 were released based on 1.00 kg of cattle manure. In contrast, by adding CaCN2 (example 1), emissions can be reduced to 0.18 L, or 91.0%. A comparison of example 2 with V3 shows that the combination of acidification and subsequent CaCN2 treatment reduced CO2 emissions from 2.05 L to 0.07 L, or 96.6%. Consequently, omitting CaCN2 treatment resulted in an increase in CO2 emissions of 1006% (compared to B1) or 2829% (compared to B2). Compared to the reference experiment (V1) with a cumulative CO2 volume of 3.51 L based on 1.00 kg of cattle manure, CO2 emissions were reduced by only 43.3% (V2) and 41.6% (V3) through pure manure acidification.
  • the pure acidification of cattle manure can reduce the emission of certain harmful gases, such as methane and CO2.
  • certain harmful gases such as methane and CO2.
  • sulphuric acid when used, the emission of toxic H2S increases due to the addition of sulphate.
  • acidification and the addition of CaCN2 are combined over a period of 400 days, the emission of harmful gases from the manure, including hydrogen sulphide, can be significantly reduced compared to pure acidification.
  • H2SO4 The one-time application of H2SO4 resulted in more than eleven times the amount of H2S being emitted during anaerobic manure storage than in the control experiment (V1). Consequently, the one-time acidification of manure with H2SO4 inhibits general gas emissions, but appears to specifically promote desulfurization and thus H2S emissions. Additional treatment of cattle manure with CaCN2 compensates very effectively for this effect and leads to significantly reduced H2S emissions.
  • CH4 emissions After 400 days of anaerobic storage, 4.76 L of CH4 were released in comparison test V4 based on 1.00 kg of cattle manure. By additional acidification, emissions were reduced to 0.32 L, or 93.3% (Example 1), or 0.15 L, or 96.8% (Example 2). A similar reduction is obtained by comparing examples 1 and 2 with comparison example V5.
  • the CH4 emissions through the combination of acidification and subsequent CaCN2 treatment fall from 3.38 L to 0.32 L, or 90.5% (Example 1), or 0.15 L, or 95.6% (Example 2).
  • H2SO4 By omitting prior manure acidification with H2SO4 as in examples 1 and 2, an increase in CH4 emissions of 1388-3073% and 956-2153% respectively is achieved.
  • V1 reference experiment
  • V5 the CH4 emissions are reduced by 9.16% (V4) and 35.5% (V5) by the pure CaCN2 treatment.
  • CO2 emissions After 400 days of anaerobic storage, 2.46 L of CO2 were released in comparison test V4 based on 1.00 kg of cattle manure. Additional acidification resulted in a reduction in CO2 emissions to 0.18 L, or 92.7% (Example 1), or 0.07 L, or 97.2% (Example 2). A slightly smaller reduction results from the comparison of Examples 1 and 2 with V5. Compared to V5, CO2 emissions in B1 and B2 fell from 1.71 L to 0.18 L, or 89.5%, or 0.07 L, or 95.9%. The omission of prior manure acidification with H2SO4 causes an increase in CO2 emissions compared to B1 and B2 by 1267-3414% (V4) and 850-2343% (V5).
  • H2S emissions After 400 days of anaerobic storage, 0.01 mL of H2S was released per 1.00 kg of cattle manure in comparison experiments V4 and V5. In examples 1 and 2, the additional acidification resulted in an increase in emissions to 4.90 mL and 1.04 mL respectively. Not acidifying the manure with H2SO4 resulted in a reduction in H2S emissions of 99.0-99.8% (V4/V5 compared to B1 and B2). Compared to the reference experiment (V1) with a cumulative FhS volume of 3.61 mL per 1.00 kg of cattle manure, the H2S emissions were reduced by 99.7% (V4 and V5) through the pure CaCN2 treatment.
  • the findings of the second series of tests confirm or expand on the results of the first series of tests.
  • the emissions of harmful gases from farmyard manure can be significantly reduced by a combined application of acidification and the addition of CaCN2 compared to pure acidification.
  • a low dosage of CaCN2 can compensate for the sometimes considerable H2S emissions.
  • Table 13 Cumulative gas emissions in V8 and V9 (based on 1.00 kg cattle manure) in litres and millilitres.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Biotechnology (AREA)
  • Botany (AREA)
  • Environmental & Geological Engineering (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne un procédé de réduction d'émissions de gaz nocifs à partir d'engrais organiques pendant leur stockage, le procédé comprenant les étapes consistant à acidifier l'engrais organique et à ajouter une composition de sel de cyanamide à l'engrais organique.
EP23786023.4A 2022-10-06 2023-10-04 Procédé de réduction d'émissions de gaz nocifs à partir d'engrais organiques Pending EP4598892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022125827.0A DE102022125827A1 (de) 2022-10-06 2022-10-06 Verfahren zur Reduzierung schädlicher Gasemissionen aus Wirtschaftsdüngern
PCT/EP2023/077461 WO2024074560A1 (fr) 2022-10-06 2023-10-04 Procédé de réduction d'émissions de gaz nocifs à partir d'engrais organiques

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EP4598892A1 true EP4598892A1 (fr) 2025-08-13

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EP23786023.4A Pending EP4598892A1 (fr) 2022-10-06 2023-10-04 Procédé de réduction d'émissions de gaz nocifs à partir d'engrais organiques

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US (1) US20260000010A1 (fr)
EP (1) EP4598892A1 (fr)
AU (1) AU2023355798A1 (fr)
DE (1) DE102022125827A1 (fr)
WO (1) WO2024074560A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2026109169A1 (fr) * 2024-11-24 2026-05-28 Stercode Gmbh & Co Kg Procédé de traitement de fumier liquide, de préférence de fumier liquide agricole, agent contenant un acide dicarboxylique et/ou acide dicarboxylique à cet effet, et utilisation dudit agent

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3966450A (en) 1974-08-12 1976-06-29 Fmc Corporation Animal waste odor treatment
DK0612704T3 (da) 1992-12-30 1995-12-27 Sta Pro Environment Bv Fremgangsmåde til syrning af gødning, ved hvilken ammoniak fikseres, og carbondioxidgas fraledes
JPH09328383A (ja) * 1996-06-06 1997-12-22 Denki Kagaku Kogyo Kk 液状肥料
JP2003519065A (ja) 1999-12-08 2003-06-17 オー ダブリュー ハートマン リチャード 安定化した高効率にて制御可能に放出されるカルシウムシアナミド
JP3568468B2 (ja) * 2000-09-04 2004-09-22 電気化学工業株式会社 殺ベロ毒素産生性大腸菌剤
AT507499B1 (de) 2008-10-27 2010-09-15 Andree Mag Gilhofer Verfahren zur regulierten fermentation von güllen
WO2012031622A1 (fr) 2010-09-07 2012-03-15 Green Energy Technologies Cv Procédé d'acidification du fumier
US9359263B2 (en) 2011-11-30 2016-06-07 Bi-En Corp. Fluid ionized compositions, methods of preparation and uses thereof
CN107382428A (zh) * 2017-08-31 2017-11-24 广西吉朋投资有限公司 一种南瓜肥料及其制备方法
DE102018128173A1 (de) 2018-11-12 2020-05-14 Alzchem Trostberg Gmbh Verfahren zur Reduzierung der Gasemission aus Wirtschaftsdüngern

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WO2024074560A1 (fr) 2024-04-11
NZ818674A (en) 2025-07-25
US20260000010A1 (en) 2026-01-01
DE102022125827A1 (de) 2024-04-11
AU2023355798A1 (en) 2025-02-27

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