WO2018009052A1 - Procédé de préparation d'un engrais biologique - Google Patents

Procédé de préparation d'un engrais biologique Download PDF

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Publication number
WO2018009052A1
WO2018009052A1 PCT/MY2017/050034 MY2017050034W WO2018009052A1 WO 2018009052 A1 WO2018009052 A1 WO 2018009052A1 MY 2017050034 W MY2017050034 W MY 2017050034W WO 2018009052 A1 WO2018009052 A1 WO 2018009052A1
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WO
WIPO (PCT)
Prior art keywords
waste
gas
wood tar
water
pyroligneous acid
Prior art date
Application number
PCT/MY2017/050034
Other languages
English (en)
Inventor
Gee Shyang SAW
Original Assignee
Saw Gee Shyang
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 Saw Gee Shyang filed Critical Saw Gee Shyang
Publication of WO2018009052A1 publication Critical patent/WO2018009052A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033—Other features
    • B01D5/0051—Regulation processes; Control systems, e.g. valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/0072—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/0093—Removing and treatment of non condensable gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/0096—Cleaning
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C05F11/08—Organic fertilisers containing added bacterial cultures, mycelia or the like
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F9/00—Fertilisers from household or town refuse
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F9/00—Fertilisers from household or town refuse
    • C05F9/02—Apparatus for the manufacture
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C5/00—Production of pyroligneous acid distillation of wood, dry distillation of organic waste
    • 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
    • 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
    • Y02E50/10—Biofuels, e.g. bio-diesel

Definitions

  • This invention relates to the field of a fertiliser. More particularly, the present invention relates to a method of producing a bio-fertiliser from organic waste which contains high amount of plant growth promoting bacteria (PGPB) and absorbable nutrients for a plant.
  • PGPB plant growth promoting bacteria
  • organic waste material is produced as a result of agricultural, industrial, and household activities. These activities can include, but are not limited to, crops harvesting, trees chopping, vegetable oil extraction, and cooking.
  • organic waste refers to any biodegradable waste containing organic matter which can be broken down into carbon dioxide, water, methane, or simpler organic molecules by processes carried out by microorganisms.
  • the organic waste can include, but is not limited to, residual food, tree trunks, rice husk, and empty fruit bunches.
  • landfill One of the most commonly adopted methods of handling the waste is by direct disposal in a landfill. However, it is known that landfill can cause numerous social and environmental impacts.
  • Harmful pollutants may leach out from the waste and contaminate the soil and water source.
  • greenhouse gases are produced as a result of decaying waste in the landfill and can be flammable and potentially explosive.
  • Chinese Patent No. 1103635 has disclosed a method of producing organic fertiliser from municipal waste. Collected waste is decomposed and turned into particles-like substance. The decomposed waste is then subjected to high temperature carbonisation. The pH of the carbonised waste is adjusted to a desired level and sieved to obtain organic fertiliser of a desired particle size, whereby the retentate is again subjected to decomposition and carbonisation. Minerals and trace elements are added to the waste as additional nutrients for plants.
  • Cisode No. 102786362 has disclosed a method of producing an organic fertiliser which also a pesticide, and a composition thereof.
  • bamboo sawdust is carbonised at high temperature to obtain charcoal and bamboo vinegar.
  • Moisture is added to rapeseed meal, dregs of traditional Chinese medicines, slow-release potassium chloride, Celastrus angulatus, and patrina.
  • Paulownia sawdust, charcoal, bamboo vinegar, faeces, nitrogen-phosphorus-potassium compound fertilizer, and living bacteria are added for fermentation under high temperature environment. Thereafter, zinc sulfate, magnesium sulfate, sodium molybdate, and borax are added accordingly.
  • One of the major drawbacks of the prior art is that the time needed for producing the organic fertiliser is incredibly long, thereby causing the cost of production exceptionally high. Further, the disclosed processes does not provide an effective way of minimising pollution from waste handling. The discharged effluent from the processes still contain a substantial amount of pollutant. The performance of the organic fertiliser is also not sustainable and satisfactory as frequent re-application of the fertiliser is needed due to fast depletion of the nutrients and organic matters, as well as fast decreasing of available living PGPB which are important to maintain a healthy soil condition.
  • One of the objects of the invention is to provide an improved method of producing a bio-fertiliser that is environmental friendly, fast, and cheap in cost of production.
  • Another object of the invention is to produce a bio-fertiliser which has an improved fertilising performance. Still another object of the invention is to produce a bio-fertiliser containing high amount of available organic and inorganic nutrients to a plant, as well as a sustainable amount of plant growth promoting bacteria (PGPB) that improve the absorption of nutrients by the plant.
  • PGPB plant growth promoting bacteria
  • Yet another object of the invention is to improve soil condition and provide a suitable environment for maintaining a sustainable amount of PGPB in soil.
  • the embodiment of the present invention describes a method of producing bio-fertiliser from organic waste comprising the steps of (a) carbonising the waste in a carboniser at 250-750 °C for 5-13 hours; (b) gradually cooling the carbonised waste for 8-10 hours; (c) separating pyroligneous acid and wood tar from the gaseous products; (d) adding the pyroligneous acid, the wood tar, and plant-growth-promoting-bacterial (PGPB) growth factors to the carbonised waste; and (e) fermenting the mixture.
  • the method further comprises a step of pulverising the carbonised waste prior to the step (d).
  • a portion of the gaseous products is recycled to the carboniser
  • the recycled gaseous products are mixed with fresh air prior to carbonisation.
  • the recycled gaseous products are residual gas from step (c).
  • the pH of the mixture from step (d) is adjusted to 6-8 prior to fermentation.
  • a further embodiment of the invention is a system for separating pyroligneous acid and wood tar from gaseous products of carbonisation as claimed in any of the preceding claims comprising a condenser for allowing at least partial condensation of pyroligneous acid and wood tar; a water bath for dissolving pyroligneous acid and wood tar; an atomiser above the water bath for producing water mist to encapsulate a portion of the gas particles; and a gas purifying arrangement above the atomiser.
  • the system further comprises a gas pump for introducing the gas into the water, a bubbling means for inducing gas bubbles in the water, and a waterwheel within the water bath for encourage mixing of the gas and the water.
  • FIGURE 1 shows two exemplary apparatus set-ups for the method as embodied by one of the preferred embodiments of the invention.
  • This invention relates to the field of a fertiliser. More particularly, the present invention relates to a method of producing a bio-fertiliser from organic waste which contains high amount of plant growth promoting bacteria (PGPB) and absorbable nutrients for a plant.
  • PGPB plant growth promoting bacteria
  • the invention discloses a method of producing bio-fertiliser from organic waste comprising the steps of (a) carbonising the waste in a carboniser at 250-750 °C for 5-13 hours; (b) gradually cooling the carbonised waste for 8-10 hours; (c) separating pyroligneous acid and wood tar from the gaseous products; (d) adding the pyroligneous acid, the wood tar, and plant-growth- promoting-bacterial (PGPB) growth factors to the carbonised waste; and (e) fermenting the mixture.
  • organic waste herein refers to any waste material containing biodegradable organic matter which can be broken down into carbon dioxide, water, methane, or simpler organic molecules by the action of microorganisms, particularly bacteria.
  • the organic waste may include, but is not limited to, biogas residue, residual food, tree trunks, rice husk, and empty fruit bunches.
  • the organic waste used herein is derived from oil palm waste, such as palm kernel shells, empty fruit brunches, decanter cake of palm oil mill effluent, or palm fronds.
  • carbonisation generally refers to conversion of biodegradable organic matter into carbon or carbon-containing residue in an oxygen-depleted environment
  • the carbonisation process herein shall not be confused with the carbonisation process mentioned in any of the prior art.
  • the conventional carbonisation of organic waste involves nearly complete conversion, usually above 90% conversion, of the organic matter into ash which is the simplest form of combustion or carbonisation product that mainly contains only carbon element or non-absorbable elements such as magnesium (Mg) or calcium (Ca), under high temperature.
  • Mg magnesium
  • Ca calcium
  • Most nutrients useful for plant growth, such as nitrogen (N), phosphorus (P), potassium (K), and some trace elements are degraded.
  • the carbonisation herein aims to minimise ash formation and achieve higher amount of simpler carbon molecules that contain higher amount of absorbable nutrients for a plant.
  • the waste is collected and carbonised in a carboniser (1) at 250-750 °C for 5-13 hours.
  • a carboniser (1) Prior to carbonisation, it is preferable to comminute the waste into smaller particle size for the ease of handling.
  • the comminute can be sorted into two sets, one with a particles size of 2.5 cm and below, the other with a particle size of above 2.5 cm.
  • the waste with a particles size of 2.5 cm and below is carbonised at 250-550 °C while the waste with a particles size of above 2.5 cm is carbonised at 250-750 °C.
  • Fire is ignited in the carboniser (1) for approximately 5-15 minutes at the presence of oxygen, preferably with a continuous supply of fresh air, to combust the waste.
  • carbonisation is initiated by controlling the supply of air to stop the combustion but to continue heating the waste in an oxygen-limited environment.
  • the air supply during the carbonisation is oxygen-depleted or -limited air. Nevertheless, fresh air may be used as the air supply but a careful control on the incoming flow rate is needed to ensure the oxygen content in the carboniser (1) is controlled below a threshold to maintain the carbonisation instead of combustion.
  • the heating is terminated by stopping the air supply and the carbonised waste is allowed to gradually cool to room temperature for 8-10 hours. Despite heating is stopped after termination of the air supply, some carbon molecules may continue be broken down into simpler carbon molecules as long as the temperature of the carbonised waste is still at a favourable level.
  • pyroligneous acid and wood tar are separated from the gaseous products of the carbonisation, which also purifies the gas prior to discharge or further use.
  • pyroligneous acid can be used interchangeably with "wood vinegar” or “wood acid” and shall refer to a dark liquid produced through carbonisation, which occurs when capitaous material is heated in an oxygen-depleted environment.
  • wood tar is also a liquid obtained as one of the products of carbonisation of ligneous material.
  • the pyroligneous acid and wood tar are separated by condensation and forced dissolution whereby an exemplary separation method is described in the following description.
  • the gaseous products are first passed through a condenser (2), preferably made from a hollow tube (2 A) configured in a serpentine fashion and jacketed by a coolant (2B), in which some pyroligneous acid and wood tar are condensed and collected at the bottom ends of the serpentine tube (2A).
  • a discharge opening equipped with a control valve (2C) is located at the bottom end of the tube (2A).
  • the remaining gaseous products are introduced to a closed water bath (3), forced to mix with the water by a pump (not shown), and converted into bubbles by a bubbling means (not shown).
  • a waterwheel (not shown) in the bath (3) further mixes the water and the gas.
  • a portion of the pyroligneous acid and wood tar as well as some other impurities are forced to dissolve in the water.
  • a portion of the gas rising above the water bath (3) is brought into contact with mist produced by an atomiser (4) above the water bath (3) so as to force some of the pyroligneous acid, wood tar, and other impurities to fall back to the water bath (3).
  • a portion of the water in the bath (3) is atomised.
  • the residual gas can be partially recycled or further treated with a gas purifying arrangement (5) before discharge.
  • the pyroligneous acid and wood tar from the condenser (2) and the acid and wood tar-containing water from the water bath (3) are to be collected for further use.
  • the air supply is a mixture of fresh air and recycled gas.
  • the recycled gas may be a portion of the gaseous products directly from the carboniser (1) or residual gas after separation of pyroligneous acid and wood tar.
  • the carboniser (1) can be operated at a higher temperature as the recycled gas is hot.
  • the recycled gas directly from the carboniser (1) has a higher temperature than that of the residual gas after the separation process.
  • the oxygen content of the air supply in the carboniser (1) can be controlled and reduced as the nature of the recycled gas is oxygen-depleted.
  • the oxygen content and temperature in the carboniser (1) can be controlled by controlling the flow rate of the air supply, amount of recycled gas in the air supply, and the type of the recycled gas, and the abovementioned parameters could be controlled by the use of control valves (6A) and blower fan (6B) at various position of the apparatus set-up, as illustrated in FIGURE 1.
  • pyroligneous acid, wood tar, and plant-growth-promoting-bacterial (PGPB) growth factors are added to the carbonised waste.
  • palm oil decanter cake, palm oil mill effluent (POME), and palm ash can be further added to the carbonised waste.
  • the carbonised waste is crushed into particle size of 1 - 200 mesh to increase the surface area of thereof for subsequent bio-reactions.
  • sieving is not necessary.
  • the pyroligneous acid and wood tar are preferably obtained from the abovementioned separation step. However, it shall not limit the use of wood vinegar or wood tar obtained from other sources.
  • the pH of the mixture is adjusted to 6- 8 which is favourable for cultivation of PGPB and fermentation of the mixture.
  • wood vinegar and wood tar are particularly necessary as they contain various elements and compounds that are useful for plant growth and soil conditioning as well as promoting sustainable growth of PGPB.
  • PGPB growth factors are a bacteria attracting agent which creates a favourable environment that attracts PGPB to grow.
  • the bioactive comprises a mixture of nutrients, such as sugar and protein, enzymes, and citric acid which are required for cultivation of PGPB. It shall be noted that the PGPB are not added to the carbonised waste but they are attracted to continuously grow thereon by providing a suitable environment for them to live. Hence, the amount of the PGPB is always sustainable.
  • the mixture is subsequently exposed to an environment favourable for fermentation.
  • the mixture is allowed to ferment, by the action of the PGPB, at a 50-70 °C for 2 hours to 5 days. It is important to ensure that the environment has sufficient aeration for providing oxygen to the PGPB to carrying out aerobic processes.
  • insoluble carbonaceous materials or any other non-readily absorbable plant nutrients are converted, by the action of the PGPB, to readily absorbable organic carbonaceous materials or nutrients. With such, the suitability of the environment for bacteria growth is also maintained simultaneously. Since a suitable environment is provided, the fermentation process continues even the mixture is removed from the fermentation environment.
  • the fermented waste or the bio-fertiliser shall contain at least 500,000 Bacillus spp. per gram of waste, total nitrogen, phosphorus, and potassium (NPK) content of 9-15wt%, and organic matter of at least 50wt%. Further NPK and other nutrients such as magnesium oxide (MgO), boron (B), and trace elements can be added to the bio-fertiliser according to the needs of various plants.
  • the bacteria in the fertiliser continuously promote plant growth by preventing deleterious effects of phytopathogenic organisms and producing plant hormones.
  • the bacteria also increases the absorbable nutrients in soil by solubilising the nutrients, enhancing resistance to stress, stabilising soil aggregates, and improving soil structure and organic matter content.
  • the bacteria also retain more soil organic N, and other nutrients in the plant-soil system, thus reducing the need for inorganic fertiliser containing NPK and enhancing release of the nutrients.
  • a further embodiment of the invention is a system for separating pyroligneous acid and wood tar from gaseous products of carbonisation as described in any of the preceding description comprising a condenser (2) for allowing at least partial condensation of pyroligneous acid and wood tar; a water bath (3) for dissolving pyroligneous acid and wood tar; an atomiser (4) above the water bath for producing water mist to encapsulate a portion of the gas particles; and a gas purifying arrangement (5) above the atomiser (4).
  • the condenser comprises a hollow tube (2A) configured in a serpentine fashion where the gas is passed through.
  • the tube (2A) is jacketed with a coolant (2B), preferably a water coolant, which causes condensation of wood vinegar and wood tar within the tube (2A).
  • a water pump (not shown) may be provided for introducing a portion of the water from the water bath (3) to the atomiser (4).
  • the gas purifying arrangement (5) further remove any impurities and pollutants from the gas prior to discharge.
  • a gas pump (not shown) is provided for introducing the gas into the water.
  • the gas pump can be of any type that capable of forcing the gas to diffuse within water and allow appropriate mixing between the gas and the water so that some of the pyroligneous acid, wood tar, and other impurities could be dissolved.
  • a bubbling means (not shown) is provided for inducing and converting the gas into bubbles in water, which further enhance dissolution of pyroligneous acid, wood tar, and other impurities in water.
  • a waterwheel (not shown) is provided within the water bath (3) for encourage further mixing of the gas and the water. It is important to prolong the contact time between the water and the gas to allow higher amount of dissolvable material to dissolve in water, including the pyroligneous acid and wood tar.
  • the gas purifying arrangement comprises two sections, in which a first section handles wet gas while a second section handles dry gas. Moisture gas is purified in the first section to form pyroligneous acid.
  • Serpentine condenser tube is preferably first utilised to condense any moisture and acid.
  • the first stage removes majority of moisture and large gas particles while the second stage is a filter membrane of 1-5 ⁇ pore size which removes smaller gas particles to achieve purification efficiency of 60-90%.
  • Remaining dry gas from the first section is further treated in the second section.
  • the second section may include a plurality of filters such as activated carbon, ionic filter, magnetic filter, and electrostatic filter. With such treatment, impurities in gas could be removed simultaneously and renders the discharge gas cleaner and less polluting.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Manufacturing & Machinery (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Biochemistry (AREA)
  • Fertilizers (AREA)

Abstract

La présente invention concerne un procédé de production d'un engrais biologique à partir de déchets organiques comprenant les étapes (a) de carbonisation des déchets dans un carboniseur à 250 à 750 °C pendant 5 à 13 heures ; (b) de refroidissement progressif des déchets carbonisés pendant 8 à 10 heures ; (c) de séparation de l'acide pyroligneux et du goudron de bois des produits gazeux ; (d) d'addition de l'acide pyroligneux, du goudron de bois, et de facteurs de croissance de bactéries favorisant la croissance végétale (PGPB) aux déchets carbonisés ; et (e) de fermentation du mélange.
PCT/MY2017/050034 2016-07-05 2017-07-05 Procédé de préparation d'un engrais biologique WO2018009052A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2016702486A MY191953A (en) 2016-07-05 2016-07-05 A method of producing bio-fertiliser
MYPI2016702486 2016-07-05

Publications (1)

Publication Number Publication Date
WO2018009052A1 true WO2018009052A1 (fr) 2018-01-11

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WO (1) WO2018009052A1 (fr)

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CN109612010A (zh) * 2018-12-10 2019-04-12 广东美的制冷设备有限公司 新风***的控制方法、装置及新风***
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN109612011A (zh) * 2018-12-10 2019-04-12 广东美的制冷设备有限公司 新风***的控制方法、装置及新风***
CN109612010A (zh) * 2018-12-10 2019-04-12 广东美的制冷设备有限公司 新风***的控制方法、装置及新风***
CN109612011B (zh) * 2018-12-10 2021-06-18 广东美的制冷设备有限公司 新风***的控制方法、装置及新风***
CN112480955A (zh) * 2020-10-21 2021-03-12 西北农林科技大学 一种分离木醋液与木焦油的方法

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