WO2009043763A1 - Photobioréacteur extérieur - Google Patents
Photobioréacteur extérieur Download PDFInfo
- Publication number
- WO2009043763A1 WO2009043763A1 PCT/EP2008/062713 EP2008062713W WO2009043763A1 WO 2009043763 A1 WO2009043763 A1 WO 2009043763A1 EP 2008062713 W EP2008062713 W EP 2008062713W WO 2009043763 A1 WO2009043763 A1 WO 2009043763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- freiluftphotobioreaktoren
- light
- leds
- moldings
- luminescent
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/18—Open ponds; Greenhouse type or underground installations
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/02—Photobioreactors
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/26—Constructional details, e.g. recesses, hinges flexible
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/56—Floating elements
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M31/00—Means for providing, directing, scattering or concentrating light
- C12M31/02—Means for providing, directing, scattering or concentrating light located outside the reactor
- C12M31/06—Lenses
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M31/00—Means for providing, directing, scattering or concentrating light
- C12M31/10—Means for providing, directing, scattering or concentrating light by light emitting elements located inside the reactor, e.g. LED or OLED
Definitions
- the invention relates to outdoor photobioreactors with artifi- ziellen radiation sources.
- Outdoor photobioreactors are used in particular for the mass production of microalgae and macroalgae, photosynthetic bacteria, mosses or other plant cell cultures. Such microalgae and cyanobacteria are able to transform into biomass with the help of light energy, CO2 and water (photosynthesis).
- Microalgae can be divided into different classes. The four main classes are Bacillariophyceae (Diatoms), Chlorophyceae (Green algae), Cyanophyceae (Blue algae) and Chrysophyceae (Gold algae).
- Bacilliophyceae and Chrysophyceae fix CO2 in the form of carbohydrates and natural oils. Blue algae fix not only CO 2 but also nitrogen from the atmosphere.
- CO2 as a carbon source for algae cultivation can be fed into the photobioreactor as air, as CO2-enriched air, as CO 2 -containing exhaust gas or as pure CO 2.
- Such photobioreactors can also be used for CO 2 removal from exhaust gases.
- the mass production of algal biomass as a food, renewable energy or chemical raw material is carried out today, preferably in shallow-water algae farms or open bioreactors with the exclusive use of direct sunlight due to the relatively high compared to product value electricity costs. Due to the robustness of algae used for mass production, their handling is possible in open basins or within floating boundaries delineated by pontoons or buoys and does not require a closed reactor.
- the open bioreactors generally consist of large open shallow basin systems, eg circular pool systems with diameters of up to 45 m, and rotating mixing arms or large open flat channel loops with recirculating propellers.
- WO-A 91/18970 the illumination of algae reactors by means of LEDs or lasers is known.
- WO-A 2007/070452 describes panels populated with LEDs as light sources for photobioreactors.
- JP-A 10-98964 describes acrylic glass cylinders equipped with LEDs as a light source for illuminating tanks with algae cultures.
- From JP-A 2002-315569 equipped with LEDs acrylic glass sheets are known as a light source for algae cultures.
- LED luminous bodies which are enclosed in flexible, transparent materials, in particular acrylate-based, are used in JP-A 11-89555 as light sources for the cultivation of algae.
- JP-A 2000-325073 describes a two-part tank for algae rearing, which is divided by means of a transparent and equipped with LEDs acrylic plate.
- JP 2007-040176 describes the use of wind turbines for energy supply of algae rearing.
- the radiation sources used for the light entry should also be provided in a form that protects the luminous body effectively against environmental influences.
- the invention relates to outdoor photobioreactors with artificial radiation sources, characterized in that as radiation sources one or more of the group containing equipped with LEDs molded parts, light guides, luminescent
- Moldings are used, which are arranged in the interior of the reactor.
- the outdoor photobioreactors can have any desired shape.
- open-air outdoor bioreactors for example, rectangular tubs, round basins, or basins completely or partially recessed in the ground are conceivable.
- the side walls or bottoms of the reactors may be made of any materials, translucent or non-transparent. For example, made of metal or plastic.
- the outdoor photobioreactors can also be built in inland waters or on the open sea. Again, any shape shapes are possible.
- the side walls or bottoms of the reactors may be rigid or flexible, for example
- Foil be executed.
- any materials such as metal or plastic can be used.
- the side walls can be firmly anchored in the ground or formed floating in the form of films.
- the bottom surfaces may be formed by the sea or seabed or rigidly connected as a foil with floating side walls.
- sides and / or bottom surfaces can be formed by a filter medium which is a transport barrier for the algae but is permeable to water, air or CO2.
- the dimensioning is arbitrary and can be of side lengths or diameters of a few meters up to 100 m, preferably up to 30 m. While the depth of the outdoor bioreactors will generally not exceed 1 to 2 meters, the depth of the reactors when installed in inland waters or at sea is less limited. Depths of one meter to 100 meters are conceivable, preferably depths of up to 30 meters.
- the anchoring of the outdoor photobioreactors preferably takes place on masts, piers, buoys, pontoons or even offshore platforms, which at the same time take over carrier function for renewable energy generation systems, such as photovoltaic or wind energy, and possibly energy storage systems.
- the outdoor photobioreactor may also be limited by the tanks of large tankers.
- these are preferably height-adjustable for anchoring by means of tension, fixed to water-based boundary walls or supports firmly anchored in the ground.
- the intermediate support of large areas takes place in tidal waters, preferably on floating buoys or pontoons.
- the outdoor photobioreactors may be open or covered with, preferably transparent, sheets or plates. Also suitable as a cover are floating films with integrated Fresnel lenses and light guides arranged thereon. Also suitable are films which are coated with a thin photovoltaic layer or films of organic photovoltaic material. The energy thus collected during the day can be passed on to LED moldings via a storage medium.
- the light entry into the outdoor photobioreactor takes place in addition to the sun's rays by means of artificial radiation sources, It can be fitted with LEDs molded parts.
- Suitable LEDs are radiation-emitting semiconductor components of organic or inorganic semiconductors.
- the LEDs may already be plastics, usually silicon, encapsulated diodes or unencapsulated diodes.
- the LEDs can radiate in the infrared range, in the visible range or in the UV range. The choice depends on the intended applications. For photosynthesis in outdoor photobioreacto- LEDs are preferred which radiate in the visible range, in particular red light.
- the embedded in the Formkorper LED Leuchtkorper can emit at the same wavelength. However, it is also possible to combine LED illuminants with different radiation characteristics.
- a plurality of LED luminous bodies are conductively connected to one another, connected in series and / or in parallel.
- the luminous element arrangement can be connected to sensors as well as to measuring / control devices.
- the number of luminous bodies and their arrangement to each other depends on their application.
- the LED luminaires can be operated continuously or pulsed.
- the molded parts fitted with LEDs can be made of any desired materials which are transparent at the irradiated wavelength.
- thermoplastic or thermosetting plastics such as acrylic glass, polyethylene, polypropylene, PVC, polyamides, polyesters such as PET.
- LED silicone molded parts as described in DE-A 102007025749. Their disclosure in this regard should also be the subject of this application (incor porated by reference).
- the LEDs are embedded in a silicone matrix formed of an inner soft silicone matrix surrounded by one or more harder silicone materials.
- Suitable sources of artificial radiation are also light guides.
- a light guide is a fiber made of a transparent, light-transmitting material, usually glass or plastic, which is the Transport of light or infrared radiation is used.
- Examples of light guides are optical waveguides, glass fibers, polymeric optical fibers or other light-conducting components made of plastic and fiber optic components.
- phosphorescent light guides which can store light for many hours, and can deliver the sunlight absorbed during the day during the night.
- the light guides are equipped so that the light is emitted evenly over the entire extent of the light guide.
- the optical fibers may be equipped with a lens, such as a Fresnel lens, to focus and amplify the light prior to being introduced into the optical fiber.
- the use of optical fiber moldings as a radiation source in addition to LED moldings is advantageous during operation during the day.
- thermoplastic silicone elastomers In the light guides, those based on thermoplastic silicone elastomers (TPSE) are preferred.
- Thermoplastic silicone elastomers contain an organopolymer fraction, for example polyurethane or polyvinyl ester, and a SiIi- conanteil, usually based on polydialkylsiloxane-based of the above specification.
- Suitable thermoplastic silicone elastomers are commercially available, for example the corresponding Geniomer R types from Wacker Chemie.
- the light guides on the head with a Fresnel lens preferably with up to 1000-fold sunlight gain, equipped and direct the light in the depth of the open-air photobioreactor.
- a Fresnel lens preferably with up to 1000-fold sunlight gain
- suitable shaping for example via prisms, the light can be emitted evenly to the environment.
- the light guides are combined with floating films which are equipped with integrated Fresnel lenses.
- the light guides are placed on the underside of the foils and guide the light captured by the Fresnel lens down into the depth.
- Another preferred embodiment is also films with integrated LEDs.
- the shape of the LED moldings and the light guide is arbitrary. They can be in the form of hoses, as bands, as tubes, as rods, as plates, as prisms or in the form of mats. Plates, mats or tapes are, in particular in the case of LED moldings as a radiation source, preferably used to equip the inner walls of the outdoor photobioreactor with radiation sources.
- the design in the form of tubes, rods, prisms or hoses lends itself to the installation of radiation sources in the reactor interior.
- a plurality of LED molded parts which are flowed around by the reactor contents and formed, for example, as tubes, hoses or plates, can be combined as tube, hose or plate bundles to form light fixtures.
- the luminous bodies may be arranged offset to one another in such a manner (for example, twisted) that they illuminate the surrounding space completely and homogeneously.
- the outdoor photobioreactor may also contain LED moldings in tubes or plate form, through which the reactor contents flow. Several tubes or plates can be combined to form tube bundles.
- the dimensioning of the LED molded parts or the optical fiber molded parts is arbitrary and can be adapted to the reactor size.
- the artificial radiation sources can be permanently installed in the open-air photo bioreactor.
- the radiation sources are preferably arranged in a large number of tensions in a net shape. With such an arrangement, large areas can evenly illuminate up to water depths of several meters to 100 meters.
- the corner points of the tension can be fixed to pylons or pillars anchored firmly in the ground, to pelvic or tank walls constructed in terms of hydraulic, deep, high, apparatus or shipbuilding, or to buoys or pontoons anchored in a floating manner. Preference is given to using molded parts equipped with LEDs in combination with light guides and / or luminescent shaped parts.
- the distance between the LED moldings and / or the optical waveguide moldings can be increased by supporting light distribution in the interior of an open-air photobioreactor with luminescent shaped parts, for example luminescent light-carrier particles.
- luminescent silicone floats Preference is given to luminescent silicone floats with set optimum wavelength and minimal density difference to the aqueous medium.
- These luminescent silicone floats preferably consist of one or more luminescent substances in a silicone matrix of, for example, thermoplastic silicone elastomers as described in EP 1412416 Bl or EP 1489129 B1.
- Such luminescent light carrier particles circulate in the open-air photobio reactor, charging with light at the water surface, sinking down and emitting the light in depth.
- the light input alone or in combination by luminescent moldings or films is possible, which led mechanically ü- via a drive, transport light from the water surface in the depth.
- Luminescent light carrier particles can also be passed through an external loop for charging the light.
- an artificial radiation source and only luminescent moldings in particular luminescent floating body can be used.
- the outdoor photobioreactor is equipped with facilities for filling nutrients and supplying CO 2 containing gases.
- Other devices are those for product separation, for example by means of pumps or rakes, and emptying.
- Suitable CO 2 sources are air, air enriched with CO 2, CO 2 -containing exhaust gas or pure CO 2.
- the CO 2 -containing gases for example air or CO 2 -containing exhaust air
- the CO 2 -containing gases are added from below into the open-air photobioreactor, distributed over the surface. Due to the higher, surface-saving design of the open-air photobioreactors, in the case of air introduced at the bottom, CO 2 -containing air or A longer gas residence time is set for the CO2 (the rate of ascent of the gas bubbles remains the same), which results in a significantly better CO2 enrichment or utilization.
- a deeper pool reduces or prevents the evaporation loss of water, which is particularly advantageous in low-water (arid) offshore regions of the earth.
- the combination of equipped with artificial radiation sources Freiluftphotobioreaktoren with plants for regenerative power generation is particularly preferred.
- the outdoor photobioreactors are supplied with decentralized, directly to the reactors, generated electricity from photovoltaic systems, wind turbines or tidal power plants.
- the combination with systems for day / night power storage is preferred, thereby reducing the dependence on direct sunlight.
- photovoltaic current is preferred, which is particularly preferably produced by high power solar cells supplied with sunlight supplied by Fresnel lenses up to more than 1000 times.
- the combination of outdoor photobioductors with offshore wind farms is used with a water depth of a few meters to a few 10 meters for installing the outdoor photobioreactors, and the masts of the wind turbines for the fixed points of the side walls and net-like strain of the LED molded parts and optical fibers or the films are used with integrated LEDs or optical fibers.
- the optimized constructive arrangement of a large number of LED moldings and / or light guides, evenly distributed over large open-air photobioreactors, for example algae farms, enables economical mass production of algae biomass.
- LED moldings a variety of LEDs can be summarized to reactor light fixtures, which thus enables optimal illumination of an algae farm and increase the area yield economically.
- the open-air photobioreactors can be used for autotrophic and heterotrophic mass production of algae biomass, as well as for
- the algae biomass produced in this way is suitable as an energy raw material, chemical raw material, foodstuff, and for use in cosmetic and medical applications.
- FIGS. 1 to 2 The invention is explained by way of example in FIGS. 1 to 2:
- FIG. 1 Freiluftphotobioreaktor, in the embodiment of a high-performance algae farm, with LED moldings and light guides with Fresnellinsenkopf in alternation, net-like spanned between pontoons as a high-performance photovoltaic module carrier and Energyspeieher.
- Figure 2 Freiluftphotobioreaktor, in the embodiment of a high-performance algae farm, with LED moldings and light guides with Fresnellinsenkopf in alternation, net-like spanned between the masts of an offshore wind farm as a generator carrier and energy storage.
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- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
L'invention concerne des photobioréacteurs extérieurs à sources de rayonnement artificielles, caractérisés en ce qu'on utilise comme sources de rayonnement un ou plusieurs éléments appartenant au groupe comprenant des pièces moulées équipées de DEL, des guides d'ondes optiques et des pièces moulées luminescentes, ces éléments étant placés à l'intérieur du réacteur.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007000815.7 | 2007-10-04 | ||
DE102007000815A DE102007000815A1 (de) | 2007-10-04 | 2007-10-04 | Freiluftphotobioreaktor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009043763A1 true WO2009043763A1 (fr) | 2009-04-09 |
Family
ID=40081505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/062713 WO2009043763A1 (fr) | 2007-10-04 | 2008-09-24 | Photobioréacteur extérieur |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102007000815A1 (fr) |
WO (1) | WO2009043763A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2391705A1 (fr) * | 2009-01-30 | 2011-12-07 | Zero Discharge PTY LTD | Procédé et appareil pour la culture d'algues et de cyanobactéries |
ITFI20110097A1 (it) * | 2011-05-09 | 2012-11-10 | Fotosintetica & Microbiologica S R L | Fotobioreattore fotovoltaico per la coltura di alghe. |
CN103184149A (zh) * | 2011-12-27 | 2013-07-03 | 新奥科技发展有限公司 | 用于光合生物培养的分光装置和光合生物培养装置 |
WO2014056617A1 (fr) * | 2012-10-11 | 2014-04-17 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Réacteur présentant des particules électroluminescentes dans un milieu réactionnel |
US9518248B2 (en) | 2010-11-15 | 2016-12-13 | Cornell University | Optofluidic photobioreactor apparatus, method, and applications |
WO2022195176A1 (fr) * | 2021-03-18 | 2022-09-22 | Sorbonne Université | Dispositif d'éclairage |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2945215B1 (fr) * | 2009-05-06 | 2011-08-19 | Fermentalg | Procede de traitement de l'air ambiant |
FR2954947B1 (fr) * | 2010-01-04 | 2012-01-20 | Acta Alga | Photobioreacteur en milieu ferme pour la culture de micro-organismes photosynthetiques |
DE102010004256A1 (de) * | 2010-01-09 | 2011-07-14 | Martin 15749 Hösl | Bioreaktor |
FR2974814B1 (fr) * | 2011-05-06 | 2017-06-02 | Acta Alga | Photobioreacteur en milieu ferme pour la culture de micro-organismes photosynthetiques |
EP3066186B1 (fr) * | 2013-11-08 | 2017-10-11 | Phytolutions GmbH | Photobioréacteur et parc de photobioréacteurs |
DE102017012350B3 (de) | 2017-01-18 | 2023-07-13 | Adolf Neuhaus | Einrichtung zum Filtern von Wasser und deren Verwendung |
DE102017100875B4 (de) | 2017-01-18 | 2020-11-12 | Adolf Neuhaus | Einrichtung zum Filtern von Wasser und deren Verwendung |
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JPH0445729A (ja) * | 1990-06-14 | 1992-02-14 | Mitsui Eng & Shipbuild Co Ltd | 海底植物育成装置 |
JP2000060533A (ja) * | 1998-08-20 | 2000-02-29 | Matsushita Electric Ind Co Ltd | 太陽光導光光学系を備えた培養槽とその使用方法 |
DE10322111A1 (de) * | 2003-05-10 | 2004-12-02 | Backhaus, Jan O., Prof. Dr. | Outdoor-Photobioreaktor |
WO2007047805A2 (fr) * | 2005-10-20 | 2007-04-26 | Saudi Arabian Oil Company | Systeme de neutralisation de carbone (cns) pour la sequestration de co2 |
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JPH0445729A (ja) * | 1990-06-14 | 1992-02-14 | Mitsui Eng & Shipbuild Co Ltd | 海底植物育成装置 |
JP2000060533A (ja) * | 1998-08-20 | 2000-02-29 | Matsushita Electric Ind Co Ltd | 太陽光導光光学系を備えた培養槽とその使用方法 |
DE10322111A1 (de) * | 2003-05-10 | 2004-12-02 | Backhaus, Jan O., Prof. Dr. | Outdoor-Photobioreaktor |
WO2007047805A2 (fr) * | 2005-10-20 | 2007-04-26 | Saudi Arabian Oil Company | Systeme de neutralisation de carbone (cns) pour la sequestration de co2 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2391705A1 (fr) * | 2009-01-30 | 2011-12-07 | Zero Discharge PTY LTD | Procédé et appareil pour la culture d'algues et de cyanobactéries |
EP2391705A4 (fr) * | 2009-01-30 | 2014-01-01 | Zero Discharge Pty Ltd | Procédé et appareil pour la culture d'algues et de cyanobactéries |
US9518248B2 (en) | 2010-11-15 | 2016-12-13 | Cornell University | Optofluidic photobioreactor apparatus, method, and applications |
US10604733B2 (en) | 2010-11-15 | 2020-03-31 | Cornell University | Optofluidic photobioreactor apparatus, method, and applications |
US11186812B2 (en) | 2010-11-15 | 2021-11-30 | Cornell University | Optofluidic photobioreactor apparatus, method, and applications |
ITFI20110097A1 (it) * | 2011-05-09 | 2012-11-10 | Fotosintetica & Microbiologica S R L | Fotobioreattore fotovoltaico per la coltura di alghe. |
CN103184149A (zh) * | 2011-12-27 | 2013-07-03 | 新奥科技发展有限公司 | 用于光合生物培养的分光装置和光合生物培养装置 |
CN103184149B (zh) * | 2011-12-27 | 2016-04-13 | 新奥科技发展有限公司 | 用于光合生物培养的分光装置和光合生物培养装置 |
WO2014056617A1 (fr) * | 2012-10-11 | 2014-04-17 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Réacteur présentant des particules électroluminescentes dans un milieu réactionnel |
US9566561B2 (en) | 2012-10-11 | 2017-02-14 | Friedrich-Alexander-Universitaet Erlange | Reactor having electroluminescent particles in the reaction medium |
WO2022195176A1 (fr) * | 2021-03-18 | 2022-09-22 | Sorbonne Université | Dispositif d'éclairage |
Also Published As
Publication number | Publication date |
---|---|
DE102007000815A1 (de) | 2009-04-09 |
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