WO2011026482A1 - Verfahren zum ernten von algen aus einer algensuspension - Google Patents
Verfahren zum ernten von algen aus einer algensuspension Download PDFInfo
- Publication number
- WO2011026482A1 WO2011026482A1 PCT/DE2010/001048 DE2010001048W WO2011026482A1 WO 2011026482 A1 WO2011026482 A1 WO 2011026482A1 DE 2010001048 W DE2010001048 W DE 2010001048W WO 2011026482 A1 WO2011026482 A1 WO 2011026482A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- algae
- suspension
- concentrate
- per liter
- dry matter
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G33/00—Cultivation of seaweed or algae
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/02—Separating microorganisms from their culture media
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/12—Unicellular algae; Culture media therefor
-
- 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
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
-
- 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
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
Definitions
- the invention discloses a method for harvesting algae from an algal suspension, in particular from a microalgae suspension, wherein a special type of concentration of the algal suspension takes place.
- Algae are considered to be one of the most promising microorganisms to bind or convert CO 2 .
- such algae are converted into an energetically high-quality product, in particular diesel fuel.
- the lipids are used, which are present in the algae.
- Other transformations, for example, in animal feed or cosmetics are known.
- algae are grown or grown in aqueous solutions, the algae must be separated from the aqueous solution.
- algae are also referred to as biomass.
- centrifuging is used as an established method. The liquid is separated from the solid components in a centrifuge.
- the object of the invention is to improve the state of the art.
- CONFIRMATION COPY [05] The object is achieved by a method for harvesting algae from an algal suspension, in particular from a microalgae suspension, wherein a concentration of the algal suspension is effected by means of a membrane filter, so that a first filtrate of a nutrient fluid and a first concentrate of an algal suspension is present. Thereby, a method can be provided in which the use of energy is reduced.
- Algae of the species referred to herein include aquatic or aquatic eukaryotic plant-like organisms which are photosynthesizing but which are not taxonomically associated with the plants, and prokaryotic cells such as blue-green algae (Cyanophycea) or blue-green algae.
- the algae included include, in particular, marine algae in lakes and oceans, as well as both freshwater and marine algae, in particular the following groups of algae or algae species: Haptophyta, Mouthworm (Cryptista), Dinozoa, Raphidophyceae, Chloe rarachniophyta, gold algae (Chrysophyta), diatoms (Bacillariophyta, also diatoms), brown algae (Thaeophyta), red algae (Rhodophyta), green algae and Ticobiliphyta, where the algae listed here are particularly preferably used in salt water, in particular the saline algae Nannochloropsis, Isochrysis, Phaeodactylum , Tetraselmis, Dunanie lla and / or spirulina and the freshwater algae Chlorella.
- the "algae suspension” may be designed so that there are optimized growth conditions for algae, such as artificially adding nutrients, such as C0 2 , to the algae suspension, or storing the algae suspension in bioreactors that have optimized growth conditions the bioreactors have a large surface exposed to sunlight, which promotes the growth of algae.
- the term “filtrate” refers in particular to the liquid component of the algal suspension without algae after the filtration process. In particular, this filtrate also contains the nutrients that the algae used to grow. Furthermore, this filtrate may have high quality substances which are produced by the algae. These high-quality substances include, in particular, polysaccharides. The nutrients and the aqueous components can form a nutrient fluid.
- concentrate is understood to mean the concentrated algae suspension up to the pure dry substance content of the algae suspension
- the concentrate may also contain nutrient liquid.
- filters are used as "membrane filters" in which the mass transport either via a solution diffusion model or via a hydrodynamic model, whereby both models can also occur in parallel.
- the transport essentially takes place by the diffusion, with the component to be transported being dissolved in the membrane.
- the hydrodynamic model which is preferably used, the mass transfer takes place purely convectively.
- control or regulation of harvesting takes place, wherein the algal suspension can be fed to the membrane filter as a setting process. Thus, the harvesting can be done depending on certain parameters.
- the harvest can be done automatically by the controller opening a valve located above the membrane filter so that the algal suspension is forced through the membrane filter by gravity.
- the algae suspension can be fed to the membrane filter via hoses, so that a pressure gradient is created which supports the filtering process.
- harmful algae from a lake or algae can thus be harvested from a photobioreactor.
- a control can alternatively or additionally to control done by sensor data are evaluated and the algae suspension via pumps and / or valves is fed to the membrane filter based on certain parameters.
- the membrane filter can be modular. Thus, several photobioreactors, each with a membrane filter can be operated via a controller or control for harvesting. Also, multiple membrane filters can be interconnected to "one" membrane filter, which can significantly reduce harvest time.
- the membrane filter may comprise a permeable membrane whereby the filtrate may pass through the permeable membrane and thus separate , wherein the concentrate does not overcome the membrane.
- the membrane filter can have a hollow-fiber membrane to exploit capillary forces.
- the hollow-fiber membrane may comprise perforated hollow glass fiber rods.
- the perforated glass fiber hollow rods can have a pore width of about 0.05 ⁇ .
- the concentration of the algae suspension can be carried out to a density between 4 g dry matter per liter and 400 g dry matter per liter, the density in particular between 10 g dry matter per liter and 250 g dry matter per liter or a value between 20 g Dry substance per liter and 80 g dry matter per liter.
- this concentrated algae suspension can be centrifuged so that a second filtrate from a nutrient fluid and a second nutrient concentrate from an algal suspension are present. Thus, then there is a biomass from the algae for further processing.
- the concentration can be up to a density of between 5 g dry matter per liter and 50 g dry matter per liter.
- the size and / or the number of membrane filters for the amount of algae harvested per time can be reduced.
- the concentration takes place to a density between 10 g dry matter per liter and 20 g dry matter per liter.
- a flocculant may be added to the first concentrate of algae suspension for the purpose of infiltrating the concentrate of the algae suspension.
- flocculation allows the removal of the finest suspended and collodially loosened, interfering water constituents, such as plankton, iron sludge or algae present in the water.
- the limit between suspended and collodially dispersed particles is approx 0.45 microns If the density of the fine particles is equal to that of the water, they can float and not sediment.
- a flocculent can destabilize the fine particles so that they no longer repel each other.
- Such flocculants may be aluminum or ferric salts. After destabilization, the fine particles may clump together, this part is also called coagulation. At the same time, however, flakes are also formed, in which the already coagulated flakes are bound in, and thereby made separable. This part is called flocculation. Flocculation may therefore include coagulation and flocculation.
- the pH value for flocculation can be adjusted.
- the pH may be between 5.5-7.5.
- aluminum salts in particular a pH of between 5.5 and 7.2 is preferred.
- organic flocculants such as chitosan or polyacrylates can be used.
- a sieving can be carried out by means of a sieve or a fine-pored tissue, in particular a gauze, so that a third filtrate from a nutrient fluid and a third concentrate from an algal suspension are present.
- the third filtrate described above can be reused and supplied to the algal suspension.
- the object is achieved by the first algae suspension concentrate which is present after carrying out the method described above.
- the object is achieved by the first nutrient liquid filtrate which is present after carrying out the method described above.
- the object is achieved by the second algae suspension concentrate which is present after carrying out the method described above.
- the object is achieved by the second nutrient liquid filtrate which is present after carrying out the method described above.
- the object is achieved by the third algae suspension concentrate which is present after carrying out the method described above.
- the object is achieved by the third nutrient liquid filtrate which is present after carrying out the method described above.
- FIG. 1 shows the flow of the inventive method with associated
- a microalgae suspension is present in a photobioreactor in a concentration of 1 to 2 g dry matter per liter or in an algae pool with a microalgae suspension in a concentration between about 0.2 to 0.5 g dry matter per liter.
- This microalgae suspension is concentrated by means of a membrane filter to a concentration of between 10 g dry matter per liter to 20 g dry matter per liter.
- the membrane filter of the type PURON TM from the company Kochmembran Systems (KMS) from Aachen is used.
- This PURON TM membrane filter consists of perforated Fieberglashohlstäben with a pore size of 0.05 ⁇ .
- the first filtrate Fl is returned to the photobioreactor or algae pool as reused filtrate Rl. This is indicated in FIG. 1 as step 6.
- the first concentrate Kl can either be centrifuged (not shown).
- a second filtrate of water, salts and nutrients and a second concentrate of a concentrated microalgae suspension is present.
- the second concentrate is free of water, salts or nutrients.
- the first concentrate Kl can be thickened with a flocculent 3.
- a flocculant preferably the flocculant brand NICASAL Sachtleben Wasserchemie GmbH used.
- the thickened algae are sieved by means of a gauze, which is characterized by step 4. Such a gauze is in particular a fine-pored fabric.
- a third filtrate F3 is present. This third filtrate comprises water, with dissolved salts or nutrients and is returned as nutrient liquid R3 to the photobioreactor 1 or the algae pool 1 7.
- the final algae biomass 5 has a dry matter content of between 10% and 30%. This algal biomass can then be used for the production of diesel fuel, cosmetics, animal food, dietary supplements, etc.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biochemistry (AREA)
- Virology (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- General Engineering & Computer Science (AREA)
- Tropical Medicine & Parasitology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Botany (AREA)
- Cell Biology (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010003565T DE112010003565A5 (de) | 2009-09-07 | 2010-09-07 | Verfahren zum ernten von algen aus einer algensuspension |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009039554A DE102009039554A1 (de) | 2009-09-07 | 2009-09-07 | Verfahren zum Ernten von Algen aus einer Algensuspension, erstes, zweites und drittes Algensuspensionskonzentrat sowie erstes, zweites und drittes Nährflüssigkeitsfiltrat |
DE102009039554.7 | 2009-09-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011026482A1 true WO2011026482A1 (de) | 2011-03-10 |
Family
ID=43416313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/001048 WO2011026482A1 (de) | 2009-09-07 | 2010-09-07 | Verfahren zum ernten von algen aus einer algensuspension |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102009039554A1 (de) |
WO (1) | WO2011026482A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102204455A (zh) * | 2011-06-10 | 2011-10-05 | 薛命雄 | 螺旋藻絮凝采收装置及采收方法 |
EP3090626A1 (de) * | 2015-05-08 | 2016-11-09 | Ökotec-Anlagenbau GmbH | Verfahren zur herstellung einer algenfrischmasse |
ES2621054A1 (es) * | 2015-12-30 | 2017-06-30 | Universitat De València | Métodos y sistemas para el cultivo y pre-cosechado de biomasa algal |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012216339B4 (de) | 2012-09-13 | 2017-09-07 | GICON-Großmann Ingenieur Consult GmbH | Verfahren zur Fest-Flüssigtrennung einer Suspension sowie die Verwendung eines selbstverbrauchenden Filters aus biologisch abbaubarem Material zur Fest-Flüssigtrennung von Suspensionen in diesem Verfahren |
CN107593419B (zh) * | 2017-10-31 | 2020-07-24 | 广西中医药大学 | 一种低盐度海葡萄的循环养殖法 |
CN113105991B (zh) * | 2021-03-15 | 2022-08-09 | 同济大学 | 一种微纳米气泡培养采收一体化微藻生物膜反应器及其微藻培养采收方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983001257A1 (en) * | 1981-10-07 | 1983-04-14 | Curtain, Cyril, Curtis | Method for harvesting algae |
DE202004010958U1 (de) * | 2004-07-13 | 2004-11-18 | A3 Abfall-Abwasser-Anlagentechnik Gmbh | Wasserfilter zur mechanischen Reinigung von Wasser |
GB2451235A (en) * | 2007-07-23 | 2009-01-28 | John Roy Munford | Harvesting of Biofuel algae feedstcock using tractive devices and fine net |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6022742A (en) * | 1986-11-26 | 2000-02-08 | Kopf; Henry B. | Culture device and method |
US4897185A (en) * | 1988-10-06 | 1990-01-30 | Cobe Laboratories, Inc. | Cell processing apparatus and method |
DE29611336U1 (de) * | 1996-06-28 | 1996-09-19 | Gesellschaft für Biotechnologische Forschung mbH (GBF), 38124 Braunschweig | Filtrationsvorrichtung |
ES2226850T3 (es) * | 1999-06-03 | 2005-04-01 | The University Of North Carolina At Chapel Hill | Diseño de biorreactor y procedimiento para preparar tejido a partir de celulas. |
US6416668B1 (en) * | 1999-09-01 | 2002-07-09 | Riad A. Al-Samadi | Water treatment process for membranes |
DE10242078A1 (de) * | 2002-09-09 | 2004-03-18 | Saxonia Bio Tec Gmbh | Faserkassette und modular aufgebautes Kassettensystem |
-
2009
- 2009-09-07 DE DE102009039554A patent/DE102009039554A1/de not_active Withdrawn
-
2010
- 2010-09-07 WO PCT/DE2010/001048 patent/WO2011026482A1/de active Application Filing
- 2010-09-07 DE DE112010003565T patent/DE112010003565A5/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983001257A1 (en) * | 1981-10-07 | 1983-04-14 | Curtain, Cyril, Curtis | Method for harvesting algae |
DE202004010958U1 (de) * | 2004-07-13 | 2004-11-18 | A3 Abfall-Abwasser-Anlagentechnik Gmbh | Wasserfilter zur mechanischen Reinigung von Wasser |
GB2451235A (en) * | 2007-07-23 | 2009-01-28 | John Roy Munford | Harvesting of Biofuel algae feedstcock using tractive devices and fine net |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102204455A (zh) * | 2011-06-10 | 2011-10-05 | 薛命雄 | 螺旋藻絮凝采收装置及采收方法 |
EP3090626A1 (de) * | 2015-05-08 | 2016-11-09 | Ökotec-Anlagenbau GmbH | Verfahren zur herstellung einer algenfrischmasse |
ES2621054A1 (es) * | 2015-12-30 | 2017-06-30 | Universitat De València | Métodos y sistemas para el cultivo y pre-cosechado de biomasa algal |
WO2017114989A1 (es) * | 2015-12-30 | 2017-07-06 | Universitat De València | Métodos y sistemas para el cultivo y pre-cosechado de biomasa algal en dos etapas |
Also Published As
Publication number | Publication date |
---|---|
DE112010003565A5 (de) | 2012-08-16 |
DE102009039554A1 (de) | 2011-03-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Liao et al. | A review of membrane fouling and its control in algal-related membrane processes | |
WO2011026482A1 (de) | Verfahren zum ernten von algen aus einer algensuspension | |
Zou et al. | Direct microscopic observation of forward osmosis membrane fouling by microalgae: Critical flux and the role of operational conditions | |
Elcik et al. | The fouling effects of microalgal cells on crossflow membrane filtration | |
Babel et al. | Chemical pretreatment for reduction of membrane fouling caused by algae | |
Kanchanatip et al. | Fouling characterization and control for harvesting microalgae Arthrospira (Spirulina) maxima using a submerged, disc-type ultrafiltration membrane | |
DE102006014648B3 (de) | Reaktoranlage und Verfahren zur Kultivierung phototropher Mikroorganismen | |
DE68914412T2 (de) | Methode, System und Apparat zur Züchtung von Zellen. | |
US10006001B2 (en) | Methods and compositions to aggregate algae | |
WO2010120992A1 (en) | Method of separation of algal biomass from aqueous or marine culture | |
Singh et al. | Harvesting of microalgal biomass | |
Baharuddin et al. | Marine microalgae flocculation using plant: the case of Nannochloropsis oculata and Moringa oleifera | |
Rossi et al. | Arthrospira platensis harvesting with membranes: fouling phenomenon with limiting and critical flux | |
EP2796051B1 (de) | Quarkgrundmasse mit verbesserten Geschmackseigenschaften | |
Zhang et al. | Harvesting of Isochrysis zhanjiangensis using ultrafiltration: Changes in the contribution ratios of cells and algogenic organic matter to membrane fouling under different cross-flow velocities | |
DE3241315T1 (de) | Verfahren und Vorrichtung zum hochwirksamen Ultrafiltrieren komplexer fließfähiger Medien | |
Sun et al. | New insight in algal cell adhesion and cake layer evolution in algal-related membrane processes: Size-fractioned particles, initial foulant seeds and EDEM simulation | |
JP5879799B2 (ja) | 微細藻類の分離方法及び分離システム | |
DE2300127B2 (de) | Verfahren und vorrichtung zum gewinnen von unverduenntem oder wenig verduenntem fruchtwasser und von staerke aus hackfruechten | |
CN104313105B (zh) | 一种利用苏氨酸发酵液及废母液制备65%苏氨酸的方法 | |
CN102838624A (zh) | 一种从发酵液中纯化克拉维酸的方法 | |
Khademi | Application of Tubular Crossflow Microfiltration in Harvesting Microalgae | |
JP2018093766A (ja) | 塩分を含有する培養液で培養されたオーランチオキトリウム属に属する微細藻類の脱塩乾燥製品の製造方法 | |
WO2012067674A1 (en) | Methods and compositions to aggregate algae | |
US9266973B2 (en) | Systems and methods for utilizing and recovering chitosan to process biological material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10781584 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112010003565 Country of ref document: DE Ref document number: 1120100035652 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R225 Ref document number: 112010003565 Country of ref document: DE Effective date: 20120816 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10781584 Country of ref document: EP Kind code of ref document: A1 |