Fludic oscillators for algae cultivation
Project goals
Gas microbubbles in liquids, smaller by an order of magnitude than currently possible, are to be generated. The small size enhances transport processes, in particular diffusion of CO2 to water - and to unicellular plants. The small microbubble size is achieved by fragmentation of bubbles during their formation by oscillating the gas inlet flow. Self-excited oscillation are generated without moving components due o the hydrodynamic instability in the inlet cavity — the oscillator, development and optimisation of which (towards higher effectiveness and small pressure losses) is seen as the main target. There are actually many applications (microflotation, protein separation, oxidising waste water, ...) – the project is directed towards increasing productivity of algae growth in bioreactors for bio-diesel production. The intensification of CO2 transport is simultaneously seen as a solution (partial at least) of the anthropogenic production of greenhouse gases.
Keywords
fluidicsoscillatorshydrodynamic instabilityself-excited oscillationfeedbackacousticsmicrobubble generationmass transferbubble fragmentationgas transport across phase interfacecarbon sequestrationunicellular plantsalgaebiofuels
Public support
Provider
Czech Science Foundation
Programme
Standard projects
Call for proposals
Standardní projekty 17 (SGA0201300005)
Main participants
Ústav termomechaniky AV ČR, v. v. i.
Contest type
VS - Public tender
Contract ID
13-23046S
Alternative language
Project name in Czech
FLUIDICKÉ OSCILÁTORY PRO PĚSTOVÁNÍ ŘAS
Annotation in Czech
Jde o generování mikrobublin plynu v kapalině zhruba o řád menších, než bylo dosud možné. To umožní intenzifikaci přestupu CO2 do vody a dále jednobuněčným rostlinám. Malý rozměr bublin je dosažen fragmentací tvořící se bubliny na výstupu z aerátoru účinkem oscilací v přívodu plynu. Samobuzené oscilace jsou důsledkem hydrodynamické nestability v dutině oscilátoru. Nejsou zde pohyblivé součástky. Vývoj a optimalizace oscilátorů směrem k vysoké účinnosti a malým tlakovým ztrátám je hlavním cílem prací. Využití je mnoho (mikroflotace, okysličení odpoadních vod, ...) v projektu jde o zvýšení výtěžnosti řas produkovaných v bioreaktorech pro výrobu biopaliv a případně současně jako řešení problému sntropogenních skleníkových plynů vytvářených při procesech spalování.
Scientific branches
R&D category
ZV - Basic research
CEP classification - main branch
BK - Liquid mechanics
CEP - secondary branch
EI - Biotechnology and bionics
CEP - another secondary branch
—
10305 - Fluids and plasma physics (including surface physics)
20801 - Environmental biotechnology
20802 - Bioremediation, diagnostic biotechnologies (DNA chips and biosensing devices) in environmental management
20803 - Environmental biotechnology related ethics
20901 - Industrial biotechnology
20902 - Bioprocessing technologies (industrial processes relying on biological agents to drive the process) biocatalysis, fermentation
20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials
30401 - Health-related biotechnology
30402 - Technologies involving the manipulation of cells, tissues, organs or the whole organism (assisted reproduction)
30403 - Technologies involving identifying the functioning of DNA, proteins and enzymes and how they influence the onset of disease and maintenance of well-being (gene-based diagnostics and therapeutic interventions [pharmacogenomics, gene-based therapeutics])
30404 - Biomaterials (as related to medical implants, devices, sensors)
30405 - Medical biotechnology related ethics
40401 - Agricultural biotechnology and food biotechnology
40402 - GM technology (crops and livestock), livestock cloning, marker assisted selection, diagnostics (DNA chips and biosensing devices for the early/accurate detection of diseases) biomass feedstock production technologies, biopharming
40403 - Agricultural biotechnology related ethics
Completed project evaluation
Provider evaluation
U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)
Project results evaluation
The technique for generation of gas microbubbles in a liquid, smaller approximately an order of magnitude than earlier generated bubbles, was developed. Principal aims of the project were fulfilled and the results can be used in practice. The budget drawing schedule was purposive. The project was solved on good scientific level with very high publication activity (including patents).
Solution timeline
Realization period - beginning
Feb 1, 2013
Realization period - end
Dec 31, 2016
Project status
U - Finished project
Latest support payment
Mar 17, 2016
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP17-GA0-GA-U/03:1
Data delivery date
Jun 28, 2017
Finance
Total approved costs
3,066 thou. CZK
Public financial support
3,066 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
0 thou. CZK
Basic information
Recognised costs
3 066 CZK thou.
Public support
3 066 CZK thou.
100%
Provider
Czech Science Foundation
CEP
BK - Liquid mechanics
Solution period
01. 02. 2013 - 31. 12. 2016