Name: optimize flue gas settings to promote microalgae growth in photobioreactors via computer simulations
Uploaded: 2013-10-01T09:00:00
Description: Watch this Scientific Journal Video about Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations at JoVE.com

Denne undersøgelse understøttes af en NSF program (Forskning Oplevelser for bachelorstuderende) ved Washington University i St. Louis.

1.. Alge Dyrkning og Scale-up <ol><li> Forbered dyrkningsmediet ved hjælp af deioniseret vand indeholdende 0,55 g / L -1 urea, 0,1185 g / L -1 KH 2 PO 4, 0,102 g / L -1 MgSO4 · 7H 2 O, 0,015 g / L -1 FeSO4 · 7H 2 O og 22,5 mikroelementer ul (18,5 g / L -1 H 3 BO 3, 21,0 g / L -1 CuSO4 · 5H 2 O, 73,2 g / L -1 MnCI2 · 4H...

<ol>
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I denne undersøgelse viser vi forsøgsprotokollen for opskalering alge dyrkninger i fotobioreaktorer. Vi undersøger også flere metoder til røggasrensning indgange til at fremme algevækst. Ved hjælp af en masse overførsel og bio-reaktion model, vi vise, at CO 2 masseoverføringskoefficient K La (bestemt af bioreaktor blande tilstand og CO 2 overfladisk hastighed) stor indflydelse algevækst. Modellen simulering viser kontinuerlig on-off røggas pulser med kort puls bredde og høje o...

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			<td height="21" style="height:21px;width:212px;">Spectrophotometer</td>
			<td style="width:212px;">Thermal Scientific, Texas USA</td>
			<td style="width:212px;"> </td>
		</tr>
		<tr height="39">
			<td height="39" style="height:39px;width:212px;">CO2 gas analyzer</td>
			<td style="width:212px;">LI-COR, Biosciences, Nebraska USA</td>
			<td style="width:212px;"> </td>
		</tr>
		<tr height="39">
			<td height="39" style="height:39px;width:212px;">Mass flow controllers</td>
			<td style="width:212px;">OMEGA Engineering INC, Connecticut USA</td>
			<td style="width:212px;">FMA5416</td>
		</tr>
		<tr height="58">
			<td height="58" style="height:58px;width:212px;">Data acquisition card</td>
			<td style="width:212px;">Measurement Computing Corporation, Massachusetts USA</td>
			<td style="width:212px;">USB-1208FS</td>
		</tr>
		<tr height="39">
			<td height="39" style="height:39px;width:212px;">Filters</td>
			<td style="width:212px;">Aerocolloid LLC, Minnesota USA</td>
			<td style="width:212px;"> </td>
		</tr>
		<tr height="39">
			<td height="39" style="height:39px;width:212px;">MATLAB/Simulink</td>
			<td style="width:212px;">Mathworks, Massachusetts USA</td>
			<td style="width:212px;">R2010a</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:212px;">Glass bottles</td>
			<td style="width:212px;">Fisher USA</td>
			<td style="width:212px;"> </td>
		</tr>
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optimize flue gas settings to promote microalgae growth in photobioreactors via computer simulations

Røggas fra kraftværker kan fremme alge dyrkning og reducere udledningen af drivhusgasser 1. Mikroalger ikke kun fange solenergi mere effektivt end planter 3, men også syntetisere avancerede biobrændstoffer 2-4. Generelt atmosfærisk CO 2 er ikke en tilstrækkelig kilde til at understøtte maksimal algevækst 5.. På den anden side, de høje koncentrationer af CO 2 i industrielle udstødningsgasser have negative virkninger på algevækst fysiologi. Derfor både dyrkningsforhold (såsom næringsstoffer og lys) og kontrol af røggasmængden ind i foto-bioreaktorer er vigtigt at udvikle en effektiv &quot;røggas for alger&quot; system. Forskere har foreslået forskellige photobioreactor konfigurationer 4,6 og dyrkningsmetoder strategier 7,8 med røggas. Her præsenterer vi en protokol, der demonstrerer, hvordan man bruger modeller til at forudsige mikroalger vækst som svar på flue indstillinger gas. Vi perfOrm såvel eksperimentelle illustration og modelsimuleringer at bestemme de gunstige betingelser for algevækst med røggas. Vi udvikler en Monod-baserede model kombineret med massetransport og lysintensitet ligninger til at simulere mikroalger vækst i et homogent foto-bioreaktor. Modellen simulering sammenligner algernes vækst og røggas forbrug under forskellige indstillinger flue-gas. Modellen illustrerer: 1) hvordan algevækst er påvirket af forskellige volumetriske masse transfer koefficienter af CO 2, 2) hvordan vi kan finde en optimal CO 2 koncentration for algevækst via dynamisk optimering tilgang (DOA), 3) hvordan vi kan designe en rektangulære on-off røggas puls til fremme algebiomasse vækst og for at reducere brugen af ​​røggassen. På den eksperimentelle side, præsenterer vi en protokol for dyrkning Chlorella under røggassen (genereret af naturgas forbrænding). De eksperimentelle resultater kvalitativt validere modellens forudsigelser, at den høje frekvens røggas puLSES kan forbedre alge dyrkning.

Vores tidligere eksperimentel analyse viser, at kontinuerlig røggas eksponering negativt påvirker væksten Chlorella, mens faldende CO 2 eksponeringstid er i stand til at afhjælpe denne hæmning 13. For bedre at forstå røggassen tilstrømning og algevækst forhold, udvikler vi en empirisk model til at simulere biomassevækst i tilstedeværelse af røggas. Vi antager, at røggassen indeholder 15% CO 2 (note: Den typiske CO 2-koncentration fra forbrænding af kul e...

Watch this Scientific Journal Video about Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations at JoVE.com

Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations

Røggas fra kraftværker er en billig CO2 kilde til algevækst. Vi har bygget prototype &quot;røggas til algernes dyrkningssystemer&quot; systemer og beskrev, hvordan at skalere op den alge dyrkning processen. Vi har vist, at anvendelse af en masse-overførsel bio-reaktionen model for at simulere og at udforme den optimale drift af røggas for væksten af Chlorella sp. i algernes foto-bioreaktorer.

Optimer Røggas indstillinger for at fremme mikroalger Vækst i fotobioreaktorer via computersimuleringer

Flue gas from power plants can promote algal cultivation and reduce greenhouse gas emissions1. Microalgae not only capture solar energy more efficiently ...

Research

JoVE Journal

Environment

Analysis of Fatty Acid Content and Composition in Microalgae

Analyse af Fatty Acid indhold og sammensætning i mikroalger

A method to determine the content and composition of total fatty acids present in microalgae is described. Fatty acids are a major constituent of ...

Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers

Måling af Greenhouse Gas Flux fra landbrugsjorde Brug Static Chambers

Measurement of greenhouse gas (GHG) fluxes between the soil and the atmosphere, in both managed and unmanaged ecosystems, is critical to understanding the ...

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Kvantificering af tungmetaller og andre uorganiske forureninger på produktivitet mikroalger

Increasing demand for renewable fuels has researchers investigating the feasibility of alternative feedstocks, such as microalgae. Inherent advantages ...

Procedures of Laboratory Fumigation for Pest Control with Nitric Oxide Gas

Procedurer for laboratoriet gasning for skadedyrsbekæmpelse med nitrogenoxid Gas

Nitric oxide (NO) is a newly discovered fumigant for postharvest pest control. This paper provides detailed protocols for conducting NO fumigation on ...

Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure

Lab-skala Model til at vurdere lugt og koncentrationerne udsendes af dyb sengs Pack gødning

A lab-scaled simulated bedded pack model was developed to study air quality and nutrient composition of deep-bedded packs used in cattle mono-slope ...

Experimental Study of the Relationship Between Particle Size and Methane Sorption Capacity in Shale

Eksperimentel undersøgelse af forholdet mellem partikelstørrelse og metan Sorption kapacitet i skifer

The amount of adsorbed shale gas is a key parameter used in shale gas resource evaluation and target area selection, and it is also an important standard ...

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

En optimeret Rhizobox protokol til at visualisere rodvækst og lydhørhed over for lokaliserede næringsstoffer

Roots are notoriously difficult to study. Soil is both a visual and mechanical barrier, making it difficult to track roots in situ without destructive ...

Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions

Sammensætning og Distribution analyse af Bioaerosols Under forskellige miljøforhold

Variable microorganisms in particulate matter (PM) under different environmental conditions may have significant impacts on human health. In this study, ...

Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids

Dyrkning af grøn mikroalger i boble kolonne Photobioreactors og en analyse for Neutral lipider

There is significant interest in the study of microalgae for engineering applications such as the production of biofuels, high value products, and for the ...

Microalgae Cultivation and Biomass Quantification in a Bench-Scale Photobioreactor with Corrosive Flue Gases

Mikroalger dyrkning og biomasse kvantificering i en bænk skala Fotobioreaktor med ætsende røggasser

Photobioreactors are illuminated cultivation systems for experiments on phototrophic microorganisms. These systems provide a sterile environment for ...