Optimization of eicosapentaenoic acid production by Phaeodactylum tricornutum in the flat panel airlift (FPA) reactor

Meiser, Andreas; Schmid‐Staiger, Ulrike; Trösch, Walter

doi:10.1023/b:japh.0000048507.95878.b5

Cited by 102 publications

(59 citation statements)

References 31 publications

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“…Secondary treatment effluent from activated sludge processes could serve as a good cultivation medium because it also contains high levels of carbonate, as well as nitrogen and phosphorus. However, nutrient contents in wastewater and treated wastewater are much lower than those in cultivation media that has typically been used in past studies of microalgae cultivation [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Honda

Teraoka

Noguchi

et al. 2017

J. of Wat. & Envir. Tech.

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Treated sewage is a promising source of nitrogen and phosphorus in microalgae biomass production for carbon-neutral biofuel and chemical products. In this study, Chlorella vulgaris was continuously cultivated in membrane photobioreactors (MPBRs) under short hydraulic retention times (HRTs) and with different numbers of submerged membrane modules to investigate potential microalgae productivity when treated sewage was used as a nutrient source. Microalgae biomass concentrations were independent of HRT in MPBRs with one membrane module owing to microalgae biomass deposition on the membrane. Installation of an additional submerged membrane module effectively reduced deposition on the submerged membrane, resulting in increased microalgae biomass concentration and volumetric productivity. Growth kinetics suggested that HRT is the essential parameter influencing the volumetric productivity of microalgae under nutrient-limited conditions, and that optimization of the biomass concentration, which depends on the surface/volume ratio of the photobioreactor and initial light intensity, is critical to maximization of the volumetric productivity under light-limited conditions.

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Section: Introductionmentioning

confidence: 99%

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Honda

Teraoka

Noguchi

et al. 2017

J. of Wat. & Envir. Tech.

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“…pattern, relatively high gas-liquid mass transfer rate, and low operating costs (Meiser et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Aeration and mass transfer optimization in a rectangular airlift loop photobioreactor for the production of microalgae

Guo

Yao

Huang

2015

Bioresource Technology

103

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“…Nevertheless, studies in short light path (SLP) panel PBRs showed that photosynthetic efficiency and productivity are improving with increase in turbulence or L/D cycling (Meiser et al, 2004;Qiang and Richmond, 1996), whereas the increase was greatest under incident light intensities which would be over-saturating if used as continuous illumination. Recent work in SLP PBRs with green microalgae and over-saturating incident light intensities showed that an increase in gassing rate (Zijffers, 2009) or stirrer speed (Kliphuis et al, 2010a) or a decrease of light path (Zijffers et al, 2010) did not result in an improved photosynthetic efficiency.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic efficiency of Chlamydomonas reinhardtii in flashing light

Vejrazka

Janssen

Streefland

et al. 2011

Biotech & Bioengineering

119

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Efficient light to biomass conversion in photobioreactors is crucial for economically feasible microalgae production processes. It has been suggested that photosynthesis is enhanced in short light path photobioreactors by mixing-induced flashing light regimes. In this study, photosynthetic efficiency and growth of the green microalga Chlamydomonas reinhardtii were measured using LED light to simulate light/dark cycles ranging from 5 to 100 Hz at a light-dark ratio of 0.1 and a flash intensity of 1000 µmol m(-2) s(-1). Light flashing at 100 Hz yielded the same photosynthetic efficiency and specific growth rate as cultivation under continuous illumination with the same time-averaged light intensity (i.e., 100 µmol m(-2) s(-1)). The efficiency and growth rate decreased with decreasing flash frequency. Even at 5 Hz flashing, the rate of linear electron transport during the flash was still 2.5 times higher than during maximal growth under continuous light, suggesting storage of reducing equivalents during the flash which are available during the dark period. In this way the dark reaction of photosynthesis can continue during the dark time of a light/dark cycle. Understanding photosynthetic growth in dynamic light regimes is crucial for model development to predict microalgal photobioreactor productivities.

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Optimization of eicosapentaenoic acid production by Phaeodactylum tricornutum in the flat panel airlift (FPA) reactor

Cited by 102 publications

References 31 publications

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Optimization of Hydraulic Retention Time and Biomass Concentration in Microalgae Biomass Production from Treated Sewage with a Membrane Photobioreactor

Aeration and mass transfer optimization in a rectangular airlift loop photobioreactor for the production of microalgae

Photosynthetic efficiency of Chlamydomonas reinhardtii in flashing light

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