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Microalgal triacylglycerides production in outdoor batch-operated tubular PBRs

Overview of attention for article published in Biotechnology for Biofuels and Bioproducts, July 2015
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Title
Microalgal triacylglycerides production in outdoor batch-operated tubular PBRs
Published in
Biotechnology for Biofuels and Bioproducts, July 2015
DOI 10.1186/s13068-015-0283-2
Pubmed ID
Authors

Giulia Benvenuti, Rouke Bosma, Anne J Klok, Fang Ji, Packo P Lamers, Maria J Barbosa, René H Wijffels

Abstract

Microalgal triacylglycerides (TAGs) are a promising sustainable feedstock for the biofuel, chemical and food industry. However, industrial production of microalgal products for commodity markets is not yet economically viable, largely because of low microalgal productivity. The latter is strictly dependent on initial-biomass-specific (IBS) light availability (i.e. ratio of light impinging on reactor ground area divided by initial biomass concentration per ground area). This study investigates the effect of IBS-light availability on batch TAG production for Nannochloropsis sp. cultivated in two outdoor tubular reactors (i.e. vertical and horizontal) at different initial biomass concentrations for the TAG accumulation phase, during two distinct seasons (i.e. high and low light conditions). Increasing IBS-light availability led to both a higher IBS-TAG production rate and TAG content at the end of the batch, whereas biomass yield on light decreased. As a result, an optimum IBS-light availability was determined for the TAG productivity obtained at the end of the batch and several guidelines could be established. The vertical reactor (VR) should be operated at an initial biomass concentration of 1.5 g L(-1) to achieve high TAG productivities (1.9 and 3.2 g m(-2) day(-1) under low and high light, respectively). Instead, the horizontal reactor (HR) should be operated at 2.5 g L(-1) under high light (2.6 g m(-2) day(-1)), and at 1.5 g L(-1) under low light (1.4 g m(-2) day(-1)). From this study, the great importance of IBS-light availability on TAG production can be deduced. Although maintaining high light availabilities in the reactor is key to reach high TAG contents at the end of the batch, considerable losses in TAG productivity were observed for the two reactors regardless of light condition, when not operated at optimal initial biomass concentrations (15-40% for VR and 30-60% for HR).

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 56 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
India 1 2%
Austria 1 2%
Brazil 1 2%
Unknown 53 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 16 29%
Researcher 13 23%
Student > Master 8 14%
Student > Doctoral Student 3 5%
Student > Bachelor 3 5%
Other 7 13%
Unknown 6 11%
Readers by discipline Count As %
Agricultural and Biological Sciences 19 34%
Biochemistry, Genetics and Molecular Biology 8 14%
Environmental Science 6 11%
Engineering 3 5%
Chemical Engineering 2 4%
Other 6 11%
Unknown 12 21%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 July 2015.
All research outputs
#20,656,820
of 25,374,647 outputs
Outputs from Biotechnology for Biofuels and Bioproducts
#1,285
of 1,578 outputs
Outputs of similar age
#202,279
of 276,538 outputs
Outputs of similar age from Biotechnology for Biofuels and Bioproducts
#24
of 31 outputs
Altmetric has tracked 25,374,647 research outputs across all sources so far. This one is in the 10th percentile – i.e., 10% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,578 research outputs from this source. They receive a mean Attention Score of 4.9. This one is in the 10th percentile – i.e., 10% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 276,538 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 14th percentile – i.e., 14% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 31 others from the same source and published within six weeks on either side of this one. This one is in the 12th percentile – i.e., 12% of its contemporaries scored the same or lower than it.