Use of waste carbon dioxide and pre-treated liquid digestate from biogas process for Phaeodactylum tricornutum cultivation in photobioreactors and open ponds

Simonazzi, Mara; Pezzolesi, Laura; Guerrini, Franca; Vanucci, Silvana; Samorì, Chiara; Pistocchi, Rossella

doi:10.1016/j.biortech.2019.121921

Cited by 16 publications

(3 citation statements)

References 48 publications

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“…In the present study, although P. tricornutum was cultivated at a lower average light intensity of 9.58 mol m −2 d −1 , the average biomass productivity was similar to their results obtained at 20 mol m −2 d −1 (158.47 mg L −1 d −1 at 0.4 g L −1 , and 98.14 mg L −1 d −1 at 1.1 g L −1 ; Table 1). Moreover, lower biomass productivities (29–79 mg L −1 d −1 ) were reported when cultivated in 270 vertical prototype‐outdoor column PBRs (270 L, column height 220 cm, diameter 55 cm), at semi‐continuous mode in January and February in Italy (Simonazzi et al, 2019). Higher biomass productivity, 1400 mg L −1 d −1 , was achieved in southern latitudes in Spain, with higher mean daily irradiance (1100 μmol m −2 s −1 ; Acién Fernández et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Production and monitoring of biomass and fucoxanthin with brown microalgae under outdoor conditions

Gao

Sá

Itd

et al. 2020

Biotech & Bioengineering

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The effect of light on biomass and fucoxanthin (Fx) productivities was studied in two microalgae, Tisochrysis lutea and Phaeodactylum tricornutum. High and low biomass concentrations (1.1 and 0.4 g L−1) were tested in outdoor pilot‐scale flat‐panel photobioreactors at semi‐continuous cultivation mode. Fluorescence spectroscopy coupled with chemometric modeling was used to develop prediction models for Fx content and for biomass concentration to be applied for both microalgae species. Prediction models showed high R2 for cell concentration (.93) and Fx content (.77). Biomass productivity was lower for high biomass concentration than low biomass concentration, for both microalgae (1.1 g L−1: 75.66 and 98.14 mg L−1 d−1, for T. lutea and P. tricornutum, respectively; 0.4 g L−1: 129.9 and 158.47 mg L−1 d−1, T. lutea and P. tricornutum). The same trend was observed in Fx productivity (1.1 g L−1: 1.14 and 1.41 mg L−1 d−1, T. lutea and P. tricornutum; 0.4 g L−1: 2.09 and 1.73 mg L−1 d−1, T. lutea and P. tricornutum). These results show that biomass and Fx productivities can be set by controlling biomass concentration under outdoor conditions and can be predicted using fluorescence spectroscopy. This monitoring tool opens new possibilities for online process control and optimization.

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Section: Resultsmentioning

confidence: 99%

Production and monitoring of biomass and fucoxanthin with brown microalgae under outdoor conditions

Gao

Sá

Itd

et al. 2020

Biotech & Bioengineering

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“…To our knowledge, this is the first successful attempt of high-density cultivation. Previous studies at this scale conducted cultivation at a much lower density (i.e., dry weight below 1 g L −1 ) (Fernandes et al, 2020;Hajar et al, 2017;Simonazzi et al, 2019). The productivity of the cultures (0.8 and 0.93 g L −1 d −1 ), approached a maximum expectation of 1 g L −1 d −1 , as defined by the daily supply of PLD and nutrients.…”

Section: Upscaling Of the Microalgae Cultivation In A Thin-layer Photobioreactormentioning

confidence: 94%

Cultivation of microalgae at high-density with pretreated liquid digestate as a nitrogen source: Fate of nitrogen and improvements on growth limitations

Pulgarin

Kapeller

Tarik

et al. 2021

Journal of Cleaner Production

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A liquid digestate rich in ammonium nitrogen (8.3 g L −1 ) was collected from an agricultural biogas plant and supplied to microalgae cultures as their only nitrogen source. Chlorella vulgaris was cultivated for up to 21 days, both under controlled conditions in laboratory-scale glass-column photobioreactors as well as outdoors in an open pilot-scale thin-layer photobioreactor. By systematically addressing issues associated with the use of liquid digestate (i.e., turbidity, nutrient imbalance, ammonium toxicity, and acidification), microalgae were robustly cultivated at a high density and cultures achieved a net biomass dry weight of between 10 and 14 g L −1 , and a productivity of up to 0.93 g L −1 d −1 (93% of maximum expectation). Cultivation in the thin-layer photobioreactor achieved areal productivities between 7 and 10 g m −2 d −1 . Water acidification due to the uptake of ammonium by microalgae was prevented by a controlled addition of NaOH. A detailed mass balance showed that, despite high removal efficiencies (approximately 3% of the supplied nitrogen remained in the medium), microalgae assimilated only 40-60% of the supplied nitrogen and, consequently, a large amount of nitrogen was lost to the atmosphere.

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“…Fish oil (FO) has a high content of DHA and EPA mainly esterified to triacylglycerols, while these fatty acids are mainly esterified to phospholipids in krill oil (KO) extracted from Antarctic krill (Euphausia superba) 9,10) . In addition, KO also contains astaxanthin, which is a potent antioxidant that might enhance the stability of n-3 LCPUFAs in the oil and thereby yield lipid content, Phaeodactylum tricornutum (P. tricornutum) is rich in Fx and n-3 LCPUFAs, particularly EPA 17,18) . In P. tricornutum, Fx level is at least 10 times higher than that in macroalga 19) .…”

Section: Introductionmentioning

confidence: 99%

Characterization and Antioxidant Evaluation of Four Kinds of Marine Oils <i>in vitro</i>

Lü

et al. 2023

J. Oleo Sci.

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preventing lipid peroxidation 11,12) .Aquatic plants including seaweeds and microalgae contain various natural antioxidants such as polyphenols, carotenoids, fucoxanthin (Fx) and fucosterol, which play an essential role in preventing lipid peroxidation 13) . Laminaria japonica, a common edible brown seaweed, prossesses various active ingredients such as organic iodine, alginates, laminarin, fucoidan and fucoxanthin 14,15) . The lipid content of Laminaria japonica (L. japonica oil, LO) is generally low, but it contains high level of EPA and arachidonic acid 16) . As a marine diatom with fast growth rate and high

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Use of waste carbon dioxide and pre-treated liquid digestate from biogas process for Phaeodactylum tricornutum cultivation in photobioreactors and open ponds

Cited by 16 publications

References 48 publications

Production and monitoring of biomass and fucoxanthin with brown microalgae under outdoor conditions

Production and monitoring of biomass and fucoxanthin with brown microalgae under outdoor conditions

Cultivation of microalgae at high-density with pretreated liquid digestate as a nitrogen source: Fate of nitrogen and improvements on growth limitations

Characterization and Antioxidant Evaluation of Four Kinds of Marine Oils <i>in vitro</i>

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