Optimization of microalgae-sourced lipids production for biodiesel in a top-lit gas-lift bioreactor using response surface methodology

Hosseini, Nekoo Seyed; Shang, Helen; Scott, John A.

doi:10.1016/j.energy.2017.08.085

Cited by 28 publications

(7 citation statements)

References 42 publications

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“…The photobioreactor system is equipped with a suction and force pump (5), quantum immersion sensor for measuring photosynthetic radiation PAR (6), temperature sensor (7), CO 2 feeding system, and the introduction of other process gases (8). Moreover, the entire photobioreactor system also includes a biomass pickup system (9), UV measurement and disinfection unit of the filtrate (10), nutrient solution and inoculum (11), and heating-cooling system (12).…”

Section: Construction Of the Systemmentioning

confidence: 99%

“…As a result, algae can be grown in specially prepared vessels or photobioreactors. This arrangement not only allows for year-round breeding of algae, but also for the adjustment of conditions such as, e.g., light wavelength [11] or light intensity, or even vessel geometry [12], in search for the optimal growth rate. Moreover, industrial photobioreactors must also allow for practical removal of algal matter without interrupting their operation.…”

Section: Introductionmentioning

confidence: 99%

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The Follow-up Photobioreactor Illumination System for the Cultivation of Photosynthetic Microorganisms

et al. 2020

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The article presents the basic conceptual assumptions of a photobioreactor with a complementary lighting system. The cylindrical bioreactor has three independent, interconnected, and fully controlled lighting systems. A characteristic feature is the combination of the lighting system with the measurement of photosynthetically active PAR (photosynthetically active radiation) and the optical density of the culture medium. The entire lighting system is based on RGBW (“red, green, blue, white”) LED and RBG (“red, green, blue”) LEDs. The pilot study was conducted on a simplified prototype of a photobioreactor designed for the distribution and optimization of light in algae cultures designed for energy purposes. The study was carried out on microalgae Chlorella Vulgaris BA0002a from the collection of marine algae cultures.

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Section: Construction Of the Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Follow-up Photobioreactor Illumination System for the Cultivation of Photosynthetic Microorganisms

et al. 2020

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“…[37][38][39][40][41][42] Several studies investigated the impact of cultivation parameters on microalgal LP via RSM. [43][44][45][46] However, the length of photoperiod was not considered as a factor in these studies. Also, different microalgae species were used other than Chlorella kessleri sp.…”

Section: Introductionmentioning

confidence: 99%

“…Response surface methodology (RSM) is commonly used in various applications for experimental design, evaluation of variables, and optimization of different parameters to produce best possible responses 37‐42 . Several studies investigated the impact of cultivation parameters on microalgal LP via RSM 43‐46 . However, the length of photoperiod was not considered as a factor in these studies.…”

Section: Introductionmentioning

confidence: 99%

Optimization of microalgal biomass and lipid productivities for bioenergy production using central composite design with desirability function

Hossain

Sultana

Hossain

et al. 2021

Intl J of Energy Research

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This study investigates the influences of light-dark cycles and NaNO 3 dose on Chlorella kessleri microalgal-specific growth rate (SGR), biomass productivity (P), and intracellular lipid productivity (LP) by using central composite design with desirability function. A single-objective optimization showed that the maximum SGR, P, and LP can be achieved as 0.487 day −1 , 58.718 g/L day −1 , and 14.252 mg/L day −1 , respectively. The corresponding optimized light-dark cycle and NaNO 3 loading were determined as 11.6/8.4 (h/h) and 15.54 g/L, 12/12 (h/h) and 16.23 g/L, and 12/12 (h/h) and 6.63 g/L, respectively. The multiresponse optimization showed that the highest SGR of 0.359 day −1 , biomass productivity of 50.663 g/L day −1 and LP of 14.114 mg/L day −1 can be accomplished at culture environments of 12/12 (h/h) light-dark cycles and 10.38 g/L NaNO 3 . These results suggest that the central composite design with desirability function-based technique is useful for design and operation of photobioreactors to produce lipid from microalgae. Analysis of variance was employed to explore the significance of the factors affecting microalgal growth as well as biomass and lipid productivities. The predicted optimized culture conditions were experimentally confirmed (error < 6%) indicating the process is robust and reliable.

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“…The high productivity of good-quality algae and their optimal growth rate depends on a number of factors [22]. The most important factors are the distribution and availability of light with the appropriate wavelength [23] and intensity and the temperature and geometry of the vessels [24].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Artificial Lighting Systems on the Cultivation of Algae: The Example of Chlorella vulgaris

Brzychczyk¹,

Hebda²,

Pedryc³

2020

Energies

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Microalgae are a practical source of biological compounds for biodiesel production. This study examined the influence of three different light-emitting diode (LED) systems on the biomass production of green algae Chlorella vulgaris BA0002a. The cultivation was carried out in a photobioreactor illuminated from the bottom with a single side light jacket (PBR I), in a photobioreactor illuminated from the bottom with a double side light jacket (PBR II) and in a photobioreactor illuminated only from the top (PBR III). Research has shown that the intensification of algae cell production and growth depends on the light distribution and exposure time of a single cell to radiation. In the experiment, the highest growth of algae cells was obtained in the photobioreactor with double jacket and lower light panel. The lowest cell growth was observed in the photobioreactor illuminated only from above. For cultures raised in the PBR I and PBR II photobioreactors, increased oxygen production was observed, which was directly related to the increased production of biomass, which in turn was dependent on the increased amount of radiant energy.

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Optimization of microalgae-sourced lipids production for biodiesel in a top-lit gas-lift bioreactor using response surface methodology

Cited by 28 publications

References 42 publications

The Follow-up Photobioreactor Illumination System for the Cultivation of Photosynthetic Microorganisms

The Follow-up Photobioreactor Illumination System for the Cultivation of Photosynthetic Microorganisms

Optimization of microalgal biomass and lipid productivities for bioenergy production using central composite design with desirability function

The Influence of Artificial Lighting Systems on the Cultivation of Algae: The Example of Chlorella vulgaris

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