Growth modeling of the green microalga Chlorella vulgaris in an air-lift photobioreactor

Filali, Rayen; Tebbani, Sihem; Dumur, Didier; Isambert, Arsène; Pareau, Dominique; Lopes, Filipa

doi:10.3182/20110828-6-it-1002.01955

Cited by 24 publications

(22 citation statements)

References 16 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19 The degrees of freedom used in the experimental design and their corresponding levels are summarized in Table 1. As a two-level Placket-Burman design imposes a fixed number of degrees of freedom (11), three dummy variables had to be included in the experimental setup. Eventually 24 experiments were executed, each under different conditions ( Table 1).…”

Section: Methodsmentioning

confidence: 99%

“…So far, few model implementations include the simultaneous effect of the factors mentioned above, although some models are based on co‐limitation. For example, co‐limitation by light intensity and inorganic carbon, co‐limitation by nitrogen and phosphorus and co‐limitation by light and temperature have been reported. Future model development taking into account multi‐factor effects mimicks more closely the natural system and therefore warrants better prediction of the system.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The use of a combined respirometric–titrimetric setup to assess the effect of environmental conditions on micro‐algal growth rate

Decostere

Hulle

Duyck

et al. 2014

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Owing to their complexity a lot of research is performed on micro‐algal systems for wastewater treatment. In this work a previously developed combined respirometric–titrimetric approach was used for the determination of micro‐algal kinetics. A Plackett–Burman design with fold‐over was executed to investigate the influence of eight different degrees of freedom regarding environmental conditions on five different aspects (or responses) related to the micro‐algal photosynthetic activity. RESULTS Results revealed correlation between micro‐algal biomass concentration and both oxygen production rate and proton addition rate. When ammonium limiting conditions were implemented (molar N/P ratio = 7/1), a decrease of the titrimetric profile was observed. Regarding light intensity and temperature, no limitation was observed. Furthermore, with respect to inorganic phosphorus, no limitation was observed. CONCLUSIONS Although expected based on the literature, limitation was not observed for light intensity, temperature, and inorganic phosphorus, indicating that these state conditions were not limiting in the ranges applied in this research. Overall it can be concluded that the combined respirometric–titrimetric approach is successful for determination of limiting and non‐limiting components of wastewater nutrients and environmental conditions for micro‐algal growth. © 2014 Society of Chemical Industry

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The use of a combined respirometric–titrimetric setup to assess the effect of environmental conditions on micro‐algal growth rate

Decostere

Hulle

Duyck

et al. 2014

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…Kinetic modeling studies have mostly adopted the threshold theory to explain N-P co-limitation on microalgae growth [16][17][18]. On the other hand, the multiplicative theory was often applied to describe the effect of N, light, and CO 2 on microalgae growth [19][20][21][22]. Currently, there is no growth kinetic model that considers major multiple factors including N, P, light, CO 2 , and temperature, and their different co-limitation effects in the modeling framework [11].…”

Section: Introductionmentioning

confidence: 99%

Integrated co-limitation kinetic model for microalgae growth in anaerobically digested municipal sludge centrate

Lee

Zhang

2016

Algal Research

View full text Add to dashboard Cite

Microalgae have a substantial potential as a renewable energy resource, but sustainable microalgae-based bioenergy production has to find an inexpensive water and nutrient resource. Wastewater has been considered as such a resource to reduce environmental impacts and economic burdens of microalgae cultivation. Understanding of microalgae growth kinetics in wastewater is necessary to improve microalgae productivity for successful implementation of the integrated microalgae-wastewater system. This study presents an integrated colimitation kinetic model of microalgae growth in anaerobically digested municipal sludge centrate. Nitrogen (N), dissolved carbon dioxide (CO 2 ) concentrations, light intensity (I), and temperature (T) were selected as major growth factors in the model. The model framework was constructed by combining threshold and multiplicative structures to explain the relationship among these factors. Depending on culture conditions, the integrated model consists of alternative rate expressions for factors selected. These expressions include the Andrews and Monod models for both CO 2 and N, and the Chalker and Muller-Fuega models combined with the Arrhenius equation for light intensity and temperature. The model was calibrated and validated using batch studies with anaerobically digested municipal sludge centrate as wastewater source. Criteria to select the rate expressions considering limitation conditions include NH 4 -N ≤ 150 mg L −1 , aqueous CO 2 ≤ 50 mg L −1 , and light intensity ≤ 90 μmol photon m −2 s −1 . Above these ranges, the rate expressions considering both limitation and inhibition were applied to the model. The model was shown to have a reasonable growth rate prediction of Chlorella sp. under different nutrient levels of the centrate.

show abstract

“…Thus, research efforts should be performed regarding PBR design, scaling-up and optimization. Filali et al [18] developed a growth model for C. vulgaris considering the influence of light intensity and the total organic carbon. A bubble column PBR of 9.6 L was used with an illuminated area of 0.31 m 2 .…”

Section: Introductionmentioning

confidence: 99%

Outdoor Cultivation of the Microalga Chlorella vulgaris in a New Photobioreactor Configuration: The Effect of Ultraviolet and Visible Radiation

et al. 2020

View full text Add to dashboard Cite

Microalgae can be a future source of biomass with a wide range of applications, including its use to solve current environmental issues. One of the main variables for microalgal cultivation is the light supply: (i) its intensity that often does not present a uniform spatial distribution inside the culture; (ii) photoperiod; and (iii) spectrum. Therefore, this study aims to evaluate the growth of the microalgae Chlorella vulgaris in a tubular photobioreactor with compound parabolic collectors (CPCs) under outdoor conditions. The effect of ultraviolet and visible radiation on biomass productivity and nutrients (nitrogen and phosphorus) uptake was assessed. The maximum biomass productivity was (5 ± 1) × 10−3 g·L−1·h−1, and the specific growth rates ranged from (1.1 ± 0.3) × 10−2 to (2.0 ± 0.6) × 10−2 h−1. Regarding nutrient uptake, initial removal rates of (0.9 ± 0.4) mg N·L−1·h−1 for nitrogen and (0.17 ± 0.04) mg P·L−1·h−1 for phosphorus were reached. These values increased with visible and ultraviolet irradiance until certain values (143 WVIS·m−2 and 9 WUV·m−2 for biomass productivity; 101 WVIS·m−2 and 6 WUV·m−2 for nutrient removal) and then decreased for higher ones due to the photoinhibition phenomenon. Therefore, the application of CPCs to photobioreactors (PBRs) may be beneficial for microalgal culture in countries with higher latitude (with lower solar irradiance levels).

show abstract

Growth modeling of the green microalga Chlorella vulgaris in an air-lift photobioreactor

Cited by 24 publications

References 16 publications

The use of a combined respirometric–titrimetric setup to assess the effect of environmental conditions on micro‐algal growth rate

The use of a combined respirometric–titrimetric setup to assess the effect of environmental conditions on micro‐algal growth rate

Integrated co-limitation kinetic model for microalgae growth in anaerobically digested municipal sludge centrate

Outdoor Cultivation of the Microalga Chlorella vulgaris in a New Photobioreactor Configuration: The Effect of Ultraviolet and Visible Radiation

Contact Info

Product

Resources

About