Development a novel hexagonal airlift flat plate photobioreactor for the improvement of microalgae growth that simultaneously enhance CO2 bio-fixation and wastewater treatment

Yaqoubnejad, Poone; Rad, Hasan Amini; Taghavijeloudar, Mohsen

doi:10.1016/j.jenvman.2021.113482

Cited by 68 publications

(10 citation statements)

References 32 publications

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“…Biomass concentration (DCW, g L -1 ) and specific growth (𝜇, d -1 ) rates are calculated using the following Eq. ( 2), ( 3): (Yaqoubnejad et al 2021).…”

Section: Growth Analysismentioning

confidence: 99%

Optimization of the culture of Chlorella sorokiniana PA.91 by RSM: effect of temperature, light intensity, and MgAC-NPs

Bisheh

Rad

2023

Environ Sci Pollut Res

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The condition of the cultivation of newly isolated strains, Chlorella Sorokiniana PA.91, was optimized for the first time for magnesium Amino clay nanoparticles (MgAC-NPs) at various temperatures and light intensities in the culture medium of municipal wastewater (MWW) by Central Composite Design in the Response Surface Methodology (RSM-CCD). This study studied MgAC-NPs synthesized with their characteristics FE-SEM, EDX, XRD, and FT-IR. The synthesized MgAC-NPs were naturally stable, cubic-shaped, within the size range of 30 -60 nm. The optimization results show that at culture conditions of 20 °C, 37 μmol m -2 s -1 and 0.05 g L -1 microalga MgAC-NPs have the best growth productivity and biomass performance. Maximum dry biomass weight (55.41 %), specific growth rate (30.26%), chlorophyll (81.26%), and carotenoids (35.71%) were achieved under the optimized condition. Experimental results displayed that C. S PA.91 has a high capacity for lipid extraction (1.36 g L -1 ) and significant lipid efficiency (45.1%). Also, in 0.2 g L -1 of the MgAC-NPs, COD removal efficiency (91.1%) from C.S PA.91 -MgAC-NPs showed. These results showed the potential of C.S PA.91 -MgAC-NPs for nutrient removal in wastewater treatment plants and their quality as sources of biodiesel.

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“…Biomass concentration (DCW, g L -1 ) and specific growth (𝜇, d -1 ) rates are calculated using the following Eq. ( 2), ( 3): (Yaqoubnejad et al 2021).…”

Section: Growth Analysismentioning

confidence: 99%

Optimization of the culture of Chlorella sorokiniana PA.91 by RSM: effect of temperature, light intensity, and MgAC-NPs

Bisheh

Rad

2023

Environ Sci Pollut Res

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“…The system consisted of five main modules: CFD model, particle model, mass transfer model, light accumulation model, and algae growth model (Figure 1). turbulent kinetic energy; 17,18 radial velocity; 12,17,18 dead zone; 15,17,19 The CFD model was established by Ansys Fluent software to construct the two-phase flow model of photobioreactors with different structures and cultivation conditions. Except the basic CFD model, the improvement of the other four models were made and listed as follows: The particle model was built based on the stable flow field inside the photobioreactor established by the CFD model, and the related parameters were calculated by programming.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Compared with time-consuming and high-cost experiments, numerical models have been widely used in the design, optimization, and performance evaluation of PBRs in recent years. For examples, the computational fluid dynamics (CFD) model was applied to describe the internal flow ,− and mixing conditions of the bioreactor; coupled with the CFD model, the particle model was used to simulate the movement of cells and evaluate the light utilization or mixing conditions; − the mass transfer model − was adopted to calculate the CO 2 absorption of algae in medium; and the light model was used to estimate the light utilization of algae in the reactor. , Table summarizes the above relevant CFD studies on flow and mixing, particle model, mass transfer model, and light model, which indicates that CFD simulation is the most basic job in the reactor design and optimization. However, most previous research studies only used relevant CFD modules to study part of the performance of PBRs and found the optimal cultivation conditions through experiments, , but there was a lack of comprehensive study on these conditions through a model system.…”

Section: Introductionmentioning

confidence: 99%

Integrated Model for Design, Optimization, Scale-Up, Culture Scheme, and Production Evaluation of a Bioreactor and Its Application for Improving Algal Biomass and Carbon Fixation in Bioreactors

Zhao

Wang

et al. 2022

ACS Sustainable Chem. Eng.

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A comprehensive numerical model system for the bioreactor design, structure and cultivation condition optimization, scale-up, and carbon fixation performance evaluation was proposed. Three basic models of computational fluid dynamics, particle and mass transfer, and two improved models of algae growth and light accumulation were integrated innovatively. The algae growth model directly predicted the algal production performance of the bioreactor, and the error was less than 15% compared with the experimental results. The light accumulation model was proposed to simulate the spatial distribution of light utilization with the changes of algal concentration and light intensity. The model system was applied to scale up the flat plate photobioreactor with inclined baffles, and the results showed that the photobioreactor with 9 cm light path had a maximum ideal areal productivity (505.94 g/m 2 ) and better performance. Based on the light accumulation model, the strategy of changing the surface light intensity during the cultivation was proposed to maintain the light utilization and increase the production. Under the optimized surface light intensity, the maximum algal concentration and the average carbon fixation rate of the bioreactor were 43.41 and 248.35% higher than those of the constant light intensity. The proposed model system is a reliable and efficient experimental alternative tool for algal production evaluation and carbon fixation application of the bioreactor.

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“…[ 49 ] Another novel model was designed as a hexagonal airlift flat‐plate (HAFP) PBR combined with computational fluid dynamics (CFD) simulation which exhibited much higher CO 2 removal and biofixation as compared to a traditional PBR along with remarkably high nutrient removal efficiency from wastewater. [ 50 ]…”

Section: An Integrated Wastewater Microalgal Bioremediation‐biorefine...mentioning

confidence: 99%

Integration of Microalgae‐Based Wastewater Bioremediation–Biorefinery Process to Promote Circular Bioeconomy and Sustainability: A Review

Singh

Shourie

Mazahar

2022

CLEAN Soil Air Water

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Bioremediation of wastewater using microalgae is inexpensive, energy efficient, and effective in pollutant reduction as compared to conventional wastewater treatment technologies. Wastewater is a huge resource of minerals, nutrients, bioenergy, and valuable organic compounds and can be used for cultivation of microalgae. The microalgal biomass can be further used as biorefinery feedstock to produce biofuels and commercially important high‐value products. The potential of microalgae toward bioremediation and biorefinery applications presents the avenues for integrating the two processes to support circular bioeconomy and sustainability. This review presents a holistic view of integration of bioremediation and biorefinery processes using microalgae for deriving multiple benefits like pollutant removal, resource recovery, biofuel production, and generation of high‐value commercial products. The current status of high‐throughput microalgal screening technologies is also discussed since the selection of suitable microalgal strains is crucial for the application. The review further summarizes various processes involved in bioremediation and biorefinery systems such as cultivation, bioremediation, harvesting, and downstream processing. Recent trends in microalgal strain improvement for bioremediation and biorefinery applications through genetic engineering, bioinformatics, omics technologies, and genome editing tools are highlighted, while addressing the risks, biosafety issues, and regulatory affairs associated with genetically modified algae.

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Development a novel hexagonal airlift flat plate photobioreactor for the improvement of microalgae growth that simultaneously enhance CO2 bio-fixation and wastewater treatment

Cited by 68 publications

References 32 publications

Optimization of the culture of Chlorella sorokiniana PA.91 by RSM: effect of temperature, light intensity, and MgAC-NPs

Optimization of the culture of Chlorella sorokiniana PA.91 by RSM: effect of temperature, light intensity, and MgAC-NPs

Integrated Model for Design, Optimization, Scale-Up, Culture Scheme, and Production Evaluation of a Bioreactor and Its Application for Improving Algal Biomass and Carbon Fixation in Bioreactors

Integration of Microalgae‐Based Wastewater Bioremediation–Biorefinery Process to Promote Circular Bioeconomy and Sustainability: A Review

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