Review
Environmental Sciences
Hoang Tam Nguyen, Yeomin Yoon, Huu Hao Ngo, Am Jang
Summary: This paper reviews the potential and mechanisms of microalgae-based systems for removing organic micropollutants, compares them with other treatment methods, and provides recommendations for future research.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Murilo Gasparin Rampi, Wellington Balmant, Diego de Oliveira Correa, Beatriz Santos, Nelson Fernando Herculano Selesu, Ihana Aguiar Severo, Andre Bellin Mariano, Jose Viriato Coelho Vargas, Juan C. Ordonez
Summary: A mathematical model is proposed to simulate the growth of microalgae from emissions in an outdoor airlift photobioreactor. The model takes into account the influence of total nitrogen, total phosphorus, CO2, temperature, and light intensity on biomass production. The model was tested under different experimental conditions with satisfactory results, making it useful for optimizing biomass production in other microalgae systems.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Review
Nanoscience & Nanotechnology
Lihua Shen, Xiaobo Yin
Summary: Photosynthesis is a vital biological process that converts solar energy to chemical energy. Photon engineering through spectral conversion materials shows promise in enhancing photosynthesis efficiency. This review focuses on the emerging spectral conversion materials and their potential applications in enhancing photosynthesis in plants and microalgae.
Review
Agricultural Engineering
Yahui Sun, Deshen Hu, Haixing Chang, Shengnan Li, Shih-Hsin Ho
Summary: This review systematically summarizes recent progress on enhancing light and CO2 availabilities in microalgal photosynthesis. Strategies for increasing light availability and enhancing CO2 light availability are discussed. The possible future directions for PBRs implementation and development are also presented.
BIORESOURCE TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Anand Baby Alias, Shubhanvit Mishra, Gaurav Pendharkar, Chi-Shuo Chen, Cheng-Hsien Liu, Yi-Ju Liu, Da-Jeng Yao
Summary: Microalgae are a significant source of renewable, sustainable and economical biofuels, with vast potential applications in energy, pharmaceutical and nutraceutical industries. The utilization of microfluidic technology plays a vital role in microalgal processes and applications in biofuels and biosensing.
Article
Agricultural Engineering
Michael Sandmann, Sergiy Smetana, Volker Heinz, Sascha Rohn
Summary: This study compared two different photobioreactors and found that MUTL-PBR outperformed the traditional reactor in terms of biomass and antioxidant capacity, but its higher energy demand led to a greater environmental burden. MUTL-PBR shows potential for sustainable production of bioactive substances.
BIORESOURCE TECHNOLOGY
(2021)
Review
Environmental Sciences
N. Sanaye Mozaffari Sabet, Abooali Golzary
Summary: The study investigates the impact of bubble size, gas velocity, and photobioreactor structure on carbon dioxide fixation by microalgae. It reveals an inverse relationship between carbon dioxide concentration and bubble growth. Additionally, the study finds that increasing bubble velocity leads to a decrease in liquid and gas contact concentration.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Thermodynamics
A. Leroy, B. Bhatia, J. Sircar, E. N. Wang
Summary: Polyethylene aerogels (PEAs) have unique optical and thermal properties that make them ideal for applications requiring infrared-transparent thermal insulation. By studying thermal transport in PEAs, we find that gas conduction and radiative transfer are the dominant heat transfer mechanisms. We propose several ways to improve the thermal insulation performance, such as reducing pore size, gas pressure, and using lower thermal conductivity gases.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Agricultural Engineering
Panneerselvam Ranganathan, Ashutosh Kumar Pandey, Ranjna Sirohi, Anh Tuan Hoang, Sang-Hyoun Kim
Summary: This study reviews the application of computational flow modelling in photobioreactors and discusses an integrated modelling approach for these reactors. It also reviews intensified systems for improving the performance of photobioreactors. Future considerations include the development of multi-scale modelling methods and low-cost efficient computational frameworks, as well as the use of process intensification techniques to enhance hydrodynamics, mixing, and mass transfer in photobioreactors.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Krishnamurthy Mathivanan, Fuad Ameen, Ruiyong Zhang, Gangalla Ravi, Srinivas Beduru
Summary: The present study developed a 5 L bubble column photobioreactor (BCPR) to investigate the biomass and lipid production of two microalgal strains and their consortium under different CO2 concentrations. The results showed that higher CO2 concentrations significantly increased biomass and lipid yield, as well as chlorophyll-a content. Interestingly, the lipid content of the consortium remained similar across all CO2 concentrations, with the highest fatty acid levels and favorable fuel properties observed under 10% CO2 supply.
ENVIRONMENTAL RESEARCH
(2023)
Review
Energy & Fuels
Giovanni Luzi, Christopher McHardy
Summary: This article reviews common photobioreactor types and discusses the processes occurring therein as well as how these processes have been considered in previous CFD models. The analysis reveals that CFD models of photobioreactors often do not consider state-of-the-art modeling approaches. This comprehensive overview provides a unique toolbox for generating CFD models of photobioreactors, and directions for future research are also discussed.
Article
Optics
Tianhao Fei, Li Lin, Xingcan Li, Jia-Yue Yang, Junming Zhao, Linhua Liu
Summary: This study investigated the effects of bubbles on the radiation characteristics of microalgae growth and proposed a one-dimensional model of bubbles on time-dependent radiation transfer. Experimental results showed that with the increase of bubble volume fraction or the decrease of bubble radius, the local irradiance at the illuminated surface of microalgal culture increased and attenuated more rapidly along with the radiation transfer. Additionally, the average specific growth rate of microalgae decreased as the bubble volume fraction increased or bubble radius decreased.
Article
Engineering, Chemical
B. Le Gouic, H. Marec, J. Pruvost, J. F. Cornet
Summary: This study validated the accuracy of a well-controlled photobioreactor experiment setup and investigated the transfer and assimilation of CO2 in water by photosynthetic microorganisms. The gas-liquid mass transfer coefficient (k(L)a) was modeled to understand the dissolution of CO2 in water, affected by the composition of the culture medium and its pH value. Additionally, the carbon assimilation and growth limitation by the carbon source were studied for the microalga Chlorella vulgaris.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Aerospace
Justin Kerr, John E. Moores, Christina L. Smith
Summary: Solar energy is a crucial power source for Mars surface missions. By utilizing a 1D radiative transfer algorithm, we examine the optimal orientation of static, tilted solar panels on Mars and compare their energy output to sun-tracking panels. Tilted static solar panels can harvest up to 8.5 times more solar energy than horizontally placed panels, depending on location and time of year. Static panels set at optimal angles and azimuths can receive at least 53% of the solar energy available to sun-tracking panels. The polar regions show the most significant benefits from angled and sun-tracking panels.
ADVANCES IN SPACE RESEARCH
(2023)
Article
Virology
Gino Schiano di Visconte, Michael J. Allen, Andrew Spicer
Summary: Traditional methods for investigating virus-induced microalgal host lysis and infection dynamics are time-consuming and prone to low sensitivity and high error rates. This study introduces a new method that combines spectrometry, plaque assays, and infection dose assessment to monitor infected microalgae cultures under controlled lab-scale photobioreactors. This automated approach allows for accurate determination of virus lysis time, investigation of molecular signaling impacting the virus life cycle, and assessment of functional diversity of virus isolates.
Article
Energy & Fuels
Vladimir Heredia, Olivier Goncalves, Luc Marchal, Jeremy Pruvost
Summary: The biological responses of two algae species in nitrogen limitation and day-night cycles for energy-rich compound accumulation were investigated, with Parachlorella kessleri showing good potential for biodiesel and bioethanol production, while Nannochloropsis gaditana was found to be more efficient for biodiesel production.
Article
Chemistry, Physical
E. Ribeiro, G. Plantard, V. Goetz
Summary: This study successfully synthesized AC/TiO2 composites with adjustable properties through a simple preparation method. Research shows that as the adsorbent mass ratio gradually increases, the adsorption properties of the composites improve, while the photo-oxidation rate decreases.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Antoine Decamp, Orane Michelo, Christelle Rabbat, Celine Laroche, Dominique Grizeau, Jeremy Pruvost, Olivier Goncalves
Summary: A new methodological approach relying on enzyme specificity was developed to estimate the composition of bioactive polysaccharides produced by microalgae directly in algal cultures. This method allows for routine monitoring of the quality of bioactive polysaccharides in algal cultures grown in photobioreactors, with high resolution and without the constraints associated with traditional chromatographic methods.
Article
Chemistry, Multidisciplinary
Hareb Al Jabri, Aumaya Taleb, Raphaelle Touchard, Imen Saadaoui, Vincent Goetz, Jeremy Pruvost
Summary: Temperature and light are crucial factors for microalgae production, affecting their growth kinetics, physiological properties, and adaptation mechanisms. In the Qatar desert, there are wide variations in temperature and light intensity, making it essential to study their effects on microalgae for large-scale outdoor production systems. Studies show that dynamic light and temperature have interactive effects on biomass productivity, with microalgae showing a high level of adaptation to fluctuations in light and temperature stress.
APPLIED SCIENCES-BASEL
(2021)
Article
Biotechnology & Applied Microbiology
Vladimir Heredia, Jeremy Pruvost, Olivier Goncalves, Delphine Drouin, Luc Marchal
Summary: The aim of this study is to track and optimize the extraction of lipids from Nannochloropsis gaditana in wet extraction operations. Disruption efficiency of microalgal suspensions varied depending on their physiological states, with different methods used to recover the fatty acids released. The interaction between biomass concentration and solvent inlet rate was found to have the greatest influence on lipid recovery.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Biotechnology & Applied Microbiology
Vladimir Heredia, Luc Marchal, Olivier Goncalves, Jeremy Pruvost
Summary: This study investigates the optimization of TAG production in microalgae by continuous nitrogen-limited culture, focusing on mechanical resistance of strains and optimal harvesting time. The study compared continuous nitrogen addition to pulsed addition, with continuous addition resulting in the highest released TAG.
BIOTECHNOLOGY AND BIOENGINEERING
(2022)
Article
Environmental Sciences
Chan Li, Nayara de Melo Costa Serge, Raquel Fernandes Pupo Nogueira, Serge Chiron, Vincent Goetz
Summary: The study demonstrates that FBC-CuO combined with PDS can effectively remove antibiotics and disinfect pathogens in wastewater, confirming its potential through experiments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Reoyo-Prats Brice, Joannis-Cassan Claire, Hammadi Mouldi, Goetz Vincent, Calas-Blanchard Carole, Plantard Gael
Summary: This study addresses the conditions of wastewater treatment by photo-oxidation, emphasizing the importance of the matrix, concentration, and cocktail effects of pharmaceutical pollutants in wastewater treatment plants. It was found that the matrix effect had the most negative impact on molecule removal, while the cocktail effect decreased the difference in degradation rates. Additionally, lower initial concentrations were easier to degrade than higher laboratory concentrations.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Rebiha Adjout, Jean-luc Mouget, Jeremy Pruvost, Imene Chentir, Celine Loiseau, Mohammed Bey Baba Hamed
Summary: This study investigated the growth and biochemical composition of H. ostrearia under different temperatures, irradiances, and pH values. The results showed that the production of specific metabolites can be controlled under specific conditions.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Environmental
Reoyo-Prats Brice, Sellier Anastasia, Khaska Somar, Le Gal Lassalle Corinne, Weiss Karine, Goetz Vincent, Plantard Gael
Summary: Wastewater is a significant problem for the ecosystem due to its large quantities, the treatment methods used in most wastewater treatment plants, and the level of contamination by various pollutants, particularly emerging ones. One possible solution to reduce the pressure on water resources is the reuse of treated wastewater for various purposes. This paper investigates the capabilities of a photoreactor for removing micropollutants from wastewater, specifically urban wastewater. The experiments are conducted under controlled artificial irradiation conditions to simulate sunlight. The results show that the oxidation process selectively removes different categories of substances, but some molecules are not completely oxidized. Overall, the study evaluates the mass capacities of the system per unit of irradiated surface and per day for the target molecules.
Article
Chemistry, Multidisciplinary
Jeremy Pruvost, Benjamin Le Gouic, Jean-Francois Cornet
Summary: This article introduces and validates a model that relates the effects of parameters on CO2 biofixation rates and CO2 use efficiency. It also discusses the different gas-liquid mass transfer performances of mechanically stirred and airlift systems. The article concludes that covered raceways have a higher CO2 use efficiency, while airlift systems have a higher CO2 supply but lower CO2 use efficiency.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Chemical
Vincent Goetz, Chloe Dezani, Enrique Ribeiro, Cyril Caliot, Gael Plantard
Summary: This article aims to develop a modeling and simulating tool for the operation of a continuous flow heterogeneous photocatalysis reactor. By focusing on the coupling between radiative transfer and reaction kinetics, and utilizing the Monte Carlo method to solve the radiative transfer equation, the dynamic simulation model has been validated.
Article
Materials Science, Multidisciplinary
E. Ribeiro, G. Plantard, V. Goetz
Summary: This research aims to develop activated carbon/TiO2 composites with a core-shell structure, where the AC core is covered with a photocatalyst. By modulating the fabrication procedures through mechanical grinding, the spatial distribution of the components can be controlled, preserving their sorption and photocatalytic properties. These core-shell composites offer a double functionality, allowing for accessibility to adsorption sites and maximum light harvesting.
Article
Engineering, Environmental
Chloe Dezani, Enrique Ribeiro, Vincent Goetz, Gaël Plantard
Summary: This study models the degradation of caffeine, a persistent pollutant, in a photo-reactor using a TiO2 catalyst. By solving the mass balance equation and the radiative transfer equation, and using Monte-Carlo method and Mie theory, the degradation rate and the treatment capacity and efficiency of the process were determined.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2022)
Article
Engineering, Environmental
Chan Li, Vincent Goetz, Serge Chiron
Summary: This study demonstrated the effective degradation of phenol and antibiotics in water using the CuO/PDS system, with Cu(III) and O·2- playing key roles in the process. The reduction and oxidation reactions involving copper in the system led to stable catalytic degradation of contaminants, with minimal leaching of copper from CuO observed in wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
