Article
Engineering, Environmental
Chaofan Zhang, Shih-Hsin Ho, Anran Li, Liang Fu, Dandan Zhou
Summary: The study suggests that a microalgal co-culture strategy can resist competition stress from bacteria and improve lipid production. The growth inhibition in the co-culture system was significantly reduced, and lipid production was 20-79% higher than that in monocultures.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Energy & Fuels
Dhandapani Senthamilselvi, Thangavel Kalaiselvi
Summary: This study showed that mutagenesis through gamma-irradiation can improve biomass and lipid productivity in oleaginous microalgae, making them a potential feedstock for biodiesel production.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Cell Biology
Yasutaka Morimoto, Shigeaki Saitoh, Yuko Takayama
Summary: Lipid droplets are organelles that store lipids for energy and membrane synthesis, and Lipomyces starkeyi cells rapidly accumulate lipids under nitrogen-depleted conditions. Cell cycle arrest at specific phases plays a key role in lipid accumulation in these cells, with lipid storage occurring during the G2/M phase and cell proliferation arrest enhancing lipid accumulation during the subsequent G1 phase.
JOURNAL OF CELL SCIENCE
(2022)
Article
Energy & Fuels
Tharunkumar Jayakumar, Suchitra Rakesh
Summary: Co-cultivation and effective downstream processing of microalgae and oleaginous yeast are potential strategies to enhance lipid yield. The study found that T. pullulans was the most effective yeast culture with microalgae S. obliquus, C. sorokiniana, and C. protothecoides with additional cell disruption techniques. Sonication was concluded as the best disruption technique. The co-cultures produced higher percentage of total FAME with high content of SFAs, indicating their suitability for biofuel production.
BIOENERGY RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Anne Marie Langseter, Simona Dzurendova, Volha Shapaval, Achim Kohler, Dag Ekeberg, Boris Zimmermann
Summary: The study evaluated three common direct transesterification methods for processing fungal biomass, finding that the Lewis and Lepage methods are suitable for lipid analysis of oleaginous filamentous fungi. However, some of the transesterification yields obtained may need correction, indicating the importance of careful selection and implementation of internal standards for gas chromatography.
MICROBIAL CELL FACTORIES
(2021)
Review
Environmental Sciences
Sivakumar Uthandi, Ashokkumar Kaliyaperumal, Naganandhini Srinivasan, Kiruthika Thangavelu, Iniya Kumar Muniraj, Xinmin Zhan, Nicholas Gathergood, Vijai Kumar Gupta
Summary: Microbial oils offer a potential solution for biodiesel production, with oleaginous microorganisms accumulating high levels of oils in their cells. Using lignocellulosic biomass as a renewable raw material for producing second-generation biodiesel has become a fundamental approach for tackling challenges of higher energy costs, environmental protection, and depletion of crude oil reserves. Research is focused on examining different microbes' lipid accumulation capability using lignocellulosic biomass as substrates and overcoming future challenges in using lignocellulosic biomass for biodiesel production.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Hoa Thai Doan, Phuong Thi Minh Nguyen, Thuy Thanh Tran, Thoa Kim Nguyen, Man Dinh Tran, Duc Ba Nguyen
Summary: This study focused on lime pretreatment of rice straw in northeast Vietnam for microbial lipid production, using a response surface methodology to optimize parameters. The optimal pretreatment conditions for maximal lipid yield were determined, with saturated, monounsaturated (MUFA), and polyunsaturated (PUFA) fatty acids composing the bio-lipid.
Article
Environmental Sciences
Jiayin Ling, Yanbin Xu, Chuansheng Lu, Waner Hou, Qing Liu, Fei Wang, Qingping Du
Summary: Microbial contamination and high sterilization costs are key limitations in resource recovery processes like lipid production from wastewater. This study identified the importance of antimicrobial compounds and pH in preventing contamination, as well as the shift in dominant undesirable microorganisms with pH changes during the culture process. Utilizing the antimicrobial properties of distillery wastewater and proper pH control can enhance oleaginous yeast growth and improve lipid production in non-sterile conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Energy & Fuels
Tanmoy Roy Tusher, Jui-Jen Chang, Maria Ita Saunivalu, Sosuke Wakasa, Wen-Hsiung Li, Chieh-Chen Huang, Chihiro Inoue, Mei-Fang Chien
Summary: Sustainable management of harvested hyperaccumulating plants for phytoremediation of toxic metals is challenging. This study developed a recombinant bacteria-yeast co-culture system that can efficiently produce ethanol from phytomass of arsenic-hyperaccumulator Pteris vittata, while removing toxic metals.
Review
Environmental Sciences
Tanushree Paul, Arindam Sinharoy, Divya Baskaran, Kannan Pakshirajan, G. Pugazhenthi, Piet N. L. Lens
Summary: This paper discusses the thermochemical conversion process of converting biomass into bio-oil, focusing on the advantages and detailed information of oleaginous microorganisms as biomass feedstocks, as well as the use of wastewater as their substrate. The different process parameters affecting the HTL technology are also discussed, along with an integrated HTL-based sustainable biorefinery approach for resource recovery.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Review
Biotechnology & Applied Microbiology
Patrycja Szczepanska, Piotr Hapeta, Zbigniew Lazar
Summary: The global market for high-value fatty acids production, driven by increasing demand from industries like cosmetics, food and oleochemical, has seen significant development in the last decade. Microbial oil production, especially with oleaginous yeasts, has emerged as a promising alternative source due to its ability to engineer pathways and store desired fatty acids enriched lipids, thus avoiding costly chemical steps and enabling direct commercial use. The optimization of culture conditions for improving yield and titer of valuable compounds is a key focus along with the economic aspects of microbial oil production.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2022)
Article
Engineering, Chemical
Amrit Lal, Sanjukta Banerjee, Debabrata Das
Summary: Efficient biomass recovery of Chlorella sp. MJ11/11 was achieved using pellet forming Aspergillus sp. through fungal pelletization process. The study evaluated the impact of different process factors on biomass recovery, achieving over 90% harvesting efficiency at pH 3 within 5 hours when algae: fungi were used in 1:3 w/w ratios.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Agricultural Engineering
Xiaolei Zhang, Lu Liu, Juan Peng, Fang Yuan, Ji Li, Jiawen Wang, Jiaxin Chen, Hongjie Wang, R. D. Tyagi
Summary: The study found that Cd2+ had a significant impact on lipid accumulation in Lipomyces starkeyi, while other metals had minimal effects. Removing metals from municipal wastewater sludge reduced lipid accumulation, possibly because some metals can enhance lipid accumulation.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Padil, Meilana Dharma Putra, Iryanti Fatyasari Nata, Doni Rahmat Wicakso, Zulfarina, Chairul Irawan, Amun Amri
Summary: Microalgae cultivated in peat swamp water showed higher biomass and productivity compared to those in pure water. The proposed kinetic model, with modification to the modified Gompertz model, demonstrated excellent predictive performance in terms of initial biomass and lag phase.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Arunachalam Bose Sathya, Arunachalam Thirunavukkarasu, Rajarathinam Nithya, Abhishek Nandan, Krishnamoorthy Sakthishobana, Anand Kishore Kola, Raja Sivashankar, Hoang Anh Tuan, Balakrishnan Deepanraj
Summary: This review aims to critically analyze the possible gaps in current research on biofuel production and present potential scientific challenges.
Article
Water Resources
Guillaume Nielsen, Lucie Coudert, Amelie Janin, Jean Francois Blais, Guy Mercier
MINE WATER AND THE ENVIRONMENT
(2019)
Article
Environmental Sciences
Khalifa Lounate, Lucie Coudert, Thomas Genty, Guy Mercier, Jean Francois Blais
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Sophie Costis, Lucie Coudert, Kristin K. Mueller, Emmanuelle Cecchi, Carmen Mihaela Neculita, Jean-Francois Blais
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
El Houssaine Moutiy, Lan-Huong Tran, Kristin K. Mueller, Lucie Coudert, Jean-Francois Blais
Article
Water Resources
Khalifa Lounate, Lucie Coudert, Thomas Genty, Guy Mercier, Jean Francois Blais
MINE WATER AND THE ENVIRONMENT
(2020)
Article
Materials Science, Multidisciplinary
Lan-Huong Tran, Kulchaya Tanong, Ahlame Dalila Jabir, Guy Mercier, Jean-Francois Blais
Article
Environmental Sciences
Driss Barraoui, Jean-Francois Blais, Michel Labrecque
Summary: This study evaluated the effectiveness of a chemical leaching process for cleaning biosolids and removing metals without reducing their agronomic potential. The results showed that while cleaned biosolids decreased metal concentrations in soil, the impact on plants, leachate, and soil metal concentrations was not significant.
Article
Geochemistry & Geophysics
Javier F. Reynes, Guy Mercier, Jean-Francois Blais, Louis-Cesar Pasquier
Summary: This study explores the feasibility of indirect mineral carbonation process using silicic, Fe-rich mining waste with direct flue gas CO2 via iron complexation using 2,2'-bipyridine. The results showed that under suitable conditions, 38% of Fe cations can be leached, complexed, and reacted under mild conditions, achieving a CO2 uptake of 57.3%.
Article
Geochemistry & Geophysics
Nicolas Reynier, Roselyne Gagne-Turcotte, Lucie Coudert, Sophie Costis, Rory Cameron, Jean-Francois Blais
Summary: This study found that tailings from inactive uranium mine sites can serve as a potential secondary source of rare earth elements, with successful solubilization of key elements like REEs, U, and Th through bioleaching experiments. Different ion exchange resins could be used for effective recovery of these elements, showing promising results for co-extraction from the bioleaching solution.
Article
Geochemistry & Geophysics
Sophie Costis, Lucie Coudert, Kristin K. Mueller, Carmen Mihaela Neculita, Jean-Francois Blais
Summary: The study found that under freeze-thaw cycles, the mobility of certain elements in rare earth tailings decreased, reducing the potential environmental contamination risk.
APPLIED GEOCHEMISTRY
(2021)
Article
Environmental Sciences
Sophie Costis, Lucie Coudert, Kristin Mueller, Carmen Mihaela Neculita, Jean-Francois Blais
Summary: The study evaluated the impact of salinity on flotation tailings behavior at Eldor deposit in Quebec. Tests showed that divalent cations were more mobile in the presence of CaCl2, while U and Sc were most mobile in the presence of salts regardless of the solution used. The presence of salts tended to increase the mobility of divalent cations in the residues and enhance their contamination potential.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Mariana Valdez Castillo, Satinder Kaur Brar, Sonia Arriaga, Jean-Francois Blais, Antonio Avalos Ramirez
Summary: This study aimed to increase the production of 2-phenylethanol by fermenting whey with immobilized yeasts. The results showed that the immobilization of yeasts on inert support significantly increased the production of 2-phenylethanol, with the highest yield achieved using filter Kaldnes plastic rings.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Geochemistry & Geophysics
Sitraka Herizo Andrianandraina, Houshang Darvishi-Alamdari, Jean-Francois Blais
Summary: The reuse of bioleachate reduces water consumption and nutrient requirements, and has a positive effect on gold recovery and the solubilization rates of other metals.
Article
Biochemistry & Molecular Biology
Mariana Valdez Castillo, Satinder Kaur Brar, Sonia Arriaga, Jean-Francois Blais, Michele Heitz, Antonio Avalos Ramirez
Summary: This study aimed to valorize agri-food residues by developing a suitable bioprocess for the production of 2-phenylethanol (2PE) from cheese whey. The results showed that the addition of brewer's spent yeast (BSY) as a nitrogen source promoted the growth of yeasts and the production of 2PE. Scale-up to a 2 L bioreactor resulted in twofold better productivity compared to the literature. The bioprocess contributed to the circular economy of the dairy industry by preventing environmental contamination.
Article
Environmental Sciences
Driss Barraoui, Jean-Francois Blais, Michel Labrecque
Summary: The chemical leaching process was effective in cleaning municipal biosolids spiked with heavy metals, resulting in improved corn growth when used as soil amendments. Cleanup and washing increased the total biomass of roots and stalks, but also reduced the biosorption of metals like Cd, Cu, and Zn, while leaching of metals into outlet water remained at moderately low levels.
EMERGING CONTAMINANTS
(2021)
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
V. Godvin Sharmila, Surya Prakash Shanmugavel, J. Rajesh Banu
Summary: Proper treatment and disposal of biomass waste is crucial to prevent environmental deposition and its negative impacts. Biofuel has emerged as a potential alternative to fossil fuels, reducing carbon emissions and meeting global energy demands. This review examines different biomass waste conversion techniques and explores the production of biofuels with zero carbon emissions. Research on anaerobic treatment, metabolic engineering, and artificial intelligence has been conducted to enhance biofuel production efficiency.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
Selvakumar Periyasamy, Adane Asefa Adego, P. Senthil Kumar, G. G. Desta, T. Zelalem, V. Karthik, J. Beula Isabel, Mani Jayakumar, Venkatesa Prabhu Sundramurthy, Gayathri Rangasamy
Summary: Valorizing agricultural waste into valuable products is crucial for environmental protection and bioeconomy advancement. Preprocessing of agricultural waste is a critical step to convert free carbohydrate molecules for final conversion, and factors such as biomass nature, feed loading, pH, temperature, and time influence the process. This review provides comprehensive information on agricultural waste availability, preprocessing techniques, and factors influencing performance.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Aqueel Ahmad, Ashok Kumar Yadav, Achhaibar Singh, Dinesh Kumar Singh
Summary: The study focuses on predicting and optimizing the yield of biogas production in an anaerobic digester using co-digestion. Experimental data was used to develop a machine learning-based prognostic model, and the Response Surface Methodology (RSM) was employed to optimize the parameters. The results demonstrate that RSM coupled with machine learning is an effective technique for modeling, predicting, and optimizing biogas production yield.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Yijing Zhong, Wenxiang Zhai, Xinli Wei
Summary: This paper studies the thermal stability and decomposition of cork materials with and without silica aerogel filler. The results show that the decomposition is inhibited and the pyrolysis is significantly reduced with the addition of silica aerogel. This finding suggests that silica aerogel-infused cork may be a promising raw material for biofuel production with reduced environmental pollution.
BIOMASS & BIOENERGY
(2024)
