Article
Green & Sustainable Science & Technology
Wageeporn Maneechote, Benjamas Cheirsilp, Naruepon Liewtrakul, Sirasit Srinuanpan, Wasu Pathom-aree, Neeranuch Phusunti
Summary: Two promising oleaginous microalgae, Scenedesmus sp. SPP and marine Chlorella sp., were grown under different nutrient modes. They showed the best growth under mixotrophic/nitrogen-rich conditions, indicating their ability to metabolize both inorganic (CO2) and organic (glucose) carbon sources. Lipid accumulation with superior biodiesel properties was promoted under mixotrophic/nitrogen-starvation conditions. The optimization of key energy sources, including light intensity, CO2, and glucose concentrations, for mixotrophic cultivation was successfully performed using Response Surface Methodology. Two-stage mixotrophic cultivation enhanced biomass and lipids, as well as improved biodiesel properties. These strategies are important for the development of microalgae-based biofuel and biochemical industries.
Article
Multidisciplinary Sciences
Jinhu Wang, Qiangying Zhang, Naijiang Chen, Junyu Chen, Jinna Zhou, Jing Li, Yanli Wei, Duo Bu
Summary: This study investigates the potential applications of plateau microalgae in environmental purification, biotechnology, and renewable energy. It identifies the high biomass microalgae through screening and sequencing, and examines their light-absorbing properties. The study provides insights into the basic research methods and optimal cultivation conditions for microalgae in high altitude areas.
Article
Engineering, Environmental
Vishal Anand, Mrinal Kashyap, Mahaveer P. Sharma, Kiran Bala
Summary: By adjusting the nutrient combinations, this study demonstrated the potential of Scenedesmus sp. in responding to a multi-component stress environment, improving the quality of fatty acid methyl esters (FAME) composition, and significantly enhancing the quality of algal biofuels produced in a short period.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
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)
Article
Energy & Fuels
MubarakAli Davoodbasha, Arivalagan Pugazhendhi, Jung-Wan Kim, Sang-Yul Lee, Thajuddin Nooruddin
Summary: The study achieved successful conversion of algal oil into biodiesel using CaO nanocatalyst, and optimized the process by adjusting reaction parameters and catalyst concentration.
Article
Environmental Sciences
Zihao Cao, Xiaotong Shen, Xujing Wang, Baohua Zhu, Kehou Pan, Yun Li
Summary: Microalgae, especially alkalophilic ones, show promise for simultaneous production of fucoxanthin and biofuels. Optimal production levels were achieved at a nitrogen concentration of 117.65 mM, with excellent biofuel properties in the fatty acid methyl esters meeting European standards.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Microbiology
Pengchong Wang, Yahui Shao, Yun Geng, Rubina Mushtaq, Wenlong Yang, Mei Li, Xiuqin Sun, Hongbo Wang, Gao Chen
Summary: Secondary effluents contain high levels of nitrogen and phosphorous, which can cause eutrophication if not treated. Microalgae have been found to effectively remove these nutrients and pollutants from wastewater, making them suitable for secondary effluent treatment.
FRONTIERS IN MICROBIOLOGY
(2023)
Review
Microbiology
Livia Marques Casanova, Leonardo Brantes Bacellar Mendes, Thamiris de Souza Correa, Ronaldo Bernardo da Silva, Rafael Richard Joao, Andrew Macrae, Alane Beatriz Vermelho
Summary: Microalgae are considered a promising source of biodiesel due to their ability to be cultivated on non-arable land and high growth rate. However, microalgal biodiesel is currently not economically competitive compared to fossil fuels and crop-based biodiesel, hence not commercially produced. This review discusses technologies to increase efficiency and reduce costs of microalgal biodiesel production, as well as opportunities and challenges for large-scale production. The successful case of microalgal biodiesel research and development by Petrobras in Brazil is presented.
Article
Engineering, Environmental
Kanda Whangchai, Thangavel Mathimani, Manigandan Sekar, Sabarathinam Shanmugam, Kathirvel Brindhadevi, Tran Van Hung, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Arivalagan Pugazhendhi
Summary: The study found that mixotrophic cultivation of Chlorella vulgaris can increase biomass yield, lipid content and fatty acid composition, with the best results achieved at specific concentrations of acetate and dextrose.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Gabriela F. Ferreira, Luisa F. Rios Pinto, Patricia O. Carvalho, Mirela B. Coelho, Marcos N. Eberlin, Rubens Maciel Filho, Leonardo Fregolente
Summary: Microalgae are promising for biofuel production, but further research is needed for their potential in food, cosmetic, and pharmaceutical industries. Different species of microalgae exhibit varying growth parameters and fatty acid compositions, some of which are valuable for food and pharmaceutical industries.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Environmental Sciences
Elamathi Vimali, Arumugasamy Senthil Kumar, Nagamalai Sakthi Vignesh, Balasubramaniem Ashokkumar, Amarajothi Dhakshinamoorthy, Aswathy Udayan, Muthu Arumugam, Arivalagan Pugazhendhi, Perumal Varalakshmi
Summary: This study evaluated the biodiesel potential of indigenous microalgae Desmodesmus sp. VV2 and optimized the culture medium using Response Surface Methodology (RSM) to enhance lipid accumulation. The results showed that under optimized conditions, the microalgae exhibited significantly increased lipid and saturated fatty acid (SFA) content, with the highest total FAME content achieved. The quality of the biodiesel produced from the optimized culture medium also met international standards.
Article
Agricultural Engineering
Manogaran Lakshmikandan, A. G. Murugesan, Fuad Ameen, Cherdsak Maneeruttanarungroj, Shuang Wang
Summary: The co-cultivation of green algae Asterococcus limneticus WL2 and phytohormone producing Streptomyces rosealbus MTTC 12951 was conducted to study the production of indole-3-acetic acid (IAA) and its precursors. The co-cultivation exhibited increased hormonal activity due to symbiotic interaction between Streptomyces and microalgae. Compared to monocultivation, co-cultivation resulted in 52% and 83% higher production of tryptophan and IAA in the extracellular space, respectively. The co-cultivation strategy also led to increased biomass and lipid productivity of microalgae.
BIOMASS & BIOENERGY
(2023)
Article
Plant Sciences
Yi Xin, Qintao Wang, Chen Shen, Chunxiu Hu, Xianzhe Shi, Nana Lv, Xuefeng Du, Guowang Xu, Jian Xu
Summary: Depending on their chain length, triacylglycerols (TAGs) have different applications, so it is desirable to have a genetically designed feedstock with specific chain length for maximizing process efficiency and product versatility. In the microalga Nannochloropsis oceanica, two enzymes were found to assemble medium-chain fatty acids (MCFAs) into TAGs, with one being a generalist and the other a specialist. By manipulating these enzymes, the production of medium-chain triacylglycerols (MCTs) in TAGs can be significantly increased in microalgae, allowing for the production of designer oils.
Article
Energy & Fuels
Mostafa M. El-Sheekh, Hamed M. Eladel, Abd El-Fatah Abomohra, Mohamed G. Battah, Soha A. Mohamed
Summary: The present study aimed to optimize culture conditions for algal growth and lipid production of Desmodesmus intermedius using Plackett-Burman statistical experimental design. The results showed that the combination of sodium nitrate, sodium chloride, kinetin hormone, vitamin B-12, and light intensity resulted in maximum lipid productivity. Fatty acid profile analysis revealed the presence of 14 fatty acids suitable for high-quality biodiesel production.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Chemistry, Multidisciplinary
Shirley Mora-Godinez, Carlos Eduardo Rodriguez-Lopez, Carolina Senes-Guerrero, Victor Trevino, Rocio Diaz de la Garza, Adriana Pacheco
Summary: This study characterized the lipid composition of Desmodesmus abundans RSM algae under different CO2 concentrations. The results showed that the presence of CO2 affected the synthesis and consumption of lipids in the algae cultures.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Thermodynamics
Bruno Aguilar Veiga, Julia Trancoso Fernandes dos Santos, Luiz Fernando de Lima Luz Junior, Marcos Lucio Corazza
JOURNAL OF CHEMICAL THERMODYNAMICS
(2017)
Article
Chemistry, Physical
Paula C. Murad, Fabiane Hamerski, Marcos L. Corazza, Luiz F. L. Luz, Fernando A. P. Voll
REACTION KINETICS MECHANISMS AND CATALYSIS
(2018)
Article
Environmental Sciences
L. F. Rios, A. Martinez, B. C. Klein, M. R. Wolf Maciel, R. Maciel Filho
WASTE AND BIOMASS VALORIZATION
(2018)
Article
Energy & Fuels
Gustavo Lunardon Quillo, Carolina Vieira Lass, Marcos Lucio Corazza, Eliton Fontana, Luiz Fernando de Lima Luz
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
Diego Rodrigues Pessoa, Anelize Terezinha Jung Finkler, Alex Vinicius Lopes Machado, David Alexander Mitchell, Luiz Fernando de Lima Luz
APPLIED MATHEMATICAL MODELLING
(2019)
Review
Green & Sustainable Science & Technology
G. F. Ferreira, L. F. Rios Pinto, R. Maciel Filho, L. V. Fregolente
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2019)
Article
Engineering, Chemical
Eliton Fontana, Claudia A. Capeletto, Victor G. S. Santos, Evandro Garbin, Mariana M. Cunha, Luiz F. L. Luz Jr
CHEMICAL ENGINEERING SCIENCE
(2020)
Article
Food Science & Technology
Priscila S. Horacio, Bruno A. Veiga, Luiz F. Luz Jr, Caio A. Levek, Ariadine R. de Souza, Agnes P. Scheer
JOURNAL OF THE INSTITUTE OF BREWING
(2020)
Article
Multidisciplinary Sciences
Tannaz Pak, Luiz Fernando de Lima Luz, Tiziana Tosco, Gabriel Schubert Ruiz Costa, Paola Rodrigues Rangel Rosa, Nathaly Lopes Archilha
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Engineering, Environmental
Anelize Terezinha Jung Finkler, Mariana Zanlorenzi Weber, Gustavo Alexandre Fuchs, Leandro Aluisio Scholz, Luiz Fernando de Lima Luz, Nadia Krieger, David Alexander Mitchell, Luiz Mario de Matos Jorge
Summary: Although mathematical models of heat and mass transfer in packed-bed bioreactors have been developed for decades, experimental determination of heat and mass transfer coefficients between solids and air phases has been limited. In this study, experiments were conducted in a pilot packed-bed bioreactor to investigate the heat and mass transfer coefficients, which were found to have a lesser effect on temperature profiles compared to varying air flow rates. It was concluded that separate phase models recognizing the non-equilibrium conditions between solids and air are essential for accurate description of the system.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Bruna Wiederkehr, David Alexander Mitchell, Luiz Fernando de Lima Luz Jr, Nadia Krieger
Summary: The research focuses on reducing the cost of biodiesel production by producing lipases through solid-state fermentation. It utilizes a classical equation to describe the ethyl esterification of fatty acids catalyzed by DFS. The model validation shows that the two-site LHHW equation is suitable for techno-economic analyses of biodiesel production catalyzed by lipase-containing DFS.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Anelize Terezinha Jung Finkler, Luiz Fernando de Lima Luz Jr, Nadia Krieger, David Alexander Mitchell, Luiz Mario Jorge
Summary: Model-based strategies for scaling up traditional packed-bed bioreactors used in solid-state fermentation have been available for over two decades. However, these strategies are theoretical and not based on experimental data. A key strategy identified in the study is to decrease the temperature of the inlet air during periods of peak heat generation to optimize the performance of large-scale traditional packed-bed bioreactors.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Bruna R. Margarida, Luana I. Flores, Fabiane Hamerski, Fernando A. P. Voll, Luiz F. L. Luz
Summary: This study experimentally tested different acid-catalyzed esterification reaction conditions with varying water concentrations, proposing a new rate expression for the reaction kinetics in biodiesel production from waste oils. Process modifications such as energy-saving heat exchangers and ethanol-recycling distillation column were found to significantly reduce utility costs and raw material costs by 40% respectively, resulting in a payback period of less than 3 years in any evaluated scenario.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2021)
Article
Energy & Fuels
Maria Judite Dzuman, Ihana Aguiar Severo, Michelle Aparecida Coelho Moreira, Luiz Fernando de Lima Luz Junior, David Alexander Mitchell, Jose Viriato Coelho Vargas, Andre Bellin Mariano
Summary: This study aimed to investigate the effect of recycling microalgae culture medium on large-scale microalgae production. The results showed that the reuse of the medium can improve the biomass and lipid production, reduce costs, and generate high-quality feedstock for biofuel production.
BIOENERGY RESEARCH
(2022)
Article
Engineering, Environmental
Glauco Silva Dias, Luiz Fernando de Lima Luz, David Alexander Mitchell, Nadia Krieger
CHEMICAL ENGINEERING JOURNAL
(2017)