Article
Agricultural Engineering
Ilknur Alibas, Aslihan Yilmaz, Kamil Alibas, Murat Arslan, Caner Koc
Summary: Seven microalgae species were dried using four different drying methods, and biodiesel was produced from the dried microalgae. The highest vegetable oil yield and biodiesel yield were obtained in Schizochytrium dried by spray technique. The microwave drying method resulted in the lowest cloud point for Botryococcus braunii and the highest pour point and freezing point for Chlorella variabilis. Schizochytrium and Nitzschia were found to be the most suitable microalgae species for biodiesel production. Among the drying methods, spray drying produced the most successful results for biodiesel production from Schizochytrium.
BIOMASS & BIOENERGY
(2023)
Article
Environmental Sciences
Shengbo Ge, Arivalagan Pugazhendhi, Manigandan Sekar, Changlei Xia, Ashraf Elfasakhany, Kathirvel Brindhadevi, Kanda Whangchai
Summary: The study demonstrates that using Schizochytrium microalgae bio-oil as biofuel for diesel engines shows improved performance in terms of fuel efficiency and reduced harmful gas emissions, except for NOX which is slightly higher than diesel. Overall, the differences between them are negligible.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Wai Hong Leong, Nur Afiqah Mohamad Saman, Worapon Kiatkittipong, Suttichai Assabumrungrat, Vesna Najdanovic-Visak, Jiawei Wang, Kuan Shiong Khoo, Man Kee Lam, Mardawani Mohamad, Jun Wei Lim
Summary: The performances of autotrophic and heterotrophic metabolisms in Chlorella vulgaris were evaluated under various photoperiod conditions. The study found that a mixotrophic treatment, alternating autotrophic and heterotrophic metabolisms, resulted in high biomass and lipid production. Prolonging light and dark conditions favored biomass growth and lipid content, respectively.
Article
Energy & Fuels
Shengbo Ge, Kathirvel Brindhadevi, Changlei Xia, Amany Salah Khalifa, Ashraf Elfasakhany, Yuwalee Unpaprom, Hien Van Doan
Summary: The study focused on improving the performance and emulsion characteristics of biodiesel extracted from spirulina microalgae by adding a small dosage of Al2O3 nanoparticles as a catalyst. The results showed that the nanoparticles added to biodiesel reduced harmful gas emissions, improved combustion quality, and increased fuel efficiency compared to pure diesel blends.
Article
Environmental Sciences
K. Rohitha Thangam, A. Santhiya, S. R. Abinaya Sri, D. MubarakAli, S. Karthikumar, R. Shyam Kumar, N. Thajuddin, Michael Rahul Soosai, P. Varalakshmi, I. Ganesh Moorthy, Arivalagan Pugazhendhi
Summary: The study utilized biorefinery approaches for the coupled process of phycoremediation and biofuel production using freshwater microalgae. Scenedesmus sp. was able to utilize various nutrients in domestic wastewater for growth, contributing to wastewater treatment and biomass production. The production included lipid and bioethanol, with various techniques such as FT-IR and GC-MS used for analysis.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Green & Sustainable Science & Technology
Nongmaithem Debeni Devi, Angana Chaudhuri, Vaibhav V. Goud
Summary: This review discusses an innovative biofilm cultivation system for microalgae that aims to reduce the cost of biomass recovery and processing. It outlines two main cultivation strategies and highlights the influence of physicochemical parameters on microalgae growth.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Chemical
Eyad Sowan, Mohammad Sayem Mozumder, Hanifa Taher, Sulaiman Al-Zuhair
Summary: Although there is increasing interest in biodiesel production from microalgae, the high cost of multistage production processes is still a barrier to its commercialization. This review thoroughly discusses conventional methods of biodiesel production from microalgae and compares them to state-of-the-art technologies, with particular emphasis on the use of biocatalysts as alternative catalysts. Challenges and innovative solutions in the biocatalytic process are also presented, with a focus on in-situ biodiesel production processes that show promise for industrial application.
CHEMBIOENG REVIEWS
(2023)
Article
Biotechnology & Applied Microbiology
Nicolo Fattore, Alessandra Bellan, Luca Pedroletti, Nicola Vitulo, Tomas Morosinotto
Summary: This study found that the microalgae Nannochloropsis gaditana can acclimate to chronic nitrogen or phosphorus limitation by accumulating lipids without inducing fatty acid synthesis but by modulating carbon flux towards lipid biosynthesis, maintaining photosynthetic activity. Moreover, photosynthetic activity was maintained under phosphorus limitation but was strongly affected by nitrogen depletion.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Agricultural Engineering
Hao Guo, Jun Cheng, Yuxiang Mao, Lei Qian, Weijuan Yang, Ji-Yeon Park
Summary: In this study, ultrasound-assisted TEPDA was used to destruct the thick cell wall of Nannochloropsis oceanica, reducing cell wall thickness and achieving efficient lipid extraction.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Xiang Li, Chunping Yang, Yan Lin, Tianjue Hu, Guangming Zeng
Summary: This study investigated the removal of nutrients from swine wastewater digester effluent (SWDE) by microalgae Coelastrella sp. and the production of Coelastrella sp. in the presence of oxytetracycline (OTC) and zinc (II). The mechanisms of OTC and zinc (II) stress on microalgae were discussed by analyzing the removal performance of SWDE and biochemical characteristics of microalgae. The results showed that the presence of zinc (II) decreased the removal efficiency of ammonia nitrogen and biomass yield of microalgae in the presence of OTC. The presence of zinc (II) also promoted the accumulation of lipids in microalgae, while the presence of OTC increased the unsaturation of fatty acid methyl ester.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
Alireza Farrokheh, Kambiz Tahvildari, Maryam Nozari
Summary: In this study, biodiesel was produced from two sea microalgae strains using the electrolysis method and magnetic nanocatalysts. The effects of different factors on biodiesel production efficiency and quality were investigated, and Chlorella vulgaris microalgae and KF/KOH-Fe(3)O(4) were found to be the optimal choices. The prepared biodiesel met the world standard and showed high process yield.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Agricultural Engineering
Josef Marousek, Anna Marouskova, Beata Gavurova, David Tucek, Otakar Strunecky
Summary: The aim of this review was to explore the reasons why algae biodiesel is still not price competitive with fossil fuels despite significant investments in research and development. The study found that microalgal production accounts for a large proportion (84% to 93%) of the overall cost of biodiesel production, regardless of the technology used. The key factors impacting cost during mass cultivation were identified as light and oxygen concentration management, as well as overnight respiratory loss of oil. The review concluded that most of the research on microalgae biodiesel has been based on laboratory experiments with limited interdisciplinary overlap, resulting in economically over-optimistic assumptions.
BIORESOURCE TECHNOLOGY
(2023)
Review
Biotechnology & Applied Microbiology
Reeza Patnaik, Nirupama Mallick
Summary: Despite years of research on microalgal biodiesel, its economic, environmental, and social sustainability is yet to be definitively established. This article reviews the current status and strategies of microalgal biodiesel, with suggestions to address the challenges faced by the production system.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
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
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
Agronomy
I. I. Vaseva, G. Zehirov, E. Kirova, L. Simova-Stoilova
CEREAL RESEARCH COMMUNICATIONS
(2016)
Review
Plant Sciences
I. I. Vaseva, F. Vandenbussche, D. Simon, K. Vissenberg, D. Van Der Straeten
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
(2016)
Article
Multidisciplinary Sciences
Irina Ivanova Vaseva, Enas Qudeimat, Thomas Potuschak, Yunlong Du, Pascal Genschik, Filip Vandenbussche, Dominique Van Der Straeten
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
Article
Plant Sciences
Veselin Stoychev, Lyudmila Simova-Stoilova, Irina Vaseva, Anelia Kostadinova, Rosa Nenkova, Urs Feller, K. Demirevska
ACTA PHYSIOLOGIAE PLANTARUM
(2013)
Article
Plant Sciences
Irina Ivanova Vaseva, Iwona Anders, Urs Feller
JOURNAL OF PLANT PHYSIOLOGY
(2014)
Article
Plant Sciences
Irina Ivanova Vaseva, Iwona Anders, Bistra Yuperlieva-Mateeva, Rosa Nenkova, Anelia Kostadinova, Urs Feller
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2014)
Article
Plant Sciences
Valentin Velinov, Irina Vaseva, Grigor Zehirov, Miroslava Zhiponova, Mariana Georgieva, Nick Vangheluwe, Tom Beeckman, Valya Vassileva
FRONTIERS IN PLANT SCIENCE
(2020)
Article
Plant Sciences
Irina I. Vaseva, Kiril Mishev, Thomas Depaepe, Valya Vassileva, Dominique Van Der Straeten
Summary: The study found that the ethylene-signaling mutant ctr1-1 showed less negative effects under high salt stress due to enhanced auxin signaling, while the ethylene-insensitive mutant ein2-1 exhibited depletion in active auxins. The continuously operating ethylene-signaling pathway may be associated with increased auxin biosynthesis in ctr1-1.
Article
Plant Sciences
Irina I. Vaseva, Lyudmila Simova-Stoilova, Elisaveta Kirova, Kiril Mishev, Thomas Depaepe, Dominique Van Der Straeten, Valya Vassileva
Summary: A comparative study of Arabidopsis thaliana wild type, ethylene insensitive, and constitutive signaling mutant plants revealed that ethylene-mediated molecular mechanisms play a crucial role in the acclimation response to salt stress through the regulation of free proline accumulation and enhanced ROS scavenging.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Agronomy
Irina I. Vaseva, Lyudmila Simova-Stoilova, Anelia Kostadinova, Bistra Yuperlieva-Mateeva, Tania Karakicheva, Valya Vassileva
Summary: The effects of a commercially available protein-hydrolysate-based biostimulant, Kaishi, on the growth and heat stress response of maize plants were investigated. It was found that Kaishi promoted shoot and root growth, mitigated the negative effects of heat stress on biomass and leaf pigments, and induced changes in gene expression related to stress response.
Article
Biochemistry & Molecular Biology
Irina I. Vaseva, Margarita Petrakova, Ana Blagoeva, Dessislava Todorova
Summary: The study evaluated the cross-adaptation of wheat and triticale exposed to drought and waterlogging after treatment with the selective herbicide Serrate((R), Syngenta). The herbicide had ambivalent effects on the two crops, with a significant reduction in wheat growth and better performance in triticale individuals. Histochemical staining confirmed increased ROS accumulation in flooded wheat plants, persisting in the younger leaves of the recovered individuals. Transcript profiling revealed crop-specific variations in ROS scavenging enzymes due to the combination of unfavorable water regimes and herbicide treatment. Short-term dehydration was well tolerated by triticale, but its drought resilience was diminished by herbicide application.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Elzbieta Jankovska-Bortkevic, Sigita Jurkoniene, Virgilija Gaveliene, Vaidevutis Sveikauskas, Rima Mockeviciute, Irina Vaseva, Dessislava Todorova, Marija Zizyte-Eidetiene, Donatas Sneideris, Petras Prakas
Summary: The impact of increasing cold stress conditions on polyamines, proline, and ethylene metabolism in acclimated and non-acclimated winter oilseed rape was investigated in this study. A decrease in putrescine, spermidine, and spermine content during cold acclimation and at sub-zero temperatures was observed. Intensive changes in ADC2 gene expression, proline, and ethylene levels were seen in non-acclimated plants, with a substantial increase after exposure to -1 °C temperature and a sharp decrease after exposure to -3 °C temperature. These changes were lower or absent in acclimated plants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Valya Vassileva, Irina Vaseva, Anna Dimitrova
BULGARIAN JOURNAL OF AGRICULTURAL SCIENCE
(2019)
Review
Environmental Sciences
Urs Feller, Irina I. Vaseva
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2014)
Article
Biochemistry & Molecular Biology
Irina I. Vaseva, Urs Feller
PLANT SIGNALING & BEHAVIOR
(2013)
