Article
Environmental Sciences
Seyit Uguz, Gary Anderson, Xufei Yang, Ercan Simsek, Augustina Osabutey
Summary: The concentration of animal feeding operations leads to air pollution, but using algae cultivation technology can effectively mitigate ammonia and carbon dioxide pollution. The results of the experiment show that the photo-bioreactor system can reduce air pollution in pig barns while producing valuable microalgae products.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Energy & Fuels
Masoud Derakhshandeh
Summary: This study applies a life cycle energy assessment to estimate the efficiency of different products derived from microalgae biomass as a bioenergy source. The authors found that the type of photobioreactor (PBR) used has a major impact on energy efficiency, with the raceway PBR achieving a net energy efficiency of 3.5 in the best scenario.
BIOENERGY RESEARCH
(2023)
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
S. Sivasangari, T. Vel Rajan, J. Nandhini
Summary: This study investigated the carbon dioxide fixation efficiency and biomass productivity of green algae Chlorella vulgaris grown in different concentrations of dairy wastewater supplemented with CO2. Cultivation was carried out at 25 degrees C with varying CO2-Air ratios of 5%, 10%, and 15%. The maximum carbon fixation efficiencies of 87.67 mg/l/day and 88.5 mg/l/d were achieved in suspended culture and algadisk, respectively, at a 15% CO2-Air ratio in undiluted dairy wastewater. The nutrient-rich wastewater not only served as a supplement for external nutrient supply but also facilitated nutrient removal from the dairy wastewater.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Engineering, Chemical
Laith S. Sabri, Abbas J. Sultan, Muthanna H. Al-Dahhan
Summary: This study evaluated the performance of a split internal loop photobioreactor for culturing green microalgae under different operating conditions and growth stages. Various parameters were assessed, and the hydrodynamics of the reactor with microalgae culture were comprehensively quantified. Experimental data obtained can be used to improve computational fluid dynamics codes and develop more efficient photobioreactors.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
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
Energy & Fuels
Ashwin Jacob, B. Ashok
Summary: This study aimed to synthesize amyl alcohol from sustainably cultivated microalgae biomass using reactor combinations and Ehrlich biosynthetic pathway. Experiments on a compression ignition engine showed significant fuel consumption reduction for the amyl alcohol-diesel mixture at medium-high load conditions.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Biotechnology & Applied Microbiology
Joao Salazar, Dimitar Valev, Juha Nakkila, Esa Tyystjarvi, Sema Sirin, Yagut Allahverdiyeva
Summary: This study investigated the feasibility of using microalgae for bioremediation of greenhouse effluents in Nordic countries. Through experiments, it validated a viable method for addressing nutrient overload in greenhouse effluents.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Engineering, Environmental
Bruna Porto, Tania F. C. V. Silva, Ana L. Goncalves, Ana F. Esteves, Selene M. A. Guelli U. De Souza, Antonio A. U. De Souza, Jose C. M. Pires, Vitor J. P. Vilar
Summary: This study proposes a novel configuration for tubular photobioreactors (PBRs) using specific light wavelength provided by LEDs. The use of reflectors and high-energy-efficient LEDs improves light utilization efficiency and photosynthetic activity. The results show that parabolic reflectors made of higher specular reflectance materials are the most efficient systems, and a distance of 50.0 mm between absorber tubes over the reflector leads to the best compromise between specific growth rates and biomass productivities.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Rocca C. Chin-On, Maria J. Barbosa, Rene H. Wijffels, Marcel Janssen
Summary: Microalgae are a promising renewable feedstock for various biobased products. To reduce production costs, a novel V-shaped photobioreactor is proposed to capture and dilute sunlight, thereby improving photosynthetic efficiencies and biomass productivities of microalgae.
CHEMICAL ENGINEERING JOURNAL
(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
Multidisciplinary Sciences
Mohammed Omar Faruque, Mohammad Mozahar Hossain, Shaikh Abdur Razzak
Summary: Microalgae Scenedesmus dimorphus was cultivated in synthetic wastewater media to investigate its bioenergy potential. Batch experiments with different CO2 concentrations were performed for biomass generation. The highest biomass production was achieved under different CO2 feed concentrations. Cultivation of microalgae with CO2 supplementation significantly impacted lipid buildup in the biomass. Physicochemical characterization revealed that the biomass had a high heating value and low sulfur content, making it a potential fuel feedstock for environmentally friendly bioenergy production.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Agricultural Engineering
Ombretta Paladino, Matteo Neviani
Summary: This study establishes the operational conditions of airlift photo-bioreactors (AL-PBRs) for Chlorella vulgaris cultivation in a pilot-scale Biowaste-to-Biofuels production plant, aiming for efficient utilization of waste resources in the production process.
BIOMASS & BIOENERGY
(2021)
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)
Article
Environmental Sciences
Ashutosh Pandey, Sameer Srivastava, Sanjay Kumar
Summary: This study used an airlift reactor to investigate the carbon dioxide fixation rate and lipid yield of Scenedesmus sp. ASK22, a unicellular green microalgae, using dairy effluent as a biofuel feedstock. The study revealed the impact of independent process parameters such as light intensity, CO2 concentration, and aeration rate on the carbon dioxide fixation rate and lipid yield. The optimal conditions were found to be a light intensity of -6.24 Klux, CO2 concentration of -14.03% (v v-1), and aeration rate of -1.02 liter per minute (LPM). Under these conditions, the lipid yield and carbon dioxide fixation rate were significantly higher than in the control experiment. The results suggest that Scenedesmus sp. ASK22 is a potential candidate for CO2 sequestration, biofuel production, and waste remediation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Biology
Gabriela Torres, David N. Thomas, Nia M. Whiteley, David Wilcockson, Luis Gimenez
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2020)
Article
Genetics & Heredity
Chris J. Hulatt, Rene H. Wijffels, Kiron Viswanath, Matthew C. Posewitz
MITOCHONDRIAL DNA PART B-RESOURCES
(2020)
Article
Biochemistry & Molecular Biology
Chris J. Hulatt, Irina Smolina, Adam Dowle, Martina Kopp, Ghana K. Vasanth, Galice G. Hoarau, Rene H. Wijffels, Viswanath Kiron
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2020)
Article
Geography, Physical
Mario Hoppmann, Maren E. Richter, Inga J. Smith, Stefan Jendersie, Patricia J. Langhorne, David N. Thomas, Gerhard S. Dieckmann
ANNALS OF GLACIOLOGY
(2020)
Article
Multidisciplinary Sciences
Diego R. Barneche, Chris J. Hulatt, Matteo Dossena, Daniel Padfield, Guy Woodward, Mark Trimmer, Gabriel Yvon-Durocher
Summary: The study quantified the effect of experimental warming on freshwater plankton in artificial ponds, finding that a 4 degrees C temperature increase can significantly decrease trophic transfer efficiency and reduce the biomass of phytoplankton and zooplankton. These changes indicate major shifts in energy uptake, transformation, and transfer in ecosystems, with implications for larger consumers and overall ecosystem functioning.
Article
Microbiology
Claire Evans, Joost Brandsma, Michael P. Meredith, David N. Thomas, Hugh J. Venables, David W. Pond, Corina P. D. Brussaard
Summary: In coastal waters of the Antarctic during the productive austral summer months, the relative flow of carbon through the viral shunt and the microbial loop plays a pivotal role in controlling secondary production and rates of nutrient remineralization and respiration. This study observed a general trend towards lower bacterioplankton and HNF abundances, but increased virioplankton concentration, with a corresponding decline in HNF grazing rates and a shift towards viral production indicating viral infection. Carbon flow through the viral shunt increased substantially from December to February, redirecting carbon flow towards recycling and increasing respiration and regeneration by the end of summer.
Article
Engineering, Environmental
Henry P. Huntington, Andrey Zagorsky, Bjorn P. Kaltenborn, Hyoung Chul Shin, Jackie Dawson, Maija Lukin, Parnuna Egede Dahl, Peiqing Guo, David N. Thomas
Summary: The changing Arctic Ocean is impacting Arctic societies and the global community, with threats to food security and culture for Indigenous Peoples, as well as new opportunities and challenges arising from resource development and tourism growth. Additionally, geopolitical tensions and economic shifts are emerging as interest in the Arctic increases.
Article
Biotechnology & Applied Microbiology
E. Eronen-Rasimus, J. Hultman, T. Hai, I. S. Pessi, E. Collins, S. Wright, P. Laine, S. Viitamaki, C. Lyra, D. N. Thomas, P. N. Golyshin, A-M Luhtanen, H. Kuosa, H. Kaartokallio
Summary: Poly-3-hydroxyalkanoic acids (PHAs) are bacterial storage polymers commonly used in bioplastic production, with halophilic bacteria showing promise due to their salinity tolerance and psychrophilic nature. Two sea-ice bacteria, Halomonas sp. 363 and Paracoccus sp. 392, have been shown to produce a variety of PHA types from inexpensive carbon sources, with Halomonas sp. 363 possessing three synthesis pathways to produce short- and medium-chain-length PHAs.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Evolutionary Biology
Chris J. Hulatt, Rene H. Wijffels, Matthew C. Posewitz
Summary: Haptophytes are important protists with underexplored genomic diversity. A nuclear genome assembly for the class Pavlovales has been successfully assembled, with Diachronema lutheri identified as having the smallest and most streamlined haptophycean genome. This genome provides valuable insights for investigating selective pressures on haptophyte genome evolution and the genetic basis of algal lipid biosynthesis.
GENOME BIOLOGY AND EVOLUTION
(2021)
Editorial Material
Engineering, Environmental
Erik Andersson, Wiebren J. Boonstra, Maricela de la Torre Castro, Alice C. Hughes, Ulrik Ilstedt, Arne Jernelov, Bengt-Gunnar Jonsson, Zahra Kalantari, Carina Keskitalo, Emma Kritzberg, Thomas Katterer, Jeffrey A. McNeely, Claudia Mohr, Tero Mustonen, Madelene Ostwald, Victoria Reyes-Garcia, Graciela M. Rusch, Angelina Sanderson Bellamy, Jesper Stage, Michael Tedengren, David N. Thomas, Angela Wulff, Bo Soderstrom
Editorial Material
Engineering, Environmental
David N. Thomas, Damian L. Arevalo-Martinez, Kirsty C. Crocket, Fabian Grosse, Julia Grosse, Kirstin Schulz, Roxana Suhring, Allyson Tessin
Article
Biology
Federica Manca, Clelia Mula, Camilla Gustafsson, Achille Mauri, Tomas Roslin, David N. Thomas, Lisandro Benedetti-Cecchi, Alf Norkko, Giovanni Strona
Summary: Network theory provides innovative tools to explore complex ecological mechanisms regulating species associations and interactions. However, the application of network approaches is unevenly distributed across different study systems, with aquatic macrophyte-animal associations in coastal environments being largely neglected. Network analysis has the potential to broaden our understanding of coastal ecosystems and their response to anthropogenic disturbance and environmental change.
BIOLOGICAL REVIEWS
(2022)
Article
Engineering, Environmental
Zina Kebir, Catherine Chambers, Andre Frainier, Vera Hausner, Ann Eileen Lennert, Jennifer Lento, Amanda Poste, Virve Ravolainen, Angelika H. H. Renner, David N. Thomas, Kerry Waylen
Summary: There is an urgent need to understand and address the risks associated with a warming climate for ecosystems and societies in the Arctic and sub-Arctic regions. Major gaps in understanding climate change effects and the need for collaborative efforts to resolve them were identified by a panel of scientists and practitioners in the Norwegian High North.
Article
Microbiology
Hirono Suzuki, Alexandre Detain, Youngjin Park, Kiron Viswanath, Rene H. Wijffels, Nathalie Leborgne-Castel, Lenka Prochazkova, Chris J. Hulatt
Summary: Snow algae blooms in melting snowfields are poorly understood in terms of their biology, biogeography, and species diversity. This study investigated eight isolates from red snow in northern Norway using morphology and genetic markers. Six isolates were assigned to known species, while two isolates were potentially new species. Further experiments revealed differences in growth rate and fatty acid profiles among strains, as well as the accumulation of lipids under physiological stress. This study provides new insights into the biodiversity and biogeography of snow algae, as well as their physiological traits and ecological properties.
FEMS MICROBIOLOGY ECOLOGY
(2023)
Article
Microbiology
Tatyana N. Chernikova, Rafael Bargiela, Stepan V. Toshchakov, Vignesh Shivaraman, Evgenii A. Lunev, Michail M. Yakimov, David N. Thomas, Peter N. Golyshin
FRONTIERS IN MICROBIOLOGY
(2020)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
