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
Energy & Fuels
Changlei Xia, Abhijeet Pathy, Balasubramanian Paramasivan, Prabakaran Ganeshan, Kondusamy Dhamodharan, Ankita Juneja, Deepak Kumar, Kathirvel Brindhadevi, Sang-Hyoun Kim, Karthik Rajendran
Summary: This paper reviews different thermochemical conversion technologies for renewable and sustainable biofuel production from algal biomass, including pyrolysis and hydrothermal liquefaction. Fast pyrolysis and microwave-assisted pyrolysis are found to be efficient processes, while hydrothermal liquefaction is the most energy-efficient option. Process temperature is identified as the critical parameter affecting product yield.
Article
Biotechnology & Applied Microbiology
Zhen Zhu, Huijiao Cao, Xu Li, Junfeng Rong, Xupeng Cao, Jing Tian
Summary: The engineered strain of Chlamydomonas reinhardtii, named P3-GAPDH, overexpressing chloroplast type glyceraldehyde-3-phosphate dehydrogenase (cGAPDH), showed enhanced Calvin cycle, promoting carbon conversion and subsequent energy storage compounds accumulation, indicating high carbon conversion ability.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Energy & Fuels
Srijoni Banerjee, Dipankar Ghosh, Chetan Pandit, Sagnik Saha, Anwesha Mohapatra, Soumya Pandit, Minaxi Sharma, Kandi Sridhar, Baskaran Stephen Inbaraj, Ram Prasad
Summary: Microalgae have shown great potential as a prominent source for biomass production in the production of biofuels and bioenergy. They are capable of producing high yields of biomass and fuel while occupying smaller land footprints. Additionally, microalgae can be utilized in wastewater treatment and the generation of bioelectricity.
Article
Agricultural Engineering
Deepesh Singh Chauhan, Lingaraj Sahoo, Kaustubha Mohanty
Summary: This study investigates the impact of temperature and light on the ability of Microactinium pusillum microalgae to mitigate CO2 and produce bioenergy. It is found that a temperature of 25°C and light intensities of 350 and 650μmol m-2 s-1 result in the maximum growth rate, while 15°C temperature and 50μmol m-2 s-1 light intensity reduce growth. Increased light intensity accelerates growth, CO2 utilization, and bioenergy accumulation. Microalgae exhibit rapid metabolic adjustment and acclimation reactions in response to changes in light and temperature conditions. Temperature correlates positively with carbon and nitrogen fixation, CO2 fixation, and carbon accumulation, while no correlation is found with light. Higher light intensity in the temperature regime experiment enhances nutrient and CO2 utilization, carbon buildup, and biomass bioenergy.
BIORESOURCE TECHNOLOGY
(2023)
Review
Microbiology
Zhi Zhu, Jing Sun, Yun Fa, Xufeng Liu, Peter Lindblad
Summary: Microalgae have the potential to produce biofuels, but high production costs hinder commercialization. Enhancing lipid accumulation through genetic modifications and optimization strategies can improve the economics of microalgal biofuel production. This review discusses the application of multiple molecular strategies to construct high performance microalgal strains and optimize processes for enhanced lipid accumulation, while emphasizing the opportunities and challenges of strategic integration.
FRONTIERS IN MICROBIOLOGY
(2022)
Review
Green & Sustainable Science & Technology
Merrylin Jayaseelan, Mohamed Usman, Adishkumar Somanathan, Sivashanmugam Palani, Gunasekaran Muniappan, Rajesh Banu Jeyakumar
Summary: Developing sustainable biofuels is essential for reducing human impacts on air and water quality, and decreasing the use of fossil fuels. Using microalgae to treat wastewater and produce biofuels simultaneously is a promising approach, with the potential to minimize costs and environmental hazards by utilizing nutrients and water already present in wastewater.
Article
Environmental Sciences
Mohd Jahir Khan, Harish, Ankesh Ahirwar, Benoit Schoefs, Arivalagan Pugazhendhi, Sunita Varjani, Karthik Rajendran, Shashi Kant Bhatia, Ganesh Dattatraya Saratale, Rijuta Ganesh Saratale, Vandana Vinayak
Summary: Wastewater can be effectively treated by growing microalgae in it, which not only reduces costs but also increases the production of value-added products. Ultrasonication pre-treatment of microalgal biomass allows for easier extraction of secondary metabolites at lower cost, especially with diatoms, which contain various valuable products.
ENVIRONMENTAL RESEARCH
(2021)
Article
Agricultural Engineering
Anshu Priya, Shifa Naseem, Deepshikha Pandey, Anisha Bhowmick, Mustafa Attrah, Kasturi Dutta, Eldon R. Rene, Sunil Kumar Suman, Achlesh Daverey
Summary: The utilization of algal biomass for biohydrogen production faces challenges due to the complex cell wall composition, requiring additional pretreatment. Conventional pretreatment strategies have limited feasibility and economic viability. This review discusses the structural complexities of algal cell walls and highlights innovative approaches such as hybrid technologies, biosurfactants, nanoparticles, and genetic engineering for improved hydrolysis and biohydrogen production. It also provides a comprehensive evaluation of various pretreatment methods and techno-economic and life cycle assessment of algal biohydrogen production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Niels-Henrik Norsker, Maria Cuaresma, Pauliina Uronen, Maria J. Barbosa, Rene Wijffels
Summary: This paper describes the preparations for developing oil-rich microalgal biomass production under South European conditions. Ten microalgal species were compared for their potential oil production capacity, with TFA concentration ranging from 5 to 40% DW and TFA productivity rate ranging from 0 to 204 mg TFA L-1 day(-1). The study also proposed a quadratic equation to predict TFA concentration based on biomass inverse nitrogen quota, and developed a concentrated substrate from natural sea-salt and tap water for the oil enrichment process in outdoor microalgal batch culture.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Mark Henry Loria, George Fraser Wells, Kurt Ryan Rhoads
Summary: MaB flocs, formed by different algal and bacterial ratios, showed varying effects on nutrient removal and lipid content, with Chlorella vulgaris demonstrating the highest lipid content and Scenedesmus dimorphus showing the best phosphorus removal efficiency.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Environmental Sciences
Yedong Gao, Liang Guo, Qianru Liao, Zengshuai Zhang, Yangguo Zhao, Mengchun Gao, Chunji Jin, Zonglian She, Guangce Wang
Summary: This study demonstrates that under 5000 lux light intensity, microalgae showed the highest biomass productivity and efficient removal of COD, ammonia-nitrogen, and total phosphorus from mariculture wastewater. Under mixotrophic cultivation, microalgae exhibited a coordinated photosynthesis and heterotrophic metabolism, resulting in effective nutrient removal. This indicates the potential of microalgae in the treatment of mariculture wastewater.
ENVIRONMENTAL RESEARCH
(2021)
Review
Environmental Sciences
Jingyan Hu, Weizhao Meng, Yixi Su, Cheng Qian, Weiqi Fu
Summary: Microalgae play a vital role in primary production and have diverse applications in various industries. However, the practical applications of microalgae are limited to high-value products due to high production costs. To enhance their production efficiency, strategies such as strain selection, genetic modification, and innovative technologies can be employed. Additionally, metabolic engineering can optimize the synthesis of valuable metabolites in microalgae. Overcoming limitations in production costs can lead to broader applications in various industries.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Sukanya Chakraborty, Vandana Sirotiya, Anshuman Rai, Sunita Varjani, Vandana Vinayak
Summary: Microalgae, especially diatoms, are considered as rich sources of crude oil for biofuel production. However, there are limitations for the entry of such biofuel into the commercial market due to various factors. High yield and low cost of production are crucial for selecting microalgae for biofuel production. Catalysts play an important role in the transesterification process to form biofuels, and their cost and availability need to be considered for large-scale, economical biofuel production towards green vehicles with zero carbon footprint and pollution.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Review
Plant Sciences
Donna L. Sutherland, Peter J. Ralph
NEW ZEALAND JOURNAL OF BOTANY
(2020)
Article
Biodiversity Conservation
Donna L. Sutherland, Clive Howard-Williams, Peter Ralph, Ian Hawes
Article
Plant Sciences
Lingling Zhu, Keith J. Bloomfield, Shinichi Asao, Mark G. Tjoelker, John J. G. Egerton, Lucy Hayes, Lasantha K. Weerasinghe, Danielle Creek, Kevin L. Griffin, Vaughan Hurry, Michael Liddell, Patrick Meir, Matthew H. Turnbull, Owen K. Atkin
Summary: Short-term temperature response curves of leaf dark respiration provide insights into how plant respiratory traits acclimate to changing environmental conditions. The study shows that thermal acclimation of leaf respiration is common in most biomes, with the threshold of respiration adjusting in response to warmer climates.
Review
Environmental Sciences
Luong N. Nguyen, Jeevan Kumar, Minh T. Vu, Johir A. H. Mohammed, Nirenkumar Pathak, Audrey S. Commault, Donna Sutherland, Jakub Zdarta, Vinay Kumar Tyagi, Long D. Nghiem
Summary: Anaerobic co-digestion (AcoD) and biogas upgrade have enabled many wastewater treatment plants to become net energy producers. While water scrubbing is currently the most widely used technology, significant market growth in membrane separation has been observed, with further advancements in materials engineering and sciences expected to enhance membrane separation competitiveness in biogas upgrading.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Donna L. Sutherland, Joel Burke, Peter J. Ralph
Summary: The diversion of food waste from landfill to waste-to-energy facilities is a viable option for supporting the circular bioeconomy. However, liquid centrate produced during anaerobic digestion is high in total ammonia, necessitating further treatment before discharge. Utilizing microalgal wastewater treatment systems augmented with CO2 can effectively reduce total ammonia concentrations and ammonia volatilisation. Increasing CO2 levels and hydraulic retention time can impact nitrogen losses, biomass productivity, and effluent quality in the system.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Soil Science
Jonathan Nunez, Gabriel Y. K. Moinet, Scott L. Graham, Matthew H. Turnbull, Gwen-Aelle Grelet, David Whitehead
Summary: The addition of sorptive mineral phases to soils can rapidly and proportionally reduce soil organic matter (SOM) decomposition, leading to decreased microbial access to SOM. This effect occurs independently of soil organic carbon concentration and pH, suggesting a universal impact on SOM stability.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Donna L. Sutherland, Peter J. Ralph
Summary: The study revealed that wild marine microalgal consortia perform better in terms of biomass and protein yield at higher ammoniacal nitrogen loads, but with lower carbohydrate production. The community composition shifted as ammonia levels increased.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Donna L. Sutherland, Peter J. Ralph
Summary: Microalgae are recognized as valuable feedstock for novel product production and biotechnological applications, but the high costs associated with their culturing and harvesting present major challenges. Mixotrophy and heterotrophy are seen as potentially cost-effective growth strategies, but the response of microalgae to these alternative strategies varies between species. This study evaluated the response of four related species to different growth conditions, showing variability in biomass production, lipid and protein content, and coenobium size and total numbers. Performance of microalgae under alternative growth strategies is species-dependent, highlighting the need to assess optimal growth strategies for each species in commercial applications.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Donna L. Sutherland, Peter J. Ralph
Summary: Hydraulic retention time (HRT) in high rate algal ponds affects both nutrient loading and effluent quality. Shorter HRT increases nutrient loading and microalgal productivity, but decreases effluent quality. Recycling effluent can decrease HRT while maintaining nutrient loading, potentially increasing microalgal biomass production without degrading effluent quality.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biochemical Research Methods
Andrei Herdean, Donna L. Sutherland, Peter J. Ralph
Summary: The Phenoplate approach allows simultaneous assessment of temperature and light gradients for evaluating the physiological impact of multiple factors on photosynthetic organisms. Rapid light curves reveal differences in photoprotective mechanisms at different temperatures.
Article
Biochemical Research Methods
Donna L. Sutherland, Joel Burke, Peter J. Ralph
Summary: Microalgae produce valuable organic compounds and are increasingly being used in novel product production and biotechnological applications. A high-throughput method using a cost-effective Biolog plate was evaluated for rapid screening of microalgal metabolism, with good agreement found between Biolog plate results and traditional culture techniques. High-throughput assessments like this can be useful tools for selecting species, determining metabolic capacity, and establishing optimal culture conditions for microalgal biotechnology applications.
Article
Biotechnology & Applied Microbiology
Donna L. Sutherland, Jason Park, Peter J. Ralph, Rupert Craggs
Summary: The study found that high rate algal ponds generally exhibited net autotrophy, with microalgal photosynthetic production exceeding respiratory organic matter consumption. pH had a negative influence on ecosystem respiration, with respiration rates increasing with diurnal pH. Additionally, free ammonia concentration reduced gross primary production rates.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Engineering, Environmental
Donna L. Sutherland
Summary: This study investigated the effects of glucose addition on toxicity in three microalgal species. The results showed that glucose reduced ammonia toxicity and increased growth rate and biomass yield. The carbon to nitrogen ratio played an important role in maximizing tolerance, but varied with species, ammonia concentration, and parameter measured. The addition of glucose was effective at reducing ammonia toxicity and improving microalgal wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Water Resources
Scott T. Larned, Clive Howard-Williams, Ken Taylor, Mike Scarsbrook
Summary: This paper addresses the challenges of freshwater science-policy interactions in New Zealand and proposes five recommendations to improve policy development.
AUSTRALASIAN JOURNAL OF WATER RESOURCES
(2022)
Article
Environmental Sciences
Donna L. Sutherland, Anna Bramucci
Summary: This study assessed the potential of wastewater microalgae for the bioremediation of dissolved organic phosphorus (DOP). The results showed that microalgae were able to efficiently remove DOP, but the effectiveness was reduced under a 1:1 ratio of DOP to inorganic phosphorus (DIP). Alkaline phosphatase, the enzyme responsible for phosphorus hydrolysis, was found to be produced by all microalgal species to different extents. The study also revealed variations in DOP removal rates among different microalgal species.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
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)
