Article
Green & Sustainable Science & Technology
Emrah Sagir, Siamak Alipour
Summary: The article discusses the importance of hydrogen energy as a clean, versatile, and alternative energy source to replace fossil fuels in the future, with a particular emphasis on the environmental advantages of biological immobilization in the production of photofermentative biological hydrogen. It also explores research on key factors affecting hydrogen production in immobilized systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Anjana Pandey, Pallavi Sinha, Ashutosh Pandey
Summary: In this study, the potential of Spirulina platensis hydrolysate as a substrate for biohydrogen production through sequential fermentative and photofermentative processes was evaluated. Response Surface Methodology was used to determine the optimal photofermentation conditions. The experiments showed that factors such as pH, dilution fold of fermentate, and Fe(II) sulfate concentration significantly affected hydrogen production, with promising results obtained under specific conditions in the second stage experiment.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jan-Pierre du Toit, Robert W. M. Pott
Summary: This study evaluated the growth and hydrogen productivity of two strains of R. palustris acclimated to higher temperatures, showing significantly increased optimisation effects at 35°C and 40°C. The results highlight the importance of pre-acclimation for verifying temperature optima and expand the feasible temperature range for high-rate biohydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biotechnology & Applied Microbiology
Catharine Elizabeth Bosman, Robert William McClelland Pott, Steven Martin Bradshaw
Summary: This study evaluates the use of a thermosiphon photobioreactor (TPBR) for photofermentative hydrogen production. The results show that biomass concentration has a significant impact on hydrogen production and biomass suspension. The optimal operating conditions were determined using response surface methodology, and maximum specific hydrogen production rates and biomass suspension rates were predicted.
BIOENGINEERING-BASEL
(2022)
Review
Energy & Fuels
Jey-R S. Ventura, Saul M. Rojas, Ruby Lynn G. Ventura, Fidel Rey P. Nayve, Nacita B. Lantican
Summary: Fossil fuel consumption leads to resource depletion and climate change, prompting a global interest in alternative energy sources, with a focus on biological fermentation for hydrogen production. The Philippines' agricultural abundance positions it as a promising candidate for biohydrogen production from biomass, including various agricultural wastes.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Physical
Brandon Sean Ross, Robert W. M. Pott
Summary: Biohydrogen production via photofermentation has low environmental impact and can be integrated into wastewater treatment systems. However, current production rates are low compared to industrial processes, requiring improvement. One strategy for enhancing productivity is the development of improved photobioreactor systems. This study compared hydrogen productivity of Rhodopseudomonas palustris under different cell conditions, with the fluidized bed PBR achieving the highest specific hydrogen production rate and substrate conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biotechnology & Applied Microbiology
Catharine Elizabeth Bosman, Robert William McClelland Pott, Steven Martin Bradshaw
Summary: One of the main factors affecting hydrogen production and growth of photofermentative microorganisms is light. This study investigated light distribution in a thermosiphon photobioreactor and evaluated a reflector system for enhancing light distribution. Experimental results showed that the addition of the reflector system increased hydrogen production by 48% and glycerol consumption from 24% to 32%. These findings suggest that the reflector system is a viable option for enhancing light distribution in photobioreactors, leading to increased hydrogen production and glycerol consumption.
JOURNAL OF BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Chayanika Putatunda, Manya Behl, Preeti Solanki, Samriti Sharma, Shashi Kant Bhatia, Abhishek Walia, Ravi Kant Bhatia
Summary: Biohydrogen is considered a versatile future fuel that can replace fossil fuels in various sectors, and photofermentation is an attractive approach due to its efficiency and reduced environmental impacts. However, there are still significant challenges in commercial biohydrogen production through photofermentation. This review provides updated information on new technologies and discusses the prospects for the future of green biohydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Dahbia Akroum-Amrouche, Hamza Akroum, Hakim Lounici
Summary: This paper reviews the photo-fermentative biohydrogen production using Rhodobacter sphaeroides, a promising technology, and discusses several strategies to improve its economic efficiency, cost-effectiveness, and productivity. The use of co-cultures and genetic modification techniques have been shown to enhance the yield and rate of hydrogen production. Additionally, employing organic wastes as substrates in various reactor designs has been proven to achieve high conversion efficiency of the substrate and light energy.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Review
Multidisciplinary Sciences
Cristian A. A. Sepulveda-Munoz, Ignacio de Godos, Raul Munoz
Summary: Piggery wastewater is characterized by high concentrations of organic matter and ammonium, as well as odour nuisance. Photosynthetic microorganisms such as purple phototrophic bacteria (PPB) and microalgae have been found to be effective in sustainable wastewater treatment using engineered photobioreactors, with low operating costs and efficient recovery of carbon, nitrogen and phosphorous.
Review
Energy & Fuels
Fariha Kanwal, Angel A. J. Torriero
Summary: Energy plays a crucial role in sustainable development and hydrogen is considered the most promising alternative fuel. This paper provides an updated review of biohydrogen production using different waste materials and examines the role of nanotechnology in enhancing biohydrogen production.
Article
Agricultural Engineering
Siyi Guo, Chaoyang Lu, Kaixin Wang, Jian Wang, Zhiping Zhang, Hong Liu, Yanyan Jing, Quanguo Zhang
Summary: The effect of citrate buffer on biohydrogen production using photosynthetic bacteria was studied. It was found that the citrate buffer had a significant impact on the pH of the reaction liquid, and adjusting the pH can improve the biohydrogen yield.
BIORESOURCE TECHNOLOGY
(2022)
Review
Energy & Fuels
Yingji Wu, Changlei Xia, Jiajie Cao, Hakim AL Garalleh, Mazen Garaleh, Mohammed Khouj, Arivalagan Pugazhendhi
Summary: Biofuel is a leading alternative to fossil fuels due to the depletion of energy sources. Nanoparticles acting as catalysts have shown potential in improving the quality and yield of biofuel. With improved processing, the reliance on fossil fuels can be significantly reduced. Various nanoparticles, such as organic and inorganic metals, have been applied to improve biofuel fabrication.
Article
Chemistry, Physical
Heshan Zheng, Yu Wang, Xiaochi Feng, Shuo Li, Yoong Kit Leong, Jo-Shu Chang
Summary: This paper reviews the recent progress in bio-hydrogen production from straw, focusing on the advancements in pretreatment and hydrolysis technologies. Various pretreatment procedures have been developed to enhance the availability of straw substrate for hydrogen-producing bacteria, enabling large-scale bio-hydrogen production. The challenges, prospects, and future directions of straw-based biohydrogen production are also discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Agricultural Engineering
Apilak Salakkam, Sureewan Sittijunda, Chonticha Mamimin, Orawan Phanduang, Alissara Reungsang
Summary: This article discusses the potential of third generation biomass, microalgae, as a promising alternative for biohydrogen production. It provides a detailed overview of algal strains, cultivation, harvesting, pretreatment of microalgal biomass, and biohydrogen production methods. Additionally, factors affecting fermentation processes performance and the use of molecular techniques in biohydrogen production are addressed, along with challenges and future prospects in this field.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Tugba Keskin, Kubra Arslan, Haris Nalakth Abubackar, Cansu Vural, Didem Eroglu, Duygu Karaalp, Jale Yanik, Guven Ozdemir, Nuri Azbar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Physical
Gozde Duman, Koray Akarsu, Alper Yilmazer, Tugba Keskin Gundogdu, Nuri Azbar, Jale Yanik
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Environmental Sciences
Tugba Keskin, Kubra Arslan, Duygu Karaalp, Nuri Azbar
WASTE AND BIOMASS VALORIZATION
(2019)
Review
Biotechnology & Applied Microbiology
Tugba Keskin Guendogdu, Irem Deniz, Guelizar Caliskan, Erdem Sefa Sahin, Nuri Azbar
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2016)
Article
Chemistry, Physical
Haris Nalakath Abubackar, Tugba Keskin, Okyanus Yazgin, Bensu Gunay, Kubra Arslan, Nuri Azbar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
Tugba Keskin, Haris Nalakath Abubackar, Okyanus Yazgin, Bensu Gunay, Nuri Azbar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
Hans Nalakath Abubackar, Tugba Keskin, Kubra Arslan, Cansu Vural, Didem Aksu, Duygu Karaalp Yavuzyilmaz, Guuen Ozdemir, Nuri Azbar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Agricultural Engineering
Koray Akarsu, Gozde Duman, Alper Yilmazer, Tugba Keskin, Nuri Azbar, Jale Yanik
BIORESOURCE TECHNOLOGY
(2019)
Article
Environmental Sciences
Bensu Gunay, Nuri Azbar, Tugba Keskin
Article
Energy & Fuels
Simge Sertkaya, Nuri Azbar, Haris Nalakath Abubackar, Tugba Keskin Gundogdu
Summary: Syngas fermentation via the Wood-Ljungdahl pathway has the potential to convert gaseous pollutants into high-value commodities. This study identified the most effective trace elements and their concentrations for ethanol production by Clostridium ljungdahlii, demonstrating a significant improvement in ethanol production could be achieved by optimizing trace element concentrations. The effects of tungsten and copper on ethanol and biomass production were found to be the most significant, and the developed model could potentially reduce the cost of trace element solutions by 18-22%.
Review
Environmental Sciences
Azize Ayol, Luciana Peixoto, Tugba Keskin, Haris Nalakath Abubackar
Summary: Microbial C1 gas conversion technologies have developed rapidly, converting waste gases into valuable chemicals and fuels, but the mass transfer constraint of substrates to microorganisms remains a challenge. Emerging technologies like syngas fermentation and hydrogenotrophic methanation, as well as the use of a biocathode for CO2 sequestration and production of valuable chemicals, show great potential for sustainability and expanding the product portfolio in C1 gas conversion processes.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Green & Sustainable Science & Technology
Ramita Khanongnuch, Harris Nalakath Abubackar, Tugba Keskin, Mine Gungormusler, Gozde Duman, Ayushi Aggarwal, Shisir Kumar Behera, Lu Li, Busra Bayar, Eldon R. Rene
Summary: Air pollution is a significant global issue that has contributed to global warming and severe health and environmental impacts. This review compares different bioreactor configurations for waste gas treatment and discusses the potential of resource recovery. The study highlights the importance of composition, concentration, and flow rate in the performance of bioreactors.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Engineering, Multidisciplinary
Tugba Keskin, Gozde Duman
PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
(2020)
Article
Biotechnology & Applied Microbiology
T. Keskin-Gundogdu
CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY
(2019)
Article
Biotechnology & Applied Microbiology
E. A. Pekguzel, T. K. Gundogdu, N. Azbar
CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY
(2015)
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)
