Article
Chemistry, Physical
Juan F. Gonzalez, Ana I. Parralejo, Jeronimo Gozalez, Andres Alvarez, Eduardo Sabio
Summary: This study evaluated the biogas production and quality from four different biomasses in different batch reactors, revealing variations in methane yields from different biomasses and successfully applied various models to assess the kinetic parameters of methane production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Jingjing Tong, Chuang Song, Mei Song, Maomao Yuan, Dexun Zou, Xinxin Li, Xusheng Zheng, Yanping Liu
Summary: The increase in recirculation batches can improve the yield of biogas slurry and methane in the digestion process of community solid waste, and reduce the accumulation of volatile fatty acids. The digestion process mainly produces methane through hydrogenotrophic methanogenesis and syntrophic acetic acid-oxidizing methanogenesis. The genera Methanobacterium and Methanomassiliicoccus are closely associated with the biogas production performance.
BIOENERGY RESEARCH
(2023)
Article
Engineering, Environmental
Arini Wresta, Neni Sintawardani, Sanggono Adisasmito, Tonni Agustiono Kurniawan, Tjandra Setiadi
Summary: The study demonstrated that self-sustaining methane production from tofu whey resulted in VFA neutralization effect and maintained a stable pH value. The technology offers environmental and economic benefits based on energy-saving and greenhouse gas emission reduction, as indicated by the experimental data.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Shifare Berhe, Seyoum Leta
Summary: The study evaluated the anaerobic co-digestion of tannery wastewater (TWW) with dairy wastewater (DWW) using a two-phase anaerobic sequencing batch reactor (ASBR). The addition of DWW improved the process efficiency, with increased biogas production and methane yield compared to mono-digestion of TWW. The two-phase anaerobic digestion process exhibited stable performance and high chemical oxygen demand removal efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Energy & Fuels
Slawomir Lazarski, Andrzej Butarewicz, Marcin Cichosz, Urszula Kielkowska
Summary: This paper presents the results of research on the kick-off process of fermentation in three selected biogas plants in Poland. Supplementing a dedicated mixture of microelements in the first days of fermentation chamber kick-off has a positive effect on stabilizing the methane fermentation process and allows for faster and higher loading of fermenters with dry organic matter. This shortens the kick-off process time and reduces costs significantly.
Article
Engineering, Environmental
Danelle Bishoff, Ahmed AlSayed, Ahmed Fergala, Ahmed Eldyasti
Summary: This study investigates the potential of using methanotrophic bacteria for nitrogen removal in wastewater treatment plants, demonstrating their ability to effectively remove ammonium and convert it to nitrate. The research results show high efficiency in nitrogen removal and nitrification process under different conditions, highlighting the potential of methanotrophs as an alternative method for nitrogen removal.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Danelle Bishoff, Ahmed AlSayed, Safyat Hosen, Pranav Menon, Ahmed ElDyasti
Summary: This study evaluated the impact of COD on methanotrophic activity and found that COD concentrations up to 540 mg/L had limited influence. Additionally, comparing methanotrophic sludge with waste activated sludge showed that the former had a higher methane specific yield and solids destruction rate, demonstrating the feasibility of incorporating methanotrophs in WWTPs.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Raffaele Morello, Francesco Di Capua, Ludovico Pontoni, Stefano Papirio, Danilo Spasiano, Umberto Fratino, Francesco Pirozzi, Giovanni Esposito
Summary: The study found that applying microaerobic conditions during anaerobic digestion of low-biodegradable sewage sludge can accelerate the hydrolytic stage, increase methane production, and reduce sludge humification degree and volatile fatty acid accumulation.
Review
Energy & Fuels
Nwabunwanne Lilian Nwokolo, Matthew Chekwube Enebe
Summary: Biogas production from organic waste is a sustainable means of meeting household energy needs, and understanding and controlling biotic and abiotic factors can enhance microbial performance and promote biogas production.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Chemical
Yue Zhang, Sigrid Kusch-Brandt, Andrew M. Salter, Sonia Heaven
Summary: This study provides a detailed analysis and comparison of methane yields from different energy crops and crop residues, focusing on European crops, revealing significant differences in methane yields among different crops. The intra-crop variation of methane yield was found to be higher than the inter-crop variation, highlighting the high-risk nature of relying on individual assay results when planning biogas operations.
Article
Thermodynamics
Ingrid R. F. S. Alves, Claudio F. Mahler, Luciano B. Oliveira, Marcelo M. Reis, Joao P. Bassin
Summary: The addition of crude glycerol in anaerobic co-digestion process can significantly increase the production of biogas and methane. Although methane production was transiently inhibited at the highest concentration in the trials, it was restored and even maximized after a period of adaptation.
Article
Engineering, Environmental
M. Mofijur, I. M. Rizwanul Fattah, P. Senthil Kumar, Sk Yasir Arafat Siddiki, S. M. Ashrafur Rahman, S. F. Ahmed, Hwai Chyuan Ong, Su Shiung Lam, Irfan Anjum Badruddin, T. M. Yunus Khan, T. M. Mahlia
Summary: The waste generated by the farm animal and meat processing industry can be utilized for energy recovery, with organic materials critical for biogas production through anaerobic digestion, potentially reducing greenhouse gas emissions. Livestock waste in Australia has significant electricity generation potential, with Queensland State capable of producing over half of the electricity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Environmental Sciences
Magdalena Cwiertniewicz-Wojciechowska, Grzegorz Cema, Aleksandra Ziembinska-Buczynska
Summary: Sewage sludge is a problem for wastewater treatment plants in terms of finances and management, but the most popular disposal method is methane fermentation. The composition of sewage sludge varies, and different substrates treated in methane fermentation produce varying amounts and qualities of biogas. Depending on the capabilities and equipment, different pretreatment methods are available.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
C. Veluchamy, Ajay S. Kalamdhad, Brandon H. Gilroyed
Summary: The kinetic study of plug flow reactor digesting corn silage under mesophilic conditions showed that increasing organic loading rate (OLR) led to a decrease in biogas yield and methane content in the biogas. The developed kinetic model can be used to design plug flow reactors for digesting various organic wastes. The maximum biogas yield and first-order reaction rate constant were determined in this study for future reactor design.
Article
Chemistry, Multidisciplinary
Egidijus Buivydas, Kestutis Navickas, Kestutis Venslauskas, Bronius Zalys, Vidmantas Zuperka, Mantas Rubezius
Summary: Co-digestion of chicken manure with pig fat can effectively utilize waste, increase the biogas production, and methane concentration.
APPLIED SCIENCES-BASEL
(2022)
Article
Microbiology
Isabel Moreno-Indias, Leo Lahti, Miroslava Nedyalkova, Ilze Elbere, Gennady Roshchupkin, Muhamed Adilovic, Onder Aydemir, Burcu Bakir-Gungor, Enrique Carrillo-de Santa Pau, Domenica D'Elia, Mahesh S. Desai, Laurent Falquet, Aycan Gundogdu, Karel Hron, Thomas Klammsteiner, Marta B. Lopes, Laura Judith Marcos-Zambrano, Claudia Marques, Michael Mason, Patrick May, Lejla Pasic, Gianvito Pio, Sandor Pongor, Vasilis J. Promponas, Piotr Przymus, Julio Saez-Rodriguez, Alexia Sampri, Rajesh Shigdel, Blaz Stres, Ramona Suharoschi, Jaak Truu, Ciprian-Octavian Truica, Baiba Vilne, Dimitrios Vlachakis, Ercument Yilmaz, Georg Zeller, Aldert L. Zomer, David Gomez-Cabrero, Marcus J. Claesson
Summary: The study of the human microbiome presents challenges in dealing with the heterogeneity of data and the variation in microbiome composition. New techniques are required to address emerging applications and the vast heterogeneity of microbiome data.
FRONTIERS IN MICROBIOLOGY
(2021)
Review
Microbiology
Laura Judith Marcos-Zambrano, Kanita Karaduzovic-Hadziabdic, Tatjana Loncar Turukalo, Piotr Przymus, Vladimir Trajkovik, Oliver Aasmets, Magali Berland, Aleksandra Gruca, Jasminka Hasic, Karel Hron, Thomas Klammsteiner, Mikhail Kolev, Leo Lahti, Marta B. Lopes, Victor Moreno, Irina Naskinova, Elin Org, Ines Paciencia, Georgios Papoutsoglou, Rajesh Shigdel, Blaz Stres, Baiba Vilne, Malik Yousef, Eftim Zdravevski, Ioannis Tsamardinos, Enrique Carrillo de Santa Pau, Marcus J. Claesson, Isabel Moreno-Indias, Jaak Truu
Summary: The increasing number of microbiome-related studies has provided more data on human microbiome composition and function, allowing for deeper exploration of host-microbiome associations and their impact on complex diseases. Improved data-analytical tools are necessary to effectively utilize the peculiarities of microbiome data, while machine learning offers insights into personalized medicine and disease prediction. This review focuses on the application of machine learning in microbiome studies for diagnostics, prognostics, and therapeutics, highlighting the potential for using microbial communities to predict disease states and stratify patients.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Acoustics
Jurij Gostisa, Brane Sirok, Sabina Kolbl Repinc, Marjetka Levstek, Marjetka Strazar, Benjamin Bizjan, Mojca Zupanc
Summary: The novel pinned disc cavitator demonstrates superior hydrodynamic performance and energy efficiency compared to the serrated disc cavitator on a pilot scale, as well as significant mechanical and chemical wastewater treatment capabilities.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Leon Deutsch, Damjan Osredkar, Janez Plavec, Blaz Stres
Summary: The study investigated the effects of nusinersen therapy on SMA patients and found significant differences in urine metabolomes between males and females. Through machine learning and statistical analysis, urinary creatinine was identified as an important marker in distinguishing SMA patients from healthy cohorts.
Article
Biochemistry & Molecular Biology
Leon Deutsch, Blaz Stres
Summary: This study introduced a minimal pressure approach (MP) to measure stool material crosslinking, finding that MP values increased exponentially with higher consistency, enabling stratification of samples exhibiting mixed BSS classes. The results provide insights into the relationship between stool hardness and human health, suggesting that the MP approach could be useful for future microbiome and metabolome studies.
Article
Microbiology
Tamara Mainetti, Marilena Palmisano, Fabio Rezzonico, Blaz Stres, Susanne Kern, Theo H. M. Smits
Summary: The study assessed the degradation of E2-3S in environmental samples near a WWTP and found a diverse range of bacteria capable of degrading this conjugated estrogen. Additionally, it was discovered that E2-3S-degrading bacteria are also present in untreated water, indicating that the WWTP does not impact the microbial community's ability to degrade E2-3S.
ARCHIVES OF MICROBIOLOGY
(2021)
Editorial Material
Microbiology
Andreas Otto Wagner, Maria Westerholm, Blaz Stres, Jan Kopecny
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Sabina Kolbl Repinc, Benjamin Bizjan, Vaibhav Budhiraja, Matevz Dular, Jurij Gostisa, Barbara Brajer Humar, Anela Kaurin, Andrej Krzan, Marjetka Levstek, Juan Francisco Morales Arteaga, Martin Petkovsek, Gasper Rak, Blaz Stres, Brane Sirok, Ema Zagar, Mojca Zupanc
Summary: The novel pinned disc rotational generator of hydrodynamic cavitation showed high efficiency in reducing sludge particle size, increasing specific surface area, and enhancing the concentration of COD, NH4-N, NO3-N, PO4-P.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Sabine Marie Podmirseg, Maria Gomez-Brandon, Markus Muik, Blaz Stres, Martin Hell, Thomas Puempel, Sudhir Murthy, Kartik Chandran, Hongkeun Park, Heribert Insam, Bernhard Wett
Summary: Sidestream partial nitritation and deammonification (pN/A) is a well-established technology for treating high-strength ammonia wastewater. However, its application in the mainstream treatment is hindered by poor retention of anaerobic ammonia-oxidizing bacteria (AnAOB), insufficient repression of nitrite oxidizing bacteria (NOB), and difficult control of soluble chemical oxygen demand and nitrite levels. This study monitored a full-scale municipal wastewater treatment plant and found that regular transfer of sidestream biomass and enrichment of granular anammox biomass were crucial for AnAOB establishment in the mainstream.
Article
Biochemistry & Molecular Biology
Leon Deutsch, Alexandros Sotiridis, Bostjan Murovec, Janez Plavec, Igor Mekjavic, Tadej Debevec, Blaz Stres
Summary: Physical inactivity is a global health problem associated with chronic diseases. This study explores the metabolic differences between physically active and inactive young males. The results show significant differences before and after training sessions, with trained individuals having distinct urine metabolomes. Interestingly, even a small amount of exercise can modify the resting urine metabolome of inactive individuals. Moreover, urine samples taken over consecutive mornings can effectively detect differences in lifestyle.
Article
Microbiology
Matevz Likar, Mateja Grasic, Blaz Stres, Marjana Regvar, Alenka Gaberscik
Summary: This study is about the metagenomic sequencing of initial fungal communities on decomposing common reed leaves under different environmental conditions. Results show that a complex network of fungi forms on the plant and persists into the decomposition phase. The geographic source of the litter and leaf age do not affect the structure and diversity of fungal communities.
Article
Biochemistry & Molecular Biology
Leon Deutsch, Tadej Debevec, Gregoire P. Millet, Damjan Osredkar, Simona Opara, Robert Sket, Bostjan Murovec, Minca Mramor, Janez Plavec, Blaz Stres
Summary: Preterm birth has a significant impact on child mortality, and preterm born adults have an increased risk of chronic diseases. This study explored the differences in metabolomes between preterm and full-term male participants during rest and exercise, as well as the overall differences in human gut-microbiomes. The findings revealed a complex set of microbiome-related metabolic biomarkers, indicating distinct host-microbiome interactions between the two groups.
Article
Agronomy
Matevz Likar, Blaz Stres, D. E. N. I. S. Rusjan, K. A. T. A. R. I. N. A. Vogel-mikus, M. A. R. J. A. N. A. Regvar
Summary: The concept of terroir is related to the environmental conditions of grapevines, and understanding the variability of grapevine elemental compositions and the influence of factors can improve the traceability of wines. Soil fungal and bacterial communities play a critical role in the elemental composition of grapevines, with differences seen between the two microbial groups.
PLANT SOIL AND ENVIRONMENT
(2022)
Article
Environmental Sciences
Mojca Zupanc, Barbara Brajer Humar, Matevz Dular, Jurij Gostis, Marko Hocevar, Sabina Kolbl Repinc, Mario Krzyk, Lovrenc Novak, Jernej Ortar, Ziga Pandur, Blaz Stres, Martin Petkovsek
Summary: Anaerobic digestion in wastewater treatment plants can convert waste activated sludge into biogas. Pre-treatment of the sludge can further improve the efficiency and increase methane production. Different cavitation regimes have different effects on the physical and chemical properties of the sludge samples. While methane production increased, the energy consumption efficiency was not particularly high.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
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)
