Article
Agricultural Engineering
Radziah Wahid, Svein Jarle Horn
Summary: In-situ biological CO2 methanation (BM) is a low-cost biogas upgrading process that can be implemented in existing biogas plants by adding hydrogen, with the option of using two-serial connected continuous stirred tank reactors (CSTRs) for enhanced efficiency. The study showed that varying mixing speed and gas recirculation can significantly impact BM performance, with potential for improved methane production rates.
BIOMASS & BIOENERGY
(2021)
Article
Engineering, Environmental
Valentine Gasquet, Boram Kim, Anne Bonhomme, Hassen Benbelkacem
Summary: This study experimentally confirmed the effectiveness of sewage sludge ash and activated carbon mixtures for the removal of H2S from landfill biogas, showing that the mixture had higher removal efficiency and selectively chemisorbed H2S.
Article
Green & Sustainable Science & Technology
M. E. Uddin, H. A. Aguirre-Villegas, R. A. Larson, M. A. Wattiaux
Summary: This study aimed to determine the carbon footprint of milk from cows fed different diets. The results showed that cows fed low forage diets had higher carbon footprints, and Holstein cows had higher milk carbon footprints compared to Jersey cows. Integrating emissions from on-farm feed production and purchased feed, as well as enteric and manure emissions, further amplified the differences in carbon footprints.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Davide Papurello, Silvia Silvestri, Franco Biasioli, Lidia Lombardi
Summary: In this study, biomethane fuel was obtained from biogas using solid matrix obtained from a wood-fed central heating plant. The composition of biomethane and its injection limits into the gas grid were analyzed. The process showed effective CO2 removal initially, but limitations related to ash content and reactive phases were observed after prolonged testing period.
Article
Environmental Sciences
Jingwei Ma, Zefang Yu, Linxiang Shu, Shuizhou Ke, Qiulai He, Quanbao Zhao, Qiang Ke
Summary: The study investigated the effects of three iron-based particles on the biogas yield during the anaerobic digestion (AD) of cow manure containing florfenicol (FLO). It was found that the addition of low-concentration zero-valent iron (ZVI), Fe2O3, and high-concentration Fe3O4 enhanced the methane production rate significantly. High concentration of ZVI, however, led to the crash of the AD system due to the rise in pH. The relative abundances of Limnobacter and Pseudomonas were correlated with the absolute abundance of floR gene, indicating their potential role as host bacteria for the gene.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Ye Yang, Mengyao Wang, Su Yan, Xiaoyu Yong, Xueying Zhang, Mukesh Kumar Awasthi, Yonglan Xi, Jun Zhou
Summary: This study aimed to improve methane production in mixed anaerobic digestion by adding hydrochar and biogas slurry reflux. The results showed that hydrochar provided attachment for microbial growth and had abundant surface functional groups for adsorption. The addition of hydrochar and biogas slurry reflux significantly increased methane and biogas production. The study also found that the addition of hydrochar and biogas slurry reflux improved the microbial abundance and diversity, and promoted methane yield through enhanced redox characteristics and DIET.
Article
Chemistry, Multidisciplinary
Roberta Mota-Panizio, Manuel Jesus Hermoso-Orzaez, Luis Carmo-Calado, Goncalo Lourinho, Paulo Sergio Duque de Brito
Summary: The study found that when digesting cork boiling wastewater (CBW), the biomethane potential is very low for Ino/CBW ratios of 1:1 and 2:1 compared to other organic substrates using digested sludge as inoculum; however, co-digestion with cow manure showed better biomethane yields.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Roberto Eloy Hernandez Regalado, Jurek Haener, Elmar Bruegging, Jens Traenckner
Summary: This study examines the economic viability of using cow manure and piglet manure in small-scale agricultural digesters and evaluates different treatment schemes. The research finds that utilizing agricultural waste for producing renewable electricity and heat is a financially profitable approach.
Article
Green & Sustainable Science & Technology
Jia Boh Tan, Nur Syakina Jamali, Wei En Tan, Hasfalina Che Man, Zurina Zainal Abidin
Summary: The study evaluated the techno-economic feasibility of an on-farm biogas system utilizing cow manure, demonstrating its ability to generate electricity and additional income for farmers.
Article
Biotechnology & Applied Microbiology
Marisa Raketh, Rattana Jariyaboon, Prawit Kongjan, Eric Trably, Alissara Reungsang, Burachat Sripitak, Saowapa Chotisuwan
Summary: The study shows that using rubber wood ash to remove sulfate from skim latex serum before anaerobic digestion enhances biogas production yield and quality.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Review
Biotechnology & Applied Microbiology
Malvin K. Nadan, Saeid Baroutian
Summary: The increasing dairy cattle farming has led to uncontrolled manure generation, causing significant environmental threats due to greenhouse gas emissions. Anaerobic digestion of dairy cow manure (DCM) provides a solution for waste management and renewable energy generation while mitigating climate change. This review focuses on the potential use of anaerobic digestion in Fiji for optimizing DCM biogas production, considering economic feasibility and environmental benefits. The study emphasizes the need for further research on the optimization of biogas and biomethane potential of DCM in Fiji's dairy farms.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Minghui Zhang, Dawen Gao
Summary: The use of microwave-enhanced advanced oxidation process for pretreating cow manure biogas slurry can effectively reduce COD levels and achieve solid-liquid separation. This method can reduce COD from 24,157mg/L to 7536mg/L, lower other pollutant levels, and reduce treatment costs without the need for additional agents.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Environmental Sciences
Anastasia Kampioti, Dimitrios Komilis
Summary: The viability of co-digestion of coffee waste with other organic waste was investigated. The study found that co-digestion of coffee waste with anaerobic sludge had a positive effect, while co-digestion with cow manure and food waste had a negative effect on biogas generation.
Editorial Material
Biotechnology & Applied Microbiology
Qi Zhou, Xiang Li, Shaohua Wu, Yuanyuan Zhong, Chunping Yang
Summary: This article discusses recent strategies for enhanced antibiotic removal from swine wastewater and offers insights on anaerobic digestion process design for improved antibiotic removal.
TRENDS IN BIOTECHNOLOGY
(2021)
Article
Energy & Fuels
Jakub Mazurkiewicz
Summary: The aim of the study is to propose a solution that involves converting livestock manure into biogas immediately after its removal from the barn, which is both environmentally friendly and cost-effective. The research findings show that the use of biogas equipment can significantly reduce carbon dioxide emissions, and the estimated payback period is less than 5 years.
Article
Biotechnology & Applied Microbiology
Julia Zoehrer, Maraike Probst, Sabrina Dumfort, Hannes Lenz, Ralf Pecenka, Heribert Insam, Judith Ascher-Jenull
Summary: One of the most challenging aspects of using wood chips as a renewable energy source is the loss of biomass during storage. The study found that shifts in microbial community composition occurred mainly at the beginning of the storage experiment, with little changes later on. Although the addition of alkaline stabilization agent Ca(OH)(2) altered the physicochemical properties of wood chips, it did not prevent loss of biomass.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Biochemistry & Molecular Biology
Magdalena Nagler, Sabine Marie Podmirseg, Markus Mayr, Judith Ascher-Jenull, Heribert Insam
Summary: Microbiome studies using next generation sequencing are commonly performed on the total DNA pool, which includes extracellular- and intracellular DNA fractions. Results show that total DNA has lower species richness and unique reads compared to intracellular DNA when tracking microbial community changes over time. The extracellular DNA fraction may qualitatively bias microbiome studies due to abundant sequences masking overall results, while intracellular DNA provides more reliable genetic information about potentially alive microbes.
Article
Microbiology
Thomas Klammsteiner, Andreas Walter, Tajda Bogataj, Carina D. Heussler, Blaz Stres, Florian M. Steiner, Birgit C. Schlick-Steiner, Heribert Insam
Summary: This study explores the feasibility of using black soldier fly larvae to process canteen food waste, showing that the larvae have a significantly higher consumption rate and waste reduction index compared to control chicken feed. However, the oil separator waste fraction inhibits larval biomass gain and can lead to high mortality rates.
FRONTIERS IN MICROBIOLOGY
(2021)
Editorial Material
Soil Science
Marianna Taffi, Judith Ascher-Jenull, Shiping Deng, Richard Dick, Heribert Insam, Andrey S. Zaitsev
APPLIED SOIL ECOLOGY
(2021)
Article
Engineering, Environmental
Samson Oluwasegun Masebinu, Olufunto Tolulope Fanoro, Heribert Insam, Charles Mbohwa, Andreas Otto Wagner, Rudolf Markt, Sebastian Hupfauf
Summary: This study evaluated the impact of biochar addition to AD reactors on productivity, efficiency, and stability. The results showed that biochar effectively reduced H2S production but had no effect on biogas and methane yields. It also did not alter the microbial community composition.
ENVIRONMENTAL ENGINEERING RESEARCH
(2022)
Article
Microbiology
Maraike Probst, Judith Ascher-Jenull, Heribert Insam, Maria Gomez-Brandon
Summary: This study conducted microbiome sequencing of Picea abies deadwood logs, demonstrating differences among three DNA types in terms of bacterial compositions and less abundant amplicon sequence variants. Analysis of intracellular and extracellular DNA fraction increased ecological depth, indicating the potential masking effect of extracellular DNA in the deadwood logs.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
R. Markt, L. Endler, F. Amman, A. Schedl, T. Penz, M. Buchel-Marxer, D. Grunbacher, M. Mayr, E. Peer, M. Pedrazzini, W. Rauch, A. O. Wagner, F. Allerberger, A. Bergthaler, H. Insam
Summary: Utilizing wastewater samples, this study found a correlation between viral load in wastewater and the incidence of COVID-19 cases, and suggested that the emergence of new virus variants may alter the wastewater signal, which should be taken into consideration in future models.
JOURNAL OF WATER AND HEALTH
(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
Biotechnology & Applied Microbiology
Fabian Amman, Rudolf Markt, Lukas Endler, Sebastian Hupfauf, Benedikt Agerer, Anna Schedl, Lukas Richter, Melanie Zechmeister, Martin Bicher, Georg Heiler, Petr Triska, Matthew Thornton, Thomas Penz, Martin Senekowitsch, Jan Laine, Zsofia Keszei, Peter Klimek, Fabiana Naegele, Markus Mayr, Beatrice Daleiden, Martin Steinlechner, Harald Niederstaetter, Petra Heidinger, Wolfgang Rauch, Christoph Scheffknecht, Guenther Vogl, Gunther Weichlinger, Andreas Otto Wagner, Katarzyna Slipko, Amandine Masseron, Elena Radu, Franz Allerberger, Niki Popper, Christoph Bock, Daniela Schmid, Herbert Oberacher, Norbert Kreuzinger, Heribert Insam, Andreas Bergthaler
Summary: Wastewater surveillance of SARS-CoV-2 at the national scale is effective in tracking emerging variants. The study developed a system called VaQuERo, which allows for accurate quantification of predefined variants in complex wastewater samples. The research also identified increased viral genetic diversity during the Delta variant period and proposed a framework for predicting emerging variants and measuring the reproductive advantage of variants of concern using wastewater data.
NATURE BIOTECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Andreas Walter, Maria Hanser, Christian Ebner, Heribert Insam, Rudolf Markt, Sebastian Hupfauf, Maraike Probst
Summary: The study found that well adapted, full-scale anaerobic digestion plants can maintain flexibility in different operation modes, with a highly diverse microbial community detected and a stable core microbiome. Significant changes in the microbial community were observed under different operation modes.
Article
Agricultural Engineering
Magdalena Nagler, Maraike Probst, Julia Zohrer, Sabrina Dumfort, Flavio Fornasier, Ralf Pecenka, Hannes Lenz, Heribert Insam, Judith Ascher-Jenull
Summary: The bacterial and fungal communities in wood chip piles of two different tree species were investigated, and the effects of Ca(OH)2 addition varied depending on the wood type. The wood type determined the native microbial community and temperature pattern, exerting different selective forces. Biomass loss was related to enzymatic activities and the abundance and composition of fungal communities.
BIOMASS & BIOENERGY
(2022)
Article
Environmental Sciences
Wolfgang Rauch, Hannes Schenk, Heribert Insam, Rudolf Markt, Norbert Kreuzinger
Summary: Wastewater-based epidemiology is an important monitoring tool for pandemic management, and this paper provides a framework for data modelling and analysis in this field. Data preprocessing, data smoothing, and multivariate regression are crucial steps to improve the accuracy of signal propagation and prediction.
ENVIRONMENTAL RESEARCH
(2022)
Article
Microbiology
Julia Vinzelj, Akshay Joshi, Diana Young, Ljubica Begovic, Nico Peer, Lona Mosberger, Katharina Cecile Schmid Luedi, Heribert Insam, Veronika Flad, Magdalena Nagler, Sabine Marie Podmirseg
Summary: Anaerobic fungi have the ability to degrade lignocellulosic biomass, and their preservation methods have been explored in this study. Cryopreservation in liquid nitrogen and agar preservation at 39 degrees C were found to be effective methods for long-term storage of these fungi.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Akshay Joshi, Diana Young, Liren Huang, Lona Mosberger, Bernhard Munk, Julia Vinzelj, Veronika Flad, Alexander Sczyrba, Gareth W. Griffith, Sabine Marie Podmirseg, Rolf Warthmann, Michael Lebuhn, Heribert Insam
Summary: This study reveals the selective enrichment of certain genera in media with rumen fluid and depleted rumen fluid from rumen and non-rumen samples,respectively. Additionally, five new clades were defined from fecal samples of llama, guanaco, yak, and elephant. Therefore, the non-rumen fluid medium is recommended for isolating anaerobic fungi from non-rumen environments.
Article
Environmental Studies
Tommaso Bardelli, Shamina Imran Pathan, Paola Arfaioli, Nadia Vignozzi, Sergio Pellegrini, Flavio Fornasier, Markus Egli, Maria Gomez-Brandon, Heribert Insam, Giacomo Pietramellara, Judith Ascher-Jenull
Summary: This study evaluated the effects of slope exposure on the physico-chemical and microbiological properties of soil in an Italian alpine forest. The results showed that slope exposure significantly influenced soil properties and enzyme activities. The effects varied between north-facing and south-facing slopes, as well as among soil horizons and aggregate size fractions.
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
V. Godvin Sharmila, Surya Prakash Shanmugavel, J. Rajesh Banu
Summary: Proper treatment and disposal of biomass waste is crucial to prevent environmental deposition and its negative impacts. Biofuel has emerged as a potential alternative to fossil fuels, reducing carbon emissions and meeting global energy demands. This review examines different biomass waste conversion techniques and explores the production of biofuels with zero carbon emissions. Research on anaerobic treatment, metabolic engineering, and artificial intelligence has been conducted to enhance biofuel production efficiency.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
Selvakumar Periyasamy, Adane Asefa Adego, P. Senthil Kumar, G. G. Desta, T. Zelalem, V. Karthik, J. Beula Isabel, Mani Jayakumar, Venkatesa Prabhu Sundramurthy, Gayathri Rangasamy
Summary: Valorizing agricultural waste into valuable products is crucial for environmental protection and bioeconomy advancement. Preprocessing of agricultural waste is a critical step to convert free carbohydrate molecules for final conversion, and factors such as biomass nature, feed loading, pH, temperature, and time influence the process. This review provides comprehensive information on agricultural waste availability, preprocessing techniques, and factors influencing performance.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Aqueel Ahmad, Ashok Kumar Yadav, Achhaibar Singh, Dinesh Kumar Singh
Summary: The study focuses on predicting and optimizing the yield of biogas production in an anaerobic digester using co-digestion. Experimental data was used to develop a machine learning-based prognostic model, and the Response Surface Methodology (RSM) was employed to optimize the parameters. The results demonstrate that RSM coupled with machine learning is an effective technique for modeling, predicting, and optimizing biogas production yield.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Yijing Zhong, Wenxiang Zhai, Xinli Wei
Summary: This paper studies the thermal stability and decomposition of cork materials with and without silica aerogel filler. The results show that the decomposition is inhibited and the pyrolysis is significantly reduced with the addition of silica aerogel. This finding suggests that silica aerogel-infused cork may be a promising raw material for biofuel production with reduced environmental pollution.
BIOMASS & BIOENERGY
(2024)
