Article
Agricultural Engineering
Zahra Al Hasani, Jagdeep Kumar Nayak, Halima Alhimali, Abdullah Al-Mamun
Summary: The study found that the use of conductive additive GAC/nZVI in anaerobic digestion process can significantly increase the biogas production and methane generation, as well as improve the removal rate of COD.
BIORESOURCE TECHNOLOGY
(2022)
Review
Agricultural Engineering
Ruolin Guan, Hairong Yuan, Shuai Yuan, Beibei Yan, Xiaoyu Zuo, Xiteng Chen, Xiujin Li
Summary: This paper reviewed recent research on anaerobic bioconversion of crop stalks, focusing on the effects of pretreatment methods, AD operation parameters, and technology development on AD performance, and proposed recommendations for future development.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Rajagopal Malolan, Ramesh Sai Jayaraman, Srikanth Adithya, Jayaseelan Arun, Kannappan Panchamoorthy Gopinath, Panneer Selvam SundarRajan, Omaima Nasif, Woong Kim, Muthusamy Govarthanan
Summary: This study introduces a zero emission concept for waste disposal and explores the potential for renewable green energy production by utilizing a mixture of cow dung and chicken waste for biogas production. The study evaluates the impact of different proportions of waste mixtures and the addition of Chlorella pyrenoidosa co-substrate on biogas distribution and production efficiency.
Article
Engineering, Environmental
Brenda Clara Gomes Rodrigues, Bruna Sampaio de Mello, Maria Lucia Gonsales da Costa Araujo, Gustavo Henrique Ribeiro da Silva, Arnaldo Sarti
Summary: The study demonstrates that anaerobic digestion of soybean molasses using a high-rate reactor can achieve high removal efficiencies and biomethane yield. Moreover, high concentrations of methane in the biogas were obtained under different organic loading rates and hydraulic retention times.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Thuane Mendes Anacleto, Helena Rodrigues Oliveira, Vinicius Lacerda Diniz, Vinicius Peruzzi de Oliveira, Fernanda Abreu, Alex Enrich-Prast
Summary: Anaerobic digestion is a versatile manure management approach that plays a central role in circular economy. Different manure types and pretreatment methods have varying effects on methane yield, and the application of appropriate pretreatment can increase energy potential and substitute fossil fuels.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Endashaw Workie, Vinor Kumar, Amit Bhatnagar, Yiliang He, Yanjun Dai, Yen Wah Tong, Yinghong Peng, Jingxin Zhang, Cunbin Fu
Summary: With the increasing global food waste, the potential for bioenergy production is being explored. This paper reviews the research progress, gaps, and prospects in the process of methane production from food waste. Anaerobic digestion has shown high efficiency in converting food waste to methane. The review also highlights the importance of evaluating weather variations and microphysical properties of the food waste for efficient valorization.
Article
Agricultural Engineering
Shiyou Pan, Hossain M. Zabed, Zhenchong Li, Xianghui Qi, Yutuo Wei
Summary: This study establishes a strategy of balancing sugar-fiber-nitrogen nutrients for improved methane production by co-digesting banana pseudostem, sugarcane baggage, and chicken manure. The co-digestion process remains stable and provides a deeper understanding of nutrient balance.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Federico Battista, Nicola Frison, David Bolzonella
Summary: The European Strategy for plastics aims to reduce the use of single use plastics and promote biodegradable plastics. Research shows that sugar cane cellulosic pulp materials have good methane production, suitable for treatment together with food waste in anaerobic digestion plants.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Energy & Fuels
Iwona Zawieja, Malgorzata Worwag
Summary: This study investigated the impact of chemical disintegration with peracetic acid on biogas production efficiency using methane fermentation of pretreated sludge. The results showed that this method can increase sludge digestion degree and biogas production efficiency.
Article
Environmental Sciences
Freedon Daniel, M. Sekar, Beata Gavurova, Chandramohan Govindasamy, R. Krishnan Moorthy, P. Boomadevi, T. R. Praveenkumar
Summary: This study investigates the feasibility of producing biogas from water hyacinth through a pretreatment process. By subjecting the water hyacinth samples to a high concentration of H2SO4, the lignocellulosic materials are broken down, leading to enhanced biogas production. The results demonstrate that pretreatment with 5% v/v H2SO4 for 60 min significantly improves biogas yield.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Yeqing Li, Shasha Yu, Xingru Yang, Yijing Feng, Liming Dong, Yi Zhang, Lu Feng, Mahmoud Mazarji, Junting Pan
Summary: This study investigated the structural differences of humic acids (HAs) derived from different feedstocks and their effects on anaerobic digestion (AD). The study found that HAs with higher carboxyl and phenolic hydroxyl groups showed greater inhibition effect on AD. Different feedstock-derived HAs exhibited variations in aromaticity and humification degree, confirming the influence of HA structures on AD.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
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
Microbiology
Sotirios D. Kalamaras, Maria Lida Christou, Christos A. Tzenos, Sotirios Vasileiadis, Dimitrios G. Karpouzas, Thomas A. Kotsopoulos
Summary: This study investigated the role of the bioaugmented critical biomass in addressing ammonia inhibition in anaerobic reactors used for biogas production. It was found that injecting a volume equal to 65.62% of the total working reactor volume resulted in the best methane production. The dominant microbial member in all reactors was Methanosaeta.
Review
Agricultural Engineering
Weixin Zhao, Haizhou Yang, Shufei He, Qingliang Zhao, Liangliang Wei
Summary: This review comprehensively summarizes the applications, performances, and economies of biochar strategies in anaerobic digestion systems, elucidating the improvement effects of biochar application on biogas production and purification, and evaluating the mechanisms for enhancing digestion efficiency through biochar addition.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Yonglan Xi, Yang Liu, Xiaomei Ye, Jing Du, Xiangping Kong, Dong Guo, Qingbo Xiao
Summary: The study showed that using Pseudo-ginseng residues as additives significantly increased biogas and methane production in anaerobic digestion, leading to higher productivity.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(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
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
Agricultural Engineering
Eva Maria Prem, Simon Franz Duschl, Andreas Otto Wagner
Summary: Anaerobic digestion (AD) of organic waste materials is an ecological way to produce biogas. However, high concentrations of aromatic compounds like phenyl acids (PA) in organic waste can inhibit the AD process. This study investigated the effects of increasing PA concentrations on AD using six biogas reactors, and found that an increase in acetate and propionate concentrations were the earliest signs of process impairments. Furthermore, the study showed that syntrophic VFA oxidation and hydrogenotrophic methanogenesis became relevant in impaired but still biogas producing reactors, and the decrease in biogas production is a time-delayed sign of process impairments.
BIOMASS & BIOENERGY
(2023)
Article
Virology
Rudolf Markt, Fabian Stillebacher, Fabiana Naegele, Anna Kammerer, Nico Peer, Maria Payr, Christoph Scheffknecht, Silvina Dria, Simon Draxl-Weiskopf, Markus Mayr, Wolfgang Rauch, Norbert Kreuzinger, Lukas Rainer, Florian Bachner, Martin Zuba, Herwig Ostermann, Nina Lackner, Heribert Insam, Andreas Otto Wagner
Summary: Since the start of the 2019 pandemic, wastewater-based epidemiology (WBE) has proven to be a valuable tool for monitoring the prevalence of SARS-CoV-2. With methods and infrastructure being settled, it is time to expand the potential of this tool to a wider range of pathogens. Our study used WBE data from SARS-CoV-2 surveillance to monitor the presence of influenza and norovirus in wastewater during the winter season. The results showed the applicability of ammonia-normalization in comparing different wastewater treatment plants and the potential of utilizing existing WBE programs for monitoring multiple pathogens.
Editorial Material
Microbiology
Andreas Otto Wagner, Maria Westerholm, Blaz Stres, Jan Kopecny
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
Hannes Schenk, Petra Heidinger, Heribert Insam, Norbert Kreuzinger, Rudolf Markt, Fabiana Naegele, Herbert Oberacher, Christoph Scheffknecht, Martin Steinlechner, Gunther Vogl, Andreas Otto Wagner, Wolfgang Rauch
Summary: Wastewater-based epidemiology has been widely used in Austria since April 2020 to monitor the SARS-CoV-2 pandemic. This study analyzed the viral concentrations in raw sewage to predict short-term hospitalization occupancy. The results showed the potential of using viral loads in sewage to forecast Covid-19 hospitalization occupancy.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Eva Maria Prem, Alessa Schwarzenberger, Rudolf Markt, Andreas Otto Wagner
Summary: Aromatic compounds like phenyl acids (PA) can accumulate during anaerobic digestion (AD) of organic wastes. The effects of PA on microbial communities degrading different substrates in thermophilic batch reactors were evaluated. The toxicity of PA depended on the type of substrate, microbial diversity and composition, and extracellular polymeric substances (EPS). Methane production in MCC reactors was less affected by PA compared to other substrates, and acetate concentrations increased in all PA reactors.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Eva Maria Prem, Rudolf Markt, Mathias Wunderer, Andreas Otto Wagner
Summary: Efficient biogas production from organic waste is crucial for achieving carbon neutrality in the future. This study investigated the further digestion of thermophilic press water from a municipal solid waste digester using a combination of thermo- and mesophilic posttreatment methods. The results demonstrated that the press water still had significant biogas potential, particularly during the high season in central Europe. While there was an initial decrease in biogas production during the mesophilic posttreatment, the overall losses could be compensated, resulting in no significant difference in biogas production between the thermo- and mesophilic approaches. These findings suggest that the change in microbial community and the enhanced degradation of problematic intermediates, such as valerate, in the mesophilic reactor contribute to this compensatory effect.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Public, Environmental & Occupational Health
Aparna Keshaviah, Megan B. Diamond, Matthew J. Wade, Samuel V. Scarpino
Summary: We surveyed wastewater monitoring programmes in 43 countries to inform the development of global monitoring systems. Most programmes focused on urban populations. High-income countries primarily used composite sampling at treatment plants, while low-income and middle-income countries often used grab sampling from surface waters, drains, and latrines. Though most programmes analyzed samples domestically, there was a longer processing time in low-income and middle-income countries. While SARS-CoV-2 variant monitoring was common in high-income countries, it was less frequent in low-income and middle-income countries. Most programmes shared data internally, but not publicly. These findings emphasize the importance of integrating and expanding wastewater initiatives for global disease surveillance.
LANCET GLOBAL HEALTH
(2023)
Article
Biotechnology & Applied Microbiology
Thomas M. Ludwikowski, Andreas O. Wagner, Rosa Margesin
Summary: The efficiency of converting ferulic acid (FA) to vanillic acid (VA) by the cold-adapted strain Paraburkholderia aromaticivorans AR20-38 was optimized by studying culture conditions. The results showed that temperature, substrate concentration, and nutrient availability have significant impacts on the bioconversion efficiency.
ANNALS OF MICROBIOLOGY
(2023)