Article
Agricultural Engineering
Zhaodi Guo, Muhammad Usman, Saeed A. Alsareii, Farid A. Harraz, M. S. Al-Assiri, Mohammed Jalalah, Xiangkai Li, El-Sayed Salama
Summary: The study found that a 2% loading of SHW was optimal for anaerobic digestion, resulting in the highest biomethane production and VFAs consumption. Higher concentrations of SHW led to decreased biomethane production and prolonged lag-phase, with accumulation of VFAs and ammonia inhibiting biomethane and methanogenic archaea production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Zhang-Wei He, Hong-Yu Jin, Yong-Xiang Ren, Wen-Jing Yang, Cong-Cong Tang, Chun-Xue Yang, Ai-Juan Zhou, Wen-Zong Liu, Ai-Jie Wang
Summary: This study proposed a promising approach, stepwise alkaline treatment coupled with ammonia stripping, to enhance short-chain fatty acids (SCFAs) production from waste activated sludge (WAS) anaerobic digestion. The strategy not only increased SCFAs production significantly, but also achieved nitrogen and carbon recovery, offering solutions for the carbon-neutral operation of wastewater treatment plants.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Andrea Gianico, Agata Gallipoli, Giulio Gazzola, Carlo Pastore, Barbara Tonanzi, Camilla M. Braguglia
Summary: A novel biorefinery platform integrating thermal pretreatment and solid-liquid separation unit is proposed to fully exploit food waste potential for production of valuable chemicals and energy through semi-continuous anaerobic bioconversion. The platform effectively extracts macromolecular organics and promotes acidogenic fermentation and chain elongation pathways, showing promising revenues by integrating the thermal upstream treatment.
BIORESOURCE TECHNOLOGY
(2021)
Review
Environmental Sciences
S. Ragasri, P. C. Sabumon
Summary: Global meat consumption is increasing with around 253 million metric tons of meat produced in 2020. As the population grows and food preferences change, the trend of meat consumption is expected to continue. Slaughterhouse waste, including both solid and liquid waste, increases with animal slaughtering. While developed countries have various technologies for slaughterhouse waste management, developing countries like India still lack effective utilization of these technologies.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Environmental Sciences
Ashutosh Kumar Pandey, S. Pilli, P. Bhunia, R. D. Tyagi, Y. Rao Surampalli, C. Tian Zhang, Sang-Hyoun Kim, Ashok Pandey
Summary: VFAs are the building blocks of the chemical industry and play a key role in the planet's organic carbon cycle. To address the issues of unsustainable VFA production from fossil fuels, it is crucial to develop alternate sources through anaerobic digestion. By researching accessible feedstocks, influencing parameters, and utilizing VFAs to create consumer products, economic stability can be achieved through traditional and advanced production methods.
Article
Chemistry, Multidisciplinary
Thierry Ribeiro, Laura Andre, Xiaojun Liu, Mael Mercier-Huat, Joseph Fayolle, Jean-Marie Grosmaitre, Andre Pauss
Summary: In the anaerobic digestion field, the dry matter and organic matter contents of samples are crucial for the design, operation, and maintenance of biogas plants. Volatile compounds can distort dry matter measurements, while the partial decomposition of bicarbonate in the digestion media leads to an underestimation of dry matter measurements. These factors have significant implications for accurate data assessment and balance.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
Wangwang Yan, Vel Vadivelu, Yogananda Maspolim, Yan Zhou
Summary: The study demonstrates the efficiency of using in-situ mild alkaline enhanced two-stage continuous stirred tank reactors (ALK-2-CSTRs) for co-digesting waste cooking oil and sewage sludge, showing a significant increase in methane yield. The microbial community analysis reveals the stimulation of lipolytic bacteria and hydrogenotrophic methanogens in ALK-2-CSTRs, indicating the promotion of the hydrogenotrophic methanogenic pathway. Cost evaluation also shows the economical superiority of ALK-2-CSTR over existing strategies for enhancing methane yield from co-substrates.
Article
Engineering, Environmental
Junkai Hu, Yongde Liu, Xue Song, Jihong Zhao, Qiaochong He
Summary: This study investigated the potential of using Brassica chinensis waste (BCW) for anaerobic fermentative production of volatile fatty acids (VFA). The results showed that stacking time, initial pH, inoculum dose, and temperature all had significant effects on VFA yield and the microbial community structure. Stacking BCW for 3 days resulted in the highest VFA yield of 187.79 mgCOD/gVS. VFA production was inhibited under acidic and alkaline conditions, and the optimal inoculum dose was found to be 2 gTS/L. Firmicutes and Proteobacteria were identified as the dominant microorganisms involved in the acid production step of hydrolysis in anaerobic fermentation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Kasra Khatami, Merve Atasoy, Maximilian Ludtke, Christian Baresel, Ozge Eyice, Zeynep Cetecioglu
Summary: The study investigated the impact of different sludge inoculums, pH levels, and retention times on the generation of VFAs during anaerobic digestion of food waste. Acetic acid was the dominant product under alkaline conditions, while propionic and acetic acids were dominant under acidic conditions.
Article
Energy & Fuels
Mukesh Kumar Awasthi, Lukitawesa Lukitawesa, Yumin Duan, Mohammad J. Taherzadeh, Zengqiang Zhang
Summary: In this study, the bacterial community in anaerobic digestion of citrus wastes inoculated with sludge was evaluated, revealing that key bacteria associated with volatile fatty acids (VFAs) production mainly belonged to Firmicutes, Bacteroidetes, and Actinobacteria. The study also observed changes in bacterial diversity among different treatment groups during the anaerobic digestion process.
Article
Engineering, Environmental
Huda Al Battashi, Shatha Al-Kindi, Vijai Kumar Gupta, Nallusamy Sivakumar
Summary: The study demonstrated that utilizing waste paper as a resource for PHA production through anaerobic digestion is a low-cost strategy. By optimizing the synthesis conditions of PHA from VFAs produced from waste paper, a significantly higher yield of PHA was achieved with a limited nutrient medium.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
Anwar Ahmad, Roomana Ghufran, Qazi Nasir, Fathima Shahitha, Mohammed Al-Sibani, Amal S. Al-Rahbi
Summary: This study investigated the effects of organic loading rate (OLR) on anaerobic co-digestion of food waste (FW) and solid poultry slaughterhouse waste (SPSW) in a fixed bed digester (FBD). The highest OLR achieved was 23.5 g COD/L, with a methane production of 7.8 L/L/d. At higher OLRs (25.5 to 27.5 g COD/L), the digester showed inhibition and lower methane yields due to the accumulation of volatile fatty acids (VFAs) and long chain fatty acids (LCFAs). Methanosaeta and Methanosarcina were dominant and played a crucial role in counteracting the acid effect. The FBD-AcoD system achieved significant removals of TS and VS (around 79% and 76% respectively) and a biogas production of 81 g COD/L/d at an SPSW mixing ratio of 18.5% and an OLR of 23.5 g COD/L.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Engineering, Environmental
Sergi Astals, Juan Jose Chavez-Fuentes, Gabriel Capson-Tojo, Miroslav Hutnan, Paul D. Jensen
Summary: Studies have shown that LCFA can alleviate the inhibition of ammoniacal nitrogen to a certain extent, possibly due to the formation of a protective layer by LCFA that limits the diffusion of free ammonia into the cell, or provides a localized lower pH around the microbial cell. However, the inhibition of ammoniacal nitrogen and LCFA also involve other inhibitors, and the specific mechanisms are not fully understood.
Article
Agricultural Engineering
Prativa Mahato, Rajinikanth Rajagopal, Bernard Goyette, Suman Adhikary
Summary: This study investigates the technical feasibility of low-temperature, closed-loop two-stage anaerobic digesters for treating chicken manure as the sole feedstock. The results show that this technology can efficiently and stably produce methane with economic benefits.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Maria Jose Galvan, Salvador Degano, Mara Cagnolo, Analia Becker, Jorge Hilbert, Mauren Fuentes, Diego Acevedo
Summary: The co-digestion of pasteurized pig slaughterhouse waste (SW) and corn sieving waste (CSW) improved biogas yield compared to mono-digestion, with CSW being a suitable substrate to balance C/N and enhance biogas production. Optimal biogas yield and inhibition parameters were achieved with the lowest TS content and C/N ratios, particularly with a SW/CSW mixture of C/N 15 and 5% TS. Pilot scale experiments demonstrated significant increases in biogas yield, methane yield, and Organic Matter Removal using the C/N 15 mixture compared to C/N 20, with variations in gas composition but similar methane content at pilot scale.
BIOMASS & BIOENERGY
(2021)
Article
Environmental Sciences
Thiago Edwiges, Laercio Mantovani Frare, Joao Henrique Lima Alino, Jin Mi Triolo, Xavier Flotats, Monica Sarolli Silva de Mendonca Costa
ENVIRONMENTAL TECHNOLOGY
(2020)
Article
Engineering, Chemical
Pezhman Kazemi, Jean-Philippe Steyer, Christophe Bengoa, Josep Font, Jaume Giralt
Article
Agricultural Engineering
Angel Robles, Gabriel Capson-Tojo, Amandine Gales, Alexandre Viruela, Bruno Sialve, Aurora Seco, Jean-Philippe Steyer, Jose Ferrer
BIORESOURCE TECHNOLOGY
(2020)
Article
Environmental Sciences
Angel Robles, Gabriel Capson-Tojo, Amandine Gales, Maria Victoria Ruano, Bruno Sialve, Jose Ferrer, Jean-Philippe Steyer
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Green & Sustainable Science & Technology
Ulysse Bremond, Aude Bertrandias, Denis Loisel, Julie Jimenez, Jean-Philippe Steyer, Nicolas Bernet, Helene Carrere
Article
Multidisciplinary Sciences
Aya Yanagawa, Atsushi Kajiwara, Hiroki Nakajima, Elie Desmond-Le Quemener, Jean-Philippe Steyer, Vernard Lewis, Tomohiko Mitani
SCIENTIFIC REPORTS
(2020)
Article
Biotechnology & Applied Microbiology
J. Lacroux, E. Trably, N. Bernet, J-P Steyer, R. van Lis
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2020)
Article
Engineering, Environmental
Pezhman Kazemi, Jaume Giralt, Christophe Bengoa, Armin Masoumian, Jean-Philippe Steyer
WATER SCIENCE AND TECHNOLOGY
(2020)
Review
Environmental Sciences
Perrine Devos, Mathieu Haddad, Helene Carrere
Summary: The research examines the optimal temperature for Thermal Hydrolysis Process (THP) applied to municipal sludge, suggesting a temperature range of 140-160 degrees Celsius to minimize the production of refractory compounds and maximize anaerobic digestion and dewatering performance.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Energy & Fuels
Afifi Akhiar, Felipe Guilayn, Michel Torrijos, Audrey Battimelli, Abd Halim Shamsuddin, Helene Carrere
Summary: This study examines the variability of organic compounds in digestate liquid fractions based on substrate origin, process parameters, and solid-liquid separation techniques. Different clusters of liquid fractions were identified, with differences in chemical oxygen demand (COD) concentration linked to the proportion of cow manure and energy crops. An indicator for aromatic molecules content, SUVA(254), was associated with the hydraulic retention time (HRT).
Review
Green & Sustainable Science & Technology
Ulysse Bremond, Aude Bertrandias, Jean-Philippe Steyer, Nicolas Bernet, Helene Carrere
Summary: The future European Green Deal aims to reduce greenhouse gas emissions by 2030, with a focus on decarbonizing the gas sector and developing biomethane. The biogas sector is shifting towards utilizing organic wastes and agricultural by-products as feedstocks, upgrading biogas to biomethane for various applications, and reducing subsidy schemes to increase sustainability and reduce production costs. This article identifies and discusses key improvement tracks for the biogas sector to ensure growth towards 2030 and beyond.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Alexandre Mallet, Cyrille Charnier, Eric Latrille, Ryad Bendoula, Jean-Philippe Steyer, Jean-Michel Roger
Summary: Near infrared spectroscopy (NIRS) is used for organic waste management, with a customized system allowing simultaneous scanning of spectra and estimation of dry matter content during the drying process. Water effects on near infrared spectra are complex, involving both physical and chemical effects, and are influenced by sample characteristics and moisture levels.
Article
Engineering, Chemical
Victor Alcaraz-Gonzalez, Fabian Azael Fregoso-Sanchez, Victor Gonzalez-Alvarez, Jean-Philippe Steyer
Summary: A multivariable adaptive feedback control method for continuous anaerobic digestion processes is proposed to regulate various parameters and has been experimentally tested and shown potential for practical application in industrial digesters.
Article
Microbiology
Ulysse Bremond, Aude Bertrandias, Jerome Hamelin, Kim Milferstedt, Valerie Bru-Adan, Jean-Philippe Steyer, Nicolas Bernet, Helene Carrere
Summary: The recirculation of solid digestate with ligninolytic aerobic consortia did not increase methane recovery during the short-term aerobic post-treatment. The decrease in methane yields was attributed to the respiration of easily degradable fractions by the selected consortia.
Article
Green & Sustainable Science & Technology
C. VAN Vlierberghe, H. Carrere, N. Bernet, G. Santa-Catalina, S. Frederic, R. Escudie
Summary: This study compared the effects of field wilting and co-ensiling with wheat straw on the quality of ryegrass silage. The results showed that field wilting slowed down and decreased the occurrence of secondary fermentations, while the addition of straw did not change the fermentation pathway. In addition, methane potential was efficiently preserved in all conditions.
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)
