Article
Agricultural Engineering
Anna Christine Trego, B. Conall Holohan, Ciara Keating, Alison Graham, Sandra O'Connor, Michael Gerardo, Dermot Hughes, Umer Zeeshan Ijaz, Vincent O'Flaherty
Summary: This study demonstrates the feasibility of high-rate, direct treatment of low-strength municipal wastewater at low temperatures for the first time. Efficient removal of BOD from wastewater and the discovery of a highly adaptable core microbiome provide a foundation for next-generation municipal wastewater treatment.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Maria Teresa Santos, Pedro Andre Lopes
Summary: The industrial sector produces large amounts of sludge, which can be treated and recovered using various methods. Through experiments, it was found that anaerobic co-digestion followed by the production of heterogeneous catalysts for biodiesel production is the most promising method.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Agricultural Engineering
Siming Chen, William Arnold, Natasha Wright, Kuang Zhu, Olutooni Ajayi, Paige Novak
Summary: The feasibility of implementing encapsulation technology for the biological anaerobic treatment of high-strength wastewater was investigated. The study found that encapsulation shows promise for small-footprint anaerobic biological treatment applications, although further optimization is needed.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Sergi Vinardell, Sergi Astals, Konrad Koch, Joan Mata-Alvarez, Joan Dosta
Summary: The study evaluated the economic implications of co-digesting sewage sludge and food waste in anaerobic membrane bioreactors. It found that higher electricity revenue from co-digesting food waste could offset additional costs, but not when treating nutrients backload in sidestream digesters. Biosolids disposal was identified as the most significant cost in all scenarios, and sensitivity analysis showed that food waste gate fee influenced co-digestion economic feasibility.
BIORESOURCE TECHNOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Nhlanganiso Ivan Madondo, Sudesh Rathilal, Babatunde Femi Bakare, Emmanuel Kweinor Tetteh
Summary: The application of a bioelectrochemical system together with anaerobic additives can promote both direct and indirect interspecies electron transfer, leading to higher removal of toxic pollutants and conversion of biomass to renewable energy. This review explores the synergistic effect of bioelectrochemical systems and anaerobic additives on the anaerobic digestion of complex substrates. It highlights the mechanisms and limitations of conventional anaerobic digestion and the applicability of additives in various activities of the digestion process. The findings suggest that a bioelectrochemical system coupled with nanomaterial additives can increase biogas-methane potential compared to anaerobic digestion, indicating the potential prospects of this system for wastewater treatment.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Green & Sustainable Science & Technology
Junjie Li, Chunxing Li, Yanlin Li, Ruming Wang, Mingdian Zhou, Lixin Zhao, Xiaofang Pan, Guanjing Cai, Nan Lv, Jing Ning, Irini Angelidaki, Gefu Zhu
Summary: The use of iron/carbon as conductive materials in anaerobic digestion has shown to improve methane production and dichlorophenol removal efficiency in wastewater treatment. The formation of galvanic cells between iron and carbon plays a significant role in acidification and anaerobic digestion processes, promoting the optimization of microbial community composition.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biochemistry & Molecular Biology
Yerkanat N. Kanafin, Dinara Kanafina, Simos Malamis, Evina Katsou, Vassilis J. Inglezakis, Stavros G. Poulopoulos, Elizabeth Arkhangelsky
Summary: The anaerobic membrane bioreactor (AnMBR) is a promising alternative for municipal wastewater treatment, offering advantages such as reduced sludge production and biogas generation. However, there are still challenges to be addressed, indicating the need for further research and development in this area.
Article
Engineering, Chemical
G. S. M. D. P. Sethunga, H. Enis Karahan, Rong Wang, Tae-Hyun Bae
Summary: Anaerobic wastewater treatment processes are increasingly popular due to their advantages in sludge management and net energy consumption, with methane production being a major benefit. Utilizing porous membranes for membrane contactor (MC) process offers a promising way to recover dissolved methane (dCH4) from anaerobic effluents, although membrane wetting and fouling remain implementation challenges. The development of wetting- and fouling-resistant hollow fiber membranes coated with polydimethylsiloxane (PDMS) and post-treated with PDMS-based amphiphilic copolymers shows improved performance in recovering methane from anaerobic effluents, making it a viable alternative for industrial practices.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Polymer Science
Gloria Amo-Duodu, Emmanuel Kweinor Tetteh, Sudesh Rathilal, Edward Kwaku Armah, Jeremiah Adedeji, Martha Noro Chollom, Maggie Chetty
Summary: This study investigated biostimulation of anaerobic digestion of municipality wastewater using various additives, with Fe3O4 additives showing the highest efficiency in terms of biogas production. The modified Gompertz model was identified as the most reliable kinetic model for evaluating the dynamics of biogas production.
Article
Environmental Sciences
Min Zhang, You-Sheng Liu, Jian-Liang Zhao, Wang-Rong Liu, Jun Chen, Qian-Qian Zhang, Liang-Ying He, Guang-Guo Ying
Summary: The removal efficiencies of antibiotics and antibiotic resistance genes in swine wastewater varied among three on-farm full-scale anaerobic digesters, with UASB and HDPE-BD showing better removal efficiencies than BBD. Pathogens could not be effectively removed by all three digesters, and accumulation of pathogens was found in UASB.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Mauricio Guimaraes de Oliveira, Jose Marcos Marques Mourao, Francisco Schiavon Souza Silva, Andre Bezerra Dos Santos, Erlon Lopes Pereira
Summary: The study found that the microaerobic reactor showed higher organic matter removal rates and operational stability in swine wastewater treatment, with microaerobic sludge demonstrating higher hydrolytic and methane-producing activity.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Mingwei Wang, Tengfei Ren, Mengxi Yin, Kechao Lu, Hui Xu, Xia Huang, Xiaoyuan Zhang
Summary: In this study, a binary electroactive material with pseudocapacitance/conductance was designed to store-release electrons and enhance direct electron transfer between acid-producing bacteria and methanogens in anaerobic wastewater treatment. The pseudocapacitance of the material promoted ATP synthesis and provided energy for organic decomposition, while the conductance facilitated direct interspecies electron transfer and improved methane production. The material also helped buffer excess electrons and alleviate pH drop. These findings provide a strategy to enhance electron transfer in anaerobic treatment and guide the design of electroactive materials.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Mariana Rodriguez-Jara, Alejandra Velasco-Perez, Jose Vian, Sergio E. Vigueras-Carmona, Hector Puebla
Summary: This paper presents the application of a control design based on the modeling error compensation technique for the anaerobic digestion of microalgae. The results show that achieving desired organic pollution levels and methanogenic biomass concentrations as well as minimizing the effect of external perturbations on a benchmark case study of the anaerobic digestion of microalgae is possible with the proposed control design.
FERMENTATION-BASEL
(2023)
Article
Agricultural Engineering
Anlong Zhang, Chuyue Gao, Tiantian Chen, Yili Xie, Xianbao Wang
Summary: The effects of salinity shock on the anaerobic treatment of fracturing wastewater were investigated. The results showed that salinity increase led to decreased COD removal efficiency and cumulative biogas production, as well as changes in sludge characteristics and microbial community structure.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Mauricio Guimaraes de Oliveira, Jose Marcos Marques Moura, Ana Katherinne Marques de Oliveira, Andre Bezerra dos Santos, Erlon Lopes Pereira
Summary: This study compared the performance of an up-flow anaerobic sludge blanket (UASB) reactor and an up-flow microaerobic sludge blanket (UMSB) reactor for swine wastewater treatment. The UMSB reactor showed better efficiency under higher organic loading rates, improving organic matter hydrolysis and methane production. Further investigation on strategies to control biomass washout is needed to optimize the UMSB reactor treatment.
Article
Materials Science, Multidisciplinary
Bruna G. de Souza, Gustavo Figueira, Maria H. Carvalho, Victor Alcaraz-Gonzalez, Karla E. Saldana-Flores, Mario Godinho Jr, Adilson J. A. de Oliveira, Ruth H. G. A. Kiminami, Luis A. M. Ruotolo, Ernesto A. Urquieta-Gonzalez
Summary: A novel unconventional coprecipitation procedure combined with a simple and fast microwave-assisted hydrothermal treatment was used to synthesize a new nanocrystalline magnetic cobalt ferrite with photo-Fenton activity. The study demonstrated that microwave hydrothermal treatment is essential for obtaining magnetic and photoactive Co-ferrite, with photoactivity mainly attributed to the migration of Co2+ ions during the MAH treatment.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Victor Alcaraz-Gonzalez, Guillermo Rodriguez-Valenzuela, Juan Jose Gomez-Martinez, Guilherme Luiz Dotto, Rene Alejandro Flores-Estrella
Summary: This paper proposes two control laws for a continuous Microbial Electrochemical Cells system to improve the electrical current and bio-hydrogen gas production. Numerical simulations show that both control laws can adequately respond to disturbances and achieve the desired setpoints. The highest rate of hydrogen production can be obtained by adjusting the applied potential, but only for a short period of time.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
Jose Eduardo Gabriel-Barajas, Jorge Arreola-Vargas, Alma Toledo-Cervantes, Hugo Oscar Mendez-Acosta, Juan Carlos Rivera-Gonzalez, Raul Snell-Castro
Summary: This study characterized the prokaryotic community and interactions between H-2-producing bacteria and non-H2PB in anaerobic sequencing batch biofilm reactors fed with tequila vinasses and acid hydrolysates of Agave tequilana var. azul bagasse. The results showed that H-2 production was supported by specific bacteria through the PFOR pathway, but competition for sugars and other factors allowed non-H2PB to increase in relative abundance during the fermentation process. This study demonstrated the feasibility of H-2 production by Clostridiales from acid hydrolysates of ATAB in co-digestion with tequila vinasses.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Energy & Fuels
E. Emilia Rios-Del Toro, Hetian Chi, Victor Gonzalez-Alvarez, Hugo O. Mendez-Acosta, Jorge Arreola-Vargas, Hao Liu
Summary: The tequila industry waste presents both environmental challenges and economic opportunities. This study demonstrates the potential of integrating biochemical and thermochemical platforms for the full conversion of Agave tequilana bagasse, aiming to enhance energy recovery and product utilization.
Article
Energy & Fuels
Irma Lopez-Gutierrez, Virginia Montiel-Corona, Luis Fernando Calderon-Soto, Rodolfo Palomo-Briones, Hugo Oscar Mendez-Acosta, Elias Razo-Flores, Aura Ontiveros-Valencia, Felipe Alatriste-Mondragon
Summary: Methane production from enzymatic hydrolysis of agave bagasse was evaluated in UASB and CSTR reactors, with UASB showing higher VMPR and COD removal due to longer SRT and less diverse microbial community composition. The use of Cellulase 50XL in UASB reactor demonstrated advantageous features for future industrial applications.
Article
Environmental Sciences
Armando Campos-Rodriguez, Marco A. Zarate-Navarro, Efren Aguilar-Garnica, Victor Alcaraz-Gonzalez, Juan Paulo Garcia-Sandoval
Summary: Anaerobic digestion is an efficient wastewater bioprocess suitable for agroindustrial residues with high organic loads, characterized by low environmental impact and energy generation. The process is sensitive to VFA and alkalinity, and the modified AM2 model includes more general pH expression and detailed interactions to improve stability. Rigorous bifurcation analysis has been conducted to explore the stability and viability of the modified model.
Article
Energy & Fuels
Rene Alejandro Flores-Estrella, Victor Alcaraz-Gonzalez, Andreas Haarstrick
Summary: The aim of this study is to propose a methodology for obtaining an effectiveness factor for biofilm in a microbial electrolysis cell (MEC) system and using it to reduce a partial differential equation (PDE) biofilm MEC model to an ordinary differential equation (ODE) MEC model. The effectiveness factors are obtained from partial differential equations describing the spatial distributions of potential and substrate in the biofilm. The reduced ODE model with uncertain but bounded effectiveness factors is evaluated numerically and shows good agreement with a validated model.
Article
Mathematics
Rosaura Hernandez-Montelongo, Javiera Salazar-Araya, Jacobo Hernandez-Montelongo, Juan Paulo Garcia-Sandoval
Summary: In this study, a mathematical model is proposed to describe the drug delivery from polymer coatings on implants. The model considers a unidirectional recursive diffusion process, taking into account the convective phenomena and the equilibrium between the polymer matrix and the liquid where the drug is released. The model is solved using Laplace transformation for two scenarios and validated with experimental data.
Article
Mathematics
Elena Hernandez, Octavio Manero, Fernando Bautista, Juan Paulo Garcia-Sandoval
Summary: This article discusses analytical solutions of nonlinear dynamical systems under oscillatory input that may exhibit harmonic frequencies. The key contribution is the use of analytic matrix methods and invariant submanifold to propose a direct infinite power series solution, speeding up computations. Compared to traditional methods, this approach allows for problem-solving in the regime of large-amplitude oscillations.
Article
Biotechnology & Applied Microbiology
Alma Toledo-Cervantes, Hugo Oscar Mendez-Acosta, Jorge Arreola-Vargas, Jose Eduardo Gabriel-Barajas, Mariana Nohely Aguilar-Mota, Raul Snell-Castro
Summary: This study investigates the prokaryotic community and microbial interactions involved in hydrogen (H-2) production during the dark fermentation (DF) process, using tequila vinasses as substrate. The results provide insights into the performance and limiting factors of the DF process using tequila vinasses.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Jorge Arreola-Vargas, Bing Xu, Cheng Hu, Xianzhi Meng, Yun-yan Wang, Arthur J. Ragauskas, Hugo Oscar Mendez-Acosta, Jose Antonio Perez-Pimienta, Susie Y. Dai, Joshua S. Yuan
Summary: This study proposes a systematic pretreatment method to release lignocellulosic fractions and produce medium-chain-length polyhydroxyalkanoates (PHA) from agave lignin. The results show that two-stage fermentation with optimized conditions significantly increases PHA production. This study opens new avenues for agave biorefineries.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Environmental Sciences
Siara Silvestri, Lizet Miriam Guevara Roman, Victor Alcaraz-Gonzalez, Elvis Carissimi
Summary: Bio-H-2 was produced through dark fermentation from granulated anaerobic sludge using rice husk as substrate. The solid residue generated in this process was used to produce a hydrochar capable of degrading rhodamine B dye and dicamba herbicide.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Computer Science, Information Systems
Marco A. Zarate-Navarro, Stevan Dubljevic, Armando Campos-Rodriguez, Efren Aguilar-Garnica, J. Paulo Garcia-Sandoval
Summary: This paper studies the stability properties and regulation of a class of convective systems described by first order hyperbolic partial differential equations with boundary recycle. The study finds that the difference of the entropy evaluated at the boundaries is directly proportional to the supply rate, fulfilling the dissipation inequality. A saturated Proportional-Integral controller with a cascade structure is proposed, which tracks an entropy reference and regulates a process variable. The controller is applied to an adiabatic plug flow reactor with a recycle of the output stream, and successfully tracks a set point facing several disturbances using the recycle rate as the control variable.
Proceedings Paper
Automation & Control Systems
Jose de Jesus Colin Robles, Ixbalank Torres, Victor Alcaraz Gonzalez
Summary: The paper proposes an optimization strategy for maximizing acetate production rate in continuous Dark Fermentation process using the golden section search algorithm. Luenberger observer and super-twisting observer are implemented to estimate influent chemical oxygen demand. The feasibility of the proposed online optimization strategy is demonstrated through simulations.
2021 EUROPEAN CONTROL CONFERENCE (ECC)
(2021)
