Article
Biotechnology & Applied Microbiology
Carolina Benevenuti, Marcelle Branco, Mariana do Nascimento-Correa, Alanna Botelho, Tatiana Ferreira, Priscilla Amaral
Summary: Adding Tween(R)80 in the culture medium can significantly increase ethanol and biomass production in syngas fermentation, offering a promising approach to enhance gas-liquid mass transfer and improve biofuel productivity.
FERMENTATION-BASEL
(2021)
Article
Mechanics
A. A. Arosemena, H. Ali, J. Solsvik
Summary: Data obtained from large eddy simulations were used to identify and characterize vortical structures in a baffled stirred tank reactor. Statistical analyses were performed to understand the size, shape, distribution and organization of the vortices, as well as their correlation with turbulence and blade passage. The influence of rotational speed and fluid rheology on the turbulent flow was also explored, along with potential implications for liquid-liquid and gas-liquid dispersed systems.
Article
Chemistry, Applied
Daniel Francis, A. John Blacker, Nikil Kapur, Stephen P. Marsden
Summary: The new modular photochemical continuous stirred-tank reactor (CSTR) design utilizes light-source units developed for the fReactor CSTR platform, making it suitable for both homogeneous and multiphasic reactions. By using slurries as input feeds, the system intensifies photochemical brominations, and its modular nature facilitates the integration of downstream reaction steps.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2022)
Article
Engineering, Chemical
Xia Xiong, Zuohua Liu, Changyuan Tao, Yundong Wang, Weiyang Fei
Summary: The baffle has a significant impact on the flow field instability in the stirred tank, with higher intensity in the overall tank and particularly in the vicinity of the baffle. The punched baffle and isolated baffle systems have lower power consumption and partially reduce the overall instability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Thermodynamics
Vandana Kumari Jha, Kaustav Banerjee, Soubhik Kumar Bhaumik
Summary: By utilizing a novel helical finned jacketed system, the HFJ configuration increases heat transfer area and thermal stability compared to the conventional HPJ system. Through detailed CFD analysis and stability analysis, it is proven that HFJ provides higher heat transfer rate, overall heat transfer coefficient, and faster response behavior, making it more suitable for control strategies.
APPLIED THERMAL ENGINEERING
(2021)
Article
Computer Science, Artificial Intelligence
Gongming Wang, Qing-Shan Jia, Junfei Qiao, Jing Bi, MengChu Zhou
Summary: This work introduces a deep learning-based model predictive control (DeepMPC) for modeling and controlling a continuous stirred-tank reactor (CSTR) system. DeepMPC achieves high performance in system identification and control through automatic determination of size and quadratic optimization.
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
(2021)
Article
Green & Sustainable Science & Technology
Hao Jiang, Wenchuan Hao, Yeqing Li, Hongjun Zhou
Summary: Biological methanation process is beneficial for upgrading anaerobic digestion, efficient utilization of surplus electricity and H-2, energy storage and peak regulation, as well as CO2 emission reduction. Continuous stirred tank reactor (CSTR) is an economical and convenient method for methanation. The study found that the reactor could run stably at a pH around 8.5, and CO2 flow was adjusted for pH control. Different stages of the process showed significant succession in the microbial community.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Hendrik Rehage, Joshua Orthey, Matthias Kind
Summary: The study explores how the particle size distribution of precipitated products is influenced by mixing, and the challenges faced when using stirred-tank reactors. Through experimental validation of the hypothesis, it is found that the Reynolds number does not affect the particle size distribution for flows dominated by meso or macro mixing.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
J. N. Delbridge, T. A. Barrett, A. Ducci, M. Micheletti
Summary: This study investigated the microcarrier suspension performance and flow fields in a scale-down mimic of Allegro STR single-use bioreactor range compared to a standard cylindrical configuration. It was found that the down-pumping mode in the A-STR achieved homogeneous suspension at a considerably lower power input compared to other configurations. Flow structures at the just-suspended condition were similar to those in the turbulent regime. Baffles significantly reduced the power input required for suspension, except for the A-STR (DP) configuration.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Mathematics, Applied
Shi Liu, Song Chen, Tehuan Chen, Zhigang Ren
Summary: This paper proposes a residual neural network-based observer for CSTR systems, which can quickly and accurately observe the state changes during the CSTR reaction.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2024)
Article
Engineering, Environmental
Jose Joaquin Gonzalez-Cortes, Sandra Torres-Herrera, Fernando Almenglo, Martin Ramirez, Domingo Cantero
Summary: The use of a continuous stirred tank bioreactor (CSTBR) under anoxic conditions for biogas desulfurization and S production was proposed. The optimal operating conditions were determined, resulting in high removal efficiency and sulfur production rates.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Ruiyong Zhang, Axel Schippers
Summary: Metals such as cobalt and copper can be recovered from mine tailings using acidophilic microbial consortia. The use of moderate thermophilic microbial consortia can further improve the metal recovery. Copper is mainly leached through acid leaching, while high cobalt extraction requires Fe(II)-oxidizing microbial activity.
MINERALS ENGINEERING
(2022)
Article
Engineering, Mechanical
Joo Young Bang, Nimish Pujara
Summary: We investigated random-jet-stirred homogeneous turbulence generated in a vertical octagonal prism-shaped tank with jet arrays on four of the eight vertical faces. We found that the turbulence is homogeneous at all scales in the central region of the tank, spanning multiple integral scales in all directions. Using four jet arrays allows for higher turbulence intensity and Reynolds number compared to previous facilities. By varying the array-to-array distance and algorithm parameters, we were able to control the turbulence scales and Reynolds number.
EXPERIMENTS IN FLUIDS
(2023)
Article
Engineering, Environmental
S. S. Hoseini, G. Najafi, B. Ghobadian, A. H. Akbarzadeh
Summary: This study investigates the importance of mixing in the chemical industry and proposes a computational framework for optimizing power consumption and impeller stress in stirred-tank reactors. By using Computational Fluid Dynamic (CFD) analysis, the study examines three types of impellers and utilizes Multi-objective Genetic Algorithm (MOGA) to optimize the geometrical parameters of the blades. The results show a decrease in power consumption with V- and U-shape impellers compared to the 6-blade Rushton turbine, and indicate differences in turbulent kinetic energy and stress distribution among different impeller designs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Engineering, Chemical
Luka Safaric, Annika Bjorn, Bo H. Svensson, David Bastviken, Sepehr Shakeri Yekta
Summary: Anaerobic digestion is an important technology for sustainability, but its optimization is challenging due to a lack of understanding of the interactions within the digesters. This study proposes a novel conceptual model and focuses on key operational parameters to improve our understanding and develop advanced strategies for operational optimization.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Bahdja Hayoun, Silvia Escudero-Curiel, Mustapha Bourouina, Saliha Bourouina-Bacha, Ma Angeles Sanroman, Marta Pazos
Summary: The study demonstrated that hydrochar prepared with citric acid (3 M) showed significantly improved adsorption efficiency for drugs, as well as enhanced structural and morphological properties of the adsorbent.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Crina Calenciuc, Antia Fdez-Sanroman, Gabriela Lama, Sivasankar Annamalai, Angeles Sanroman, Marta Pazos
Summary: This review presents the current state of using Advanced Oxidation Processes (AOPs) for soil remediation. The techniques are categorized into three types depending on the decontamination process. The review highlights the achievements of these technologies and emphasizes the need for further investigation and development.
Article
Engineering, Environmental
Veronica Poza-Nogueiras, Angela Moratalla, Marta Pazos, Angeles Sanroman, Cristina Saez, Manuel A. Rodrigo
Summary: In this research, a bench-scale installation was tested for the heterogeneous electro-Fenton treatment of clofibric acid. The use of a pressurized-jet aerator and iron-containing alginate beads as catalysts showed promising results in enhancing the efficiency of pollutant removal and reducing energy consumption. However, further increase in pressure did not lead to significant improvement. The integrity of the catalyst was not compromised by pressure. A mathematical model was also developed to better understand the behavior of the reaction system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Sara Caruncho-Perez, M. Prado-Comesanana, Maria Arellano, Marta Pazos, M. Angeles Sanroman, Elisa Gonzalez-Romero
Summary: Water quality is crucial for human and ecosystem health. This study aimed to develop a sensitive and selective methodology to create a customized portable device that can detect emerging pollutants in water. The results showed that this methodology allows for simpler and cheaper decentralized analysis without losing sensitivity. It also enables real-time electrochemical measurements without the need for sample treatment. The portable device offers comfort and high specificity in monitoring and improving water quality.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Antia Fdez-Sanroman, Marta Pazos, Angeles Sanroman
Summary: This study evaluated the removal of persistent emerging and dangerous pollutants (pharmaceuticals and pathogens) in synthetic wastewater using heterogeneous Advanced Oxidation Processes. The results showed that increasing the concentration of PMS and Basolite (R) F-300 improved the treatment efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Physical
Gabriela Lama, Jessica Meijide, Angeles Sanroman, Marta Pazos
Summary: Water pollution is a serious global environmental issue, with emerging pollutants posing risks to human and animal health. Advanced oxidation processes have been proposed as an effective technology for removing these pollutants. Recent research focuses on the use of different types of heterogeneous catalysts to overcome limitations of conventional treatment methods.
Article
Microbiology
Roberto Gonzalez-Gonzalez, Pablo Fucinos, Elisa Beneventi, Olalla Lopez-Lopez, Begona Pampin, Ramon Rodriguez, Maria Isabel Gonzalez-Siso, Jacobo Cruces, Maria Luisa Rua
Summary: The thermoalkalophilic membrane-associated esterase KLEST-3S showed high thermal stability, activity in organic solvents and detergents, and catalytic ability in various reactions, indicating its potential for industrial bioconversions.
Article
Biotechnology & Applied Microbiology
Abdelmageed M. M. Othman, Angeles Sanroman, Diego Moldes
Summary: In this study, it was found that the multi-point covalently immobilized laccase from Myceliophthora thermophila on the modified immobilized carrier (Immobead 150P) showed the best immobilization characteristics, retaining 95% of its initial activity after 10 cycles of operation at pH 3.0 and temperature 70 degrees C. The thermodynamic parameters of thermal inactivation demonstrated the positive impact of immobilization. The immobilized enzyme exhibited enhanced stability in alkaline conditions and the ability to provide hydrophobic properties to wood.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Aida M. Diez, Marta Pazos, M. Angeles Sanroman, Helen Valencia Naranjo, Joachim Mayer, Yury Kolen'ko
Summary: This study successfully synthesized and characterized fluoride-doped-TiO2 and demonstrated its applicability in solid-phase photodegradation of polyethylene films for the first time. After three weeks of UV A radiation using a low consumption LED lamp, the polyethylene films containing only 2% of the photocatalyst experienced nearly 50% weight loss, surpassing previously reported data. The results suggest the potential for future production of self-photodegradable plastics for environmental and wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Antia Fdez-Sanroman, Barbara Lomba-Fernandez, Marta Pazos, Emilio Rosales, Angeles Sanroman
Summary: Three CuFe-MOFs with different structures were synthesized successfully by varying the ratio of solvents, salts, or temperature. CuFe(BDC-NH2)(D) and CuFe(BDC-NH2)(S) exhibited improved PMS activation for Rhodamine B removal, achieving a removal rate of around 92%. The best degradation system for a mixture of antibiotic and anti-inflammatory drugs was the photo-assisted activation of PMS using CuFe(BDC-NH2)(D) and CuFe(BDC-NH2)(S), resulting in complete degradation within 1 hour. CuFe(BDC-NH2)(R)/PMS showed higher antibacterial activity due to its higher copper content.
Article
Chemistry, Physical
Anton Puga, Emilio Rosales, Marta Pazos, Maria Angeles Sanroman
Summary: The synthesis of an iron catalyst (Fe-DES) was proposed in this work, which was characterized physically and chemically. The Fe-DES was shown to be a multipurpose catalyst that can be applied in various processes for the removal of pharmaceuticals in wastewater.
Article
Biotechnology & Applied Microbiology
Esin Balci, Emilio Rosales, Marta Pazos, Aysun Sofuoglu, Maria Angeles Sanroman
Summary: This study investigated the degradation of dibutyl phthalate (DBP) using esterase and lipase enzymes from different microorganisms, and examined the feasibility of immobilizing the most effective enzyme on a clayey material. The results showed that esterase from Bacillus subtilis had the highest degradation efficiency and immoblization improved thermal and storage stability. Additionally, the immobilized enzyme composite maintained high catalytic activity after 7 continuous cycles.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Review
Chemistry, Multidisciplinary
Maria Helena Macedo, Mafalda Neto, Lorenzo Pastrana, Catarina Goncalves, Miguel Xavier
Summary: Inflammatory bowel disease is a significant burden and effective therapies are needed. Cell-based in vitro models, such as immortalized cell lines and organoids, have been used to study intestinal inflammation. These models have shown improved physiological relevance but vary in complexity and inflammation induction methods. This review summarizes recent works on human intestinal inflammation models, aiming to assist in choosing the most suitable model for specific biological questions.
Review
Food Science & Technology
Silvia Escudero-Curiel, Alba Giraldez, Marta Pazos, Angeles Sanroman
Summary: Agri-food residues and by-products are recognized as valuable products that can be used in other industries, such as environmental remediation. These materials, transformed into biochar and hydrochar through engineering techniques, have substantial potential as versatile adsorbents in wastewater treatment and promising alternatives in various environmental and energy-related applications. This sustainable approach provides cost-effective and satisfactory solutions, addressing environmental concerns and paving the way for a more eco-friendly and resource-efficient future.
Article
Chemistry, Physical
Mohammad Tariq, Mario R. C. Soromenho, Manuel M. Pineiro, Martin Perez-Rodriguez, Dalip Kumar, Ana Rodriguez, Francisco J. Deive, Jose M. S. S. Esperanca
Summary: In this study, the phase equilibria of CO2 hydrates in H2O, D2O, and their binary mixtures were investigated. The results showed that there is a difference in the equilibrium line of CO2 hydrates formed in H2O and D2O, but the hydrate dissociation enthalpies were similar. The study also revealed the influence of isotopic effect on CO2 hydrate formation and dissociation, which may have implications for separation and purification processes.
JOURNAL OF MOLECULAR LIQUIDS
(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)
