Article
Agricultural Engineering
Nicolas Ramirez, Claudia Ubilla, Javiera Campos, Francisca Valencia, Carla Aburto, Carlos Vera, Andres Illanes, Cecilia Guerrero
Summary: The study evaluated the effects of operational variables on lactulose production by enzymatic transgalactosylation in fed-batch and repeated fed-batch. Feed flowrate and fructose to lactose molar ratio were the most significant variables affecting lactulose yield, productivity, and selectivity. The repeated fed-batch operation increased efficiency of biocatalyst use and accumulated productivity significantly compared to batch and fed-batch operations with the same biocatalyst.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yessin Ammar, Patrick Cognet, Michel Cabassud
Summary: A novel modelling methodology using artificial neural networks is proposed to develop a global model for predicting the time evolution of concentrations of all species in the reaction medium. Different recurrent neural networks are utilized to estimate specific species as a function of operating parameters and concentrations, which are then assembled into a complex global model. This approach successfully represents the kinetic evolution of chemical species under varied operating conditions, and the neural network-based global model is integrated into a hybrid model for transposing reactions to a semi-batch chemical reactor.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Environmental
Remy Lacroix, Emma Roubaud, Benjamin Erable, Luc Etcheverry, Alain Bergel, Regine Basseguy, Serge Da Silva
Summary: The study demonstrates that utilizing three-dimensional microbial anodes can increase current generation and COD removal rate simultaneously, and further improvements can be achieved by designing 3D anode geometrical arrangements. Replacing a monolithic 3D graphite anode with plates stacked on top of each other can provide a 20% gain. Moreover, switching from a two-compartment MEC to a three-compartment MEC design can further optimize hydrogen production performance by an additional 20%.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Emanuela Palomba, Valentina Tirelli, Elisabetta de Alteriis, Palma Parascandola, Carmine Landi, Stefano Mazzoleni, Massimo Sanchez
Summary: The study presents an application of flow cytometry (FCM) in analyzing the yeast cell cycle during a typical S. cerevisiae fed-batch culture, using different dyes to better define each cell cycle stage. The results offer novel insights into the real-time monitoring of S. cerevisiae bioprocesses using FCM cell cycle analysis.
Review
Chemistry, Multidisciplinary
Xin He, Kai Zhang, Zhiqiang Zhu, Zhangfa Tong, Xiao Liang
Summary: This review provides an overview of the 3D scaffold/host strategy for lithium metal anodes, including key stages such as material texture selection, lithiophilic modification, structural design, multi-strategy integration, and practical implementation. The advantages and drawbacks of scaffold/host materials are examined, and obstacles and design criteria for implementing this strategy are outlined. The factors affecting the electrochemical performances of scaffold/host materials are discussed, along with future development prospects.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Engineering, Environmental
Hui Zhu, Tingting Niu, Brian Shutes, Xinyi Wang, Chunguang He, Shengnan Hou
Summary: The combination of microbial fuel cells (MFCs) with constructed wetlands (CWs) has been found to enhance water purification efficiency and reduce gas emissions. Compared to batch-fed wetland systems (BF CWs), MFC-CWs showed higher pollutant removal efficiency and lower global warming potential (GWP). The reduced gas emissions in MFC-CWs were related to specific genes, and the integration of MFC also promoted microbial diversity.
Article
Electrochemistry
Isabelle M. D. Gonzaga, Aline R. Doria, Angela Moratalla, Katlin I. B. Eguiluz, Giancarlo R. Salazar-Banda, Pablo Canizares, Manuel A. Rodrigo, Cristina Saez
Summary: This study highlights the importance of selecting a suitable electrochemical cell for removing antibiotics from urine, with the microfluidic flow-through reactor showing superior performance in electrochemical oxidation. Photo-electrolysis results in faster removal of all antibiotics studied, emphasizing the significance of UV light-mediated electrochemical oxidation processes.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Zhuo Li, Qian Fu, Huaneng Su, Wei Yang, Hao Chen, Bo Zhang, Lun Hua, Qian Xu
Summary: This review summarizes the physiochemical principles and mathematical methods in BES models, which are crucial for the development of accurate models. The review provides a classification of existing models and discusses the methodology and additional methods used in these models. The advantages, disadvantages, extended applications, and future perspectives of the models are also discussed.
Article
Engineering, Environmental
Daniel Dzofou Ngoumelah, Falk Harnisch, Joerg Kretzschmar
Summary: Combining anaerobic digestion and microbial electrochemical technologies can have negative effects on pre-grown Geobacter spp.-dominated biofilm anodes. The study found that biofilms pre-grown for longer periods showed higher resistance against anaerobic digestion effluents, but their activity dropped significantly when exposed to these effluents. Inhibiting methanogens and applying microfiltration had positive effects on biofilm activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Gisela Nadal-Rey, Dale D. McClure, John M. Kavanagh, Benny Cassells, Sjef Cornelissen, David F. Fletcher, Krist Gernaey
Summary: The study presents a novel methodology using dynamic compartment models to simulate fed-batch fermentation processes, allowing for rapid characterization and assessment of the impact of gradients on process performance in industrial settings. The models were validated numerically and can be readily applied to various types of bioreactors and microorganisms.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Changsomba Chang, Pratima Gupta
Summary: This study analyzes the batch and fed-batch mode of the microbial peroxide-producing cell (MPPC) for lignin valorization. The results show that the fed-batch mode is more productive in converting lignin into high-value platform chemicals.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Review
Biotechnology & Applied Microbiology
Sarah Teworte, Koray Malci, Laura E. Walls, Murni Halim, Leonardo Rios-Solis
Summary: Advanced fed-batch microbioreactors and feeding technologies are able to closely mimic industrial cultivation practices and accelerate bioprocess development. Automation and microfluidic technologies enable continuous and precise feeding, while a holistic approach incorporating automation, experimental design, and model-based optimization significantly enhances process understanding and screening optimization.
BIOTECHNOLOGY ADVANCES
(2022)
Article
Biotechnology & Applied Microbiology
Konstantins Dubencovs, Janis Liepins, Arturs Suleiko, Anastasija Suleiko, Reinis Vangravs, Jana Kassaliete, Rita Scerbaka, Oskars Grigs
Summary: This study successfully achieved high cell density K. marxianus fed-batch cultivations by optimizing synthetic growth medium and feeding solution compositions. The maximal attained yeast biomass concentration was close to 70 g/L, with a 2-PE biosynthesis rate of 0.372 g/L/h and a yield of 74%.
FERMENTATION-BASEL
(2021)
Article
Polymer Science
Mohd Shaiful Sajab, Wan Nazihah Liyana Wan Jusoh, Denesh Mohan, Hatika Kaco, Rubiyah Baini
Summary: Investigated the adsorption performance of 3D printed functionalized nanocellulose adsorbent, finding that the pseudo-second order model and Langmuir model were better in describing the adsorption process, and the fixed-bed column achieved five adsorption-desorption cycles with satisfactory performance, though with slightly reduced adsorption capacity.
Article
Biotechnology & Applied Microbiology
Catherine Boy, Julie Lesage, Sandrine Alfenore, Nathalie Gorret, Stephane E. Guillouet
Summary: Strain robustness is crucial in ensuring the profit-ability of bioprocesses for producing recombinant molecules. The heterogeneity of populations has been identified as a source of instability in bio-processes, and its impact on strain stability was studied through various evaluations during well-controlled fedbatch cultures.
JOURNAL OF BIOTECHNOLOGY
(2023)
Article
Electrochemistry
Elisa Casula, Bongkyu Kim, Henry Chesson, Mirella Di Lorenzo, Michele Mascia
Summary: This study introduces a novel tubular SMFC design with a ceramic tube as a separator and structural support. A mathematical model is proposed to evaluate the impact of system design and soil properties on performance, providing valuable insights for optimal design and operational conditions for SMFCs.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Jesus Rodriguez, Laura Mais, Roberto Campana, Lorenza Piroddi, Michele Mascia, Jonas Gurauskis, Annalisa Vacca, Simonetta Palmas
Summary: This study reports a new procedure for low-cost Microbial Fuel Cells (MFCs) manufacture based on the optimization of the most expensive MFC components: separator and cathode. The new tubular MFC clay separators achieve the lowest thickness and cost to date, while the novel CuO cathode shows a high power density and remains stable during long-term operation. The economic analysis indicates a low cost for the proposed cell compared to other Ceramic-MFCs (C-MFCs) reported in the literature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Daniele Molognoni, Pau Bosch-Jimenez, Jordi Suarez, Monica Della Pirriera, Eduard Borras
Summary: Stack configuration of multiple bioelectrochemical system (BES) modules is considered the best option for successful scale-up, whether for electricity-producing microbial fuel cells (MFC) or for electricity-consuming microbial electrolysis or electrosynthesis cells (MEC or MES). Serially stacked BES are more appealing for energy conversion, with lower energy losses, although high-performing bioanodes in series-connected MEC/MES cells may cause voltage imbalance issues that can be addressed with cell balance systems (CBS).
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Laura Mais, Simonetta Palmas, Michele Mascia, Annalisa Vacca
Summary: This study investigated the effects of applied potential and chloride ions in the solution on the photoelectrocatalytic oxidation of diethyl phthalate (DEP) using TiO2 nanotubular anodes. The presence of chloride ions was found to negatively impact the degradation rate of DEP.
Review
Chemistry, Physical
Simonetta Palmas, Laura Mais, Michele Mascia, Annalisa Vacca
Summary: The article highlights the importance of utilizing renewable energy through photoelectrocatalytic processes, focusing on the trend of NT-TiO2 electrodes for wastewater treatment.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Biotechnology & Applied Microbiology
Daniele Molognoni, Maria Vega, Truus de Vrije, Ana Lopez Contreras, Montse Bosch, Pau Bosch-Jimenez, Eduard Borras
Summary: This study investigated glucose-based ABE electro-fermentation and found that setting the cathode potential (E-cat) at -0.8 V resulted in the optimal EF scenario for C. beijerinckii, leading to a higher specific growth rate and improved butanol production. The addition of 0.5 mM neutral red as a redox mediator further enhanced butanol productivity, with a very low energy consumption of 0.02 kWh/kg-butanol.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Arpita Nandy, Daniel Farkas, Belen Pepio-Tarrega, Sandra Martinez-Crespiera, Eduard Borras, Claudio Avignone-Rossa, Mirella Di Lorenzo
Summary: This study provides an in-depth assessment of the effect of several carbon-based cathode materials on the electrochemical performance of Soil Microbial Fuel Cells (SMFCs) for the first time. The results show that carbon nanofibers electrode doped with Fe (CNFFe) and Pt-doped carbon cloth (PtC) generate stable performances, with peak power densities of 25.5 and 30.4 mW m-2, respectively. The best electrochemical performance was obtained with graphite felt (GF), with a peak power density of 87.3 mW m-2.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Diana Losantos, Marti Aliaguilla, Daniele Molognoni, Miguel Gonzalez, Pau Bosch-Jimenez, Sonia Sanchis, Albert Guisasola, Eduard Borras
Summary: Bioelectrochemical systems (BES) are a promising technology for nitrogen removal and recovery from wastewater with low energy consumption. In this study, a double chamber, flat plate BES reactor was connected to an air stripping system to recover ammonium from wastewater. Optimal conditions for ammonium recovery were found at an external voltage of +0.2 V and an air flow rate of 150 mL min(-1).
CLEANER ENGINEERING AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
E. Borras, M. Aliaguilla, N. Bossa, S. Martinez-Crespiera, L. Huidobro, R. Schweiss, A. Schwenke, P. Bosch-Jimenez
Summary: This study developed two carbon-based platinum free air-cathodes for MDC reactors, with MnO2-GDE performing better at high overpotentials and CNF-Fe performing better at low overpotentials. MDC with MnO2-GDE showed higher output electrical current densities and desalination performance compared to MDC with CNF-Fe.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)