Article
Energy & Fuels
Esau A. Hernandez, Gabriela Sanchez-Reyna, Jorge Ancheyta
Summary: In the face of lacking an equation to predict important characteristics of new biofuels, thirty mixing rules originally developed to calculate the viscosity of petroleum and its fractions were tested. Among them, the Lederer equation exhibited the best performance to predict the viscosity of binary blends of biodiesel with petrodiesel, with an estimation error below 4.29% and a residual balance indicating no tendency of over- or under-estimate values.
Article
Engineering, Environmental
Mateusz Bartczak, Kamil Wierzchowski, Maciej Pilarek
Summary: The aim of this study was to determine a quantitative characteristic of mixing time in a ReadyToProcess WAVE 25 system equipped with a 2-litre Cellbag disposable container using a sensor method and the Design of Experiment methodology. A set of original formulas for generalization of experimental data and predicting mixing time values in different sized disposable bag-like containers has been proposed.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Deyin Gu, Tao Yang, Longfei Xie
Summary: Fractal perforating impeller was introduced to improve the mixing performance of shear-thinning fluids with yield stress in a stirred reactor. Experimental analyses and numerical simulation showed that the fractal spaces in the impeller blades reduced power consumption and improved mixing efficiency. The fractal-3 perforating impeller achieved significant reductions in power consumption and mixing time compared with other impellers. The introduction of fractal spaces in the impeller blades also reduced the size of trailing vortices and promoted fluid mixing.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Russell Miller, Jan Sefcik, Leo Lue
Summary: Diffusion controls the local concentration profiles at the interfaces between segregated fluid elements during mixing processes. In antisolvent crystallization, a thermodynamically consistent approach can prevent significant supersaturation overshoots and localized liquid-liquid spinodal demixing may occur during the diffusive mixing process, providing a novel explanation for differences in nucleation behaviors among different antisolvents.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Multidisciplinary Sciences
Haechan An, Hal Owens, Hamza Ather, Ali Shakouri, Mahdi Hosseini
Summary: The study finds that adding an amplified four-wave mixing process in optical nonlinear media can reduce relative intensity noise and generate multiple correlated quadruple modes.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Chemical
Maria Carolina Sergi Gomes, Wardleison Martins Moreira, Sirlei Marques Paschoal, Caroline Casagrande Sipoli, Rubia Michele Suzuki, Juliana Guerra Sgorlon, Nehemias Curvelo Pereira
Summary: This study aimed to evaluate fouling mechanisms in biodiesel separation and purification using ceramic membranes. Experimental results showed that the amount of water added influences separation performance and the predominant fouling mechanism is dependent on water concentration and membrane pore diameter. Complete pore blocking is the most recommended condition for glycerol separation efficiency in this process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Dina Mistry, Maria Litvinova, Ana Pastore y Piontti, Matteo Chinazzi, Laura Fumanelli, Marcelo F. C. Gomes, Syed A. Haque, Quan-Hui Liu, Kunpeng Mu, Xinyue Xiong, M. Elizabeth Halloran, Ira M. Longini, Stefano Merler, Marco Ajelli, Alessandro Vespignani
Summary: Mathematical and computational modeling approaches are increasingly used in analyzing and predicting infectious disease epidemics. A data-driven approach has been proposed to generate effective population-level contact matrices, improving the realism in addressing complex public health questions.
NATURE COMMUNICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Dong Hyun Kim, Hyung Ju Yoo, Young Jun Bang, Seung Oh Lee
Summary: This study quantifies the process of sediment flocculation and changes in turbidity in rivers using clay and turbidity as indicators. The researchers found that the flow characteristics of rivers have a significant impact on the flocculation process, which is important for the management of pollutants in rivers.
Article
Nanoscience & Nanotechnology
Yoshiyuki Komoda, Tomoya Date
Summary: This study investigates the usefulness of an anchor-type impeller in enhancing two-dimensional fluid mixing under a laminar regime. Numerical simulations and experimental observations show that an appropriate central clearance size can prevent the segmentation of mixing regions and improve the uniformity of fluid mixing.
Article
Physics, Fluids & Plasmas
P. M. Thibado, J. C. Neu, Pradeep Kumar, Surendra Singh, L. L. Bonilla
Summary: This article theoretically considers a graphene ripple as a Brownian particle coupled to an energy storage circuit. When the circuit and particle are at the same temperature, harvesting energy from the thermal motion of the Brownian particle is forbidden, even with a rectifying diode in the circuit. However, when the circuit contains a junction followed by two diodes wired in opposition, the approach to equilibrium becomes extremely slow. Detailed balance is temporarily broken as current flows between the diodes and charges storage capacitors. The energy harvested by each capacitor comes from the thermal bath of the diodes while the system obeys the first and second laws of thermodynamics.
Article
Water Resources
Joaquim Soler-Sagarra, Maarten W. Saaltink, Albert Nardi, Francesca De Gaspari, Jesus Carrera
Summary: This article describes a formulation called the Water Mixing Approach (WMA) to solve reactive transport problems. The WMA represents transport as mixing water instead of individual solute concentrations, simplifying calculations and decoupling transport from chemistry. The article presents the implementation of WMA in a mixed Eulerian-Lagrangian transport solver and tests its accuracy, simplicity, and efficiency in three real-world cases.
ADVANCES IN WATER RESOURCES
(2022)
Article
Energy & Fuels
Saanyol Ityokumbul Igbax, Daniel Swartling, Ahmed Elsawy, Stephen Idem
Summary: This study investigates the use of waste vegetable oil (WVO) and virgin canola oil for biodiesel production, and explores the impact of production parameters such as temperature, catalyst concentration, and free fatty acid (FFA) content on the yield. Ultrasonic mixing and a Raspberry Pi 3 microcomputer are used to automate the production process and enhance mixing efficiency.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Hematology
Susan M. Shea, Philip C. Spinella, Kimberly A. Thomas
Summary: This study evaluated the impact of storage conditions on the function of cold stored platelets (CS-PLT). The results showed that storage duration, rather than storage condition, affected the phenotype and function of platelets. The study suggests that CS-PLT can be stored with or without agitation, and with or without daily mixing, without significantly altering hemostatic function.
Article
Mechanics
Edwin De Jong, Mark L. van der Klok, Jaap M. J. Den Toonder, Patrick R. Onck
Summary: Capillary forces are commonly used in microfluidic systems, but mixing small fluid volumes is challenging due to laminar flow. This study shows that by compressing the capillary interaction between droplets and deforming surfaces, vortex-like flow patterns can be generated to effectively mix droplet contents. Two strategies were introduced to quantify mixing performance, independent of initial solute distribution within a droplet. These results can be used to design efficient droplet mixers using mechanowetting as a new enabling technology.
Article
Computer Science, Interdisciplinary Applications
K. S. Yin, T. Xiao, H. Y. Luo, H. F. Zou, L. M. Zhang
Summary: Deep cement mixing (DCM) is an effective ground improvement technique that involves injecting dry cement or cement slurry into the ground. This study focuses on the spatial variation of unconfined compressive strength (UCS) in DCM clusters in a marine clay area. Variograms and random field modeling were used to analyze the spatial variability and autocorrelation structure of UCS data. The study compares the spatial magnitude, uniformity, and variability of site-wide UCS before and after the construction of DCM clusters.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Belmiro P. M. Duarte, Nuno M. C. Oliveira, Lino O. Santos
COMPUTERS & INDUSTRIAL ENGINEERING
(2016)
Article
Automation & Control Systems
Ana S. R. Brasio, Andrey Romanenko, Natercia C. P. Fernandes, Lino O. Santos
JOURNAL OF PROCESS CONTROL
(2016)
Article
Engineering, Chemical
Joao R. Leal, Andrey Romanenko, Lino O. Santos
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2017)
Article
Polymer Science
Pawel Krys, Marco Fantin, Patricia V. Mendonca, Carlos M. R. Abreu, Tamaz Guliashvili, Jaquelino Rosa, Lino O. Santos, Armenio C. Serra, Krzysztof Matyjaszewski, Jorge F. J. Coelho
Article
Engineering, Chemical
Natercia C. P. Fernandes, Andrey Romanenko, Marco S. Reis
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Engineering, Chemical
Belmiro P. M. Duarte, Andre M. M. Goncalves, Lino O. Santos
Summary: This study addresses the problem of finding optimal production and inventory policies in a multiproduct bakery unit, proposing formulations for deterministic and stochastic consumption scenarios. The models are tested using different demand and inventory levels to characterize the economic performance of the multiproduct bakery unit.
Proceedings Paper
Computer Science, Theory & Methods
Andreia Amador, Florbela P. Fernandes, Lino O. Santos, Andrey Romanenko, Ana Maria A. C. Rocha
COMPUTATIONAL SCIENCE AND ITS APPLICATIONS (ICCSA 2018), PT II
(2018)
Proceedings Paper
Mathematics, Applied
Joao C. Seica, Andrey Romanenko, Florbela P. Fernandes, Lino O. Santos, Natercia C. P. Fernandes
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2016 (ICNAAM-2016)
(2017)
Proceedings Paper
Mathematics, Applied
Andreia Amador, Florbela P. Fernandes, Lino O. Santos, Andrey Romanenko
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2016 (ICNAAM-2016)
(2017)
Proceedings Paper
Automation & Control Systems
Ana S. R. Brasio, Andrey Romanenko, Natercia C. P. Fernandes
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)