Article
Energy & Fuels
Robert Herrmann-Heber, Florian Ristau, Ehsan Mohseni, Sebastian Felix Reinecke, Uwe Hampel
Summary: The study showed that micro-perforated tube diffusers and micro-perforated plate diffusers outperformed commercial membrane diffusers by up to 44% and 20%, respectively, in terms of oxygen transfer efficiency. The improved oxygen transfer was attributed to fine bubble aeration and more homogeneous bubble distribution. However, the pressure drop of micro-perforated diffusers seems to be a limiting factor for their standard aeration efficiencies.
Article
Agricultural Engineering
Anamika Yadav, Avinash Kumar, Sudipto Sarkar
Summary: Optimizing the geometric parameters of the venturi aeration system can achieve the best performance, including maximum standard oxygen transfer rate and standard aeration efficiency. The experiments showed that NDSAE is related to Reynolds number and Froude number.
AQUACULTURAL ENGINEERING
(2021)
Article
Engineering, Environmental
Ahmed Shawki Ahmed, Diego Rosso, Domenico Santoro, George Nakhla
Summary: This study investigated the impact of bioreactor configurations on aeration modeling dynamics by incorporating different correlations. It was found that different correlations had varying effects on predicting air flow rates and that bioreactor structure not only affected spatial and temporal biological oxygen demands, but also oxygen transfer efficiency. The study established the suitability of different correlations for designing specific bioreactor systems, highlighting the need for considering the impact of influent loading rates on the alpha-factor.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Environmental Sciences
Gustavo Andres Baquero-Rodriguez, Sandra Martinez, Julian Acuna, Daniel Nolasco, Diego Rosso
Summary: This study assessed the effects of elevation on the suitability of wastewater treatment process configurations and technologies. The results showed that elevation limits the selection of diffused aeration technologies and lower driving force for oxygen transfer leads to higher operating costs. The study recommends designing appropriate treatment processes for high elevation areas.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Construction & Building Technology
Razak Olu-Ajayi, Hafiz Alaka, Ismail Sulaimon, Funlade Sunmola, Saheed Ajayi
Summary: This study employs machine learning techniques to predict annual building energy consumption, finding Deep Neural Network as the most efficient predictive model, aiding in energy optimization at the early design phase.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Chemical
Ammar Thamir Hamad, Layth Abdulaleem Mahmood, Mohammad Salim Mahmood
Summary: This study investigated the oxygen transfer in a water basin using a perforated disk spray. The results showed that the oxygen mass transfer coefficient was directly related to the fall height and flow rate of water. The multilinear regression-based model successfully predicted the mass transfer coefficient and standard aeration efficiency, with good agreement with actual measurements.
DESALINATION AND WATER TREATMENT
(2022)
Article
Engineering, Chemical
Ilaria Rizzardi, Aldo Bottino, Gustavo Capannelli, Marcello Pagliero, Camilla Costa, Daniele Matteucci, Antonio Comite
Summary: The use of porous membranes can improve the oxygen transfer efficiency at the gas/liquid interface, leading to better aeration in full-scale systems. Compared to traditional disk diffusers, the membrane module operates at lower air flow rates and achieves higher efficiency. However, scaling phenomena were observed on the membrane surface.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Environmental Sciences
Passaworn Warunyuwong, Tsuyoshi Imai
Summary: An air-water interface generator is a promising apparatus for enhancing oxygen transfer, which increases the contact area between air and water. The study found that an air flow rate of approximately 31.5-32.5 m(3)/hr per m(3)of water could achieve satisfactory levels of oxygen transfer. Additionally, an empirical model with an error of +/- 40% was proposed, which estimated an enhancement of around 30% in volumetric oxygen transfer coefficient.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Cheng Lu, Wen Cheng, Shengnan Zhou, Min Wang, Jikai Liu, Tian Wan
Summary: The study found that the mass transfer efficiency decreases as the micropore aperture increases from 200 to 400 μm. The reduction rate was 7.17% when the aperture increased from 200 to 300 μm, lower than that from 300 to 400 μm (19.17%). In addition, the micropore aperture showed a positive correlation with the time-averaged velocity field.
Article
Environmental Sciences
Ihsanullah Sohoo, Marco Ritzkowski, Kerstin Kuchta
Summary: Research has shown that the moisture content and leachate recirculation in post aeration phase of landfill operation have an impact on the oxygen consumption and waste stabilization. Optimal air distribution in the presence of low moisture can enhance waste oxidization and stabilization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
Iosif Asteriadis, Konstantinos Azis, Spyridon Ntougias, Paraschos Melidis
Summary: This study applied the ASM1 model to predict the aeration cost of an IAFB treating domestic wastewater, finding that a DO cascade controller can reduce energy consumption without significantly affecting nitrification rate. Higher DO concentrations may lead to overaeration, significantly increasing the aeration cost.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Li-Yuan Chen, Yen-Tang Chen, Yu-Hsien Chen, Da-Sheng Lee
Summary: Obtaining an accurate picture of energy consumption in public spaces is crucial for predicting and enhancing energy efficiency. In this study, a four-year dataset from a department store in Taiwan was used to build an artificial intelligence model (STL) for predicting energy consumption. The STL model outperformed other neural network mechanisms and provided a framework for building predictive models in public spaces and further discussions on energy efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Muideen Adegoke, Alaka Hafiz, Saheed Ajayi, Razak Olu-Ajayi
Summary: Building energy efficiency is crucial, and a high-accuracy energy prediction model is proposed to understand and optimize energy consumption. The multilayer extreme learning machine (MLELM) combines autoencoders with an extreme learning machine to achieve efficient feature extraction and decision-making, outperforming other methods commonly used in building energy consumption prediction.
Article
Agricultural Engineering
Jiehui Ren, Wen Cheng, Meng Jiao, Tian Wan, Min Wang, Dong Li
Summary: The study indicated that suitable aeration rates in a laboratory-scale aerobic fluidized bed biofilm reactor can enhance the oxygen mass transfer process and microbial community structure, leading to improved efficiency in municipal wastewater treatment.
BIORESOURCE TECHNOLOGY
(2021)
Article
Polymer Science
Junjun Tao, Longwei Pan, Jiajie Yao, Longfei Liu, Qiang Chen
Summary: The purpose of this study is to analyze the reliability of predictive models for higher heating values related to organic materials. A theoretical model was developed to establish correlations between elemental composition and calorific values. The analysis indicates significant variations in bond dissociation energies of carbon atoms and the negative impact of oxygen atoms on combustion heat. The coefficient associated with carbon mass fraction has the greatest impact on result prediction accuracy.
Article
Automation & Control Systems
H. Al Ba'ba'a, M. Nouh
JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME
(2019)
Article
Multidisciplinary Sciences
H. Al Ba'ba'a, M. Nouh, T. Singh
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2019)
Article
Materials Science, Multidisciplinary
Hasan Al Ba'ba'a, Jesse Callanan, Mostafa Nouh
FRONTIERS IN MATERIALS
(2019)
Article
Physics, Applied
H. Al Ba'ba'a, S. Nandi, T. Singh, M. Nouh
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Multidisciplinary Sciences
Kyung Hoon Lee, Kunhao Yu, Hasan Al Ba'ba'a, An Xin, Zhangzhengrong Feng, Qiming Wang
Article
Engineering, Mechanical
Hasan Al Ba'ba'a, Kunhao Yu, Qiming Wang
EXTREME MECHANICS LETTERS
(2020)
Article
Multidisciplinary Sciences
H. Al Ba'ba'a, X. Zhu, Q. Wang
Summary: This study introduces a class of architected inertial metamaterials (AIMs) to address the inherent inability of mechanical topological systems to exhibit negative elastic or inertial couplings. The potential of AIMs is demonstrated through three examples, showing their ability to design mechanical lattices with novel topological and dispersion traits.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Instruments & Instrumentation
Z. Lin, H. Al Ba'ba'a, S. Tol
Summary: This paper investigates an electromechanical metastructure for harvesting and attenuation of traveling wave energy. The metastructure is capable of achieving maximum energy conversion and vibration mitigation through locally-resonant and Bragg band gaps. Experimental results validate the theoretical models and applicability of the proposed metastructure.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Physics, Applied
Hasan Al Ba'ba'a, Zhenkun Lin, Serife Tol
Summary: This study reports a novel electromechanical metamaterial called SEMM, which utilizes its electromechanical resonant effects to achieve enhanced and tunable damping properties. The scissor-like structure in SEMM amplifies the damping ratio through a displacement amplification mechanism, improving vibration mitigation. By quantifying the relative dissipation performance based on complex band structures, SEMM demonstrates higher damping performance compared to traditional systems through numerical verification and analysis. The electromechanical nature of piezoelectric material in SEMM allows for convenient tuning of the damping properties by adjusting the piezoelectric shunting circuit.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Kyung Hoon Lee, Hasan Al Ba'ba'a, Kunhao Yu, Ketian Li, Yanchu Zhang, Haixu Du, Sami F. Masri, Qiming Wang
Summary: This study presents a magnetoactive acoustic topological transistor that can switch on and off topological states and reconfigure topological edges using external magnetic fields. By tuning the air-cavity volumes within acoustic chambers and utilizing a non-topological band gap, the switching of topological transport and the construction of topological field-effect waveguides and wave regulators are demonstrated.
Article
Multidisciplinary Sciences
Hasan B. B. Al Ba'ba'a, Carson L. Willey, Vincent W. W. Chen, Abigail T. Juhl, Mostafa Nouh
Summary: This paper investigates the vibrational spectrum of finite phononic crystals in the form of one-dimensional rods and explains the factors that contribute to the origination of truncation resonances. By identifying a unit cell symmetry parameter, a family of finite phononic rods is defined. A transfer matrix method is utilized to derive closed-form expressions of the characteristic equations governing the natural frequencies and decipher the truncation resonances. This study establishes concrete connections between the localized vibrations, boundary conditions, and the configuration of the truncated chain, providing tools for predicting, tuning, and selectively designing truncation resonances.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Acoustics
Hasan B. Al Ba'ba'a
Summary: The definition of Brillouin zone (BZ) in a class of non-reciprocal Willis monatomic lattices (WMLs) is quantitatively analyzed. It is found that BZ boundaries only shift in response to non-reciprocity in one-dimensional WMLs, resulting in a constant BZ width. The dispersion diagrams exhibit unequal wavenumber ranges for forward and backward going waves. A similar phenomenon is observed in square WMLs, where shifted and irregularly shaped BZs emerge while maintaining constant areas regardless of non-reciprocity strength.
JASA EXPRESS LETTERS
(2023)
Article
Acoustics
Hasan B. Al Ba'ba'a, Kyung Hoon Lee, Qiming Wang
Summary: This article demonstrates the potential of using electroacoustic analogies to design topological acoustic lattices and compares it with the full three-dimensional model. The established analytical framework is of great importance for designing acoustic topological insulators with minimal computational cost.
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
(2023)
Article
Materials Science, Multidisciplinary
Hrishikesh Danawe, Heqiu Li, Hasan Al Ba'ba'a, Serife Tol
Summary: This research investigates the emergence of special corner modes in elastic twisted kagome lattices, which are localized at specific corners independent of the overall shape. The existence of these modes is attributed to charge accumulation at the boundary, confirmed by the charge distribution plot in a finite lattice.
Proceedings Paper
Medicine, Research & Experimental
H. Al Ba'ba'a, T. Singh, M. Nouh
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS XII
(2018)
