Article
Engineering, Chemical
Saikat Bhattacharjee, Sourav Mondal, Sirshendu De
Summary: This study investigates the transport of charged macro-solutes across perm-selective walls in a microchannel. The distribution of these solutes over the porous wall is described by the extended Nernst-Planck equation. The transverse electromigration of the charged solutes can either enhance or suppress concentration polarization and permeation rate, depending on the wall and solute surface potential. The findings of this study have implications for electrokinetic based drug delivery and separation systems involving charged solutes.
Article
Environmental Sciences
Behzad Ghanbarian, Yashar Mehmani, Brian Berkowitz
Summary: This study investigates the influence of pore-wall roughness on contaminant migration through particle tracking simulations and analyzes the resulting arrival time distributions using the CTRW approach. The results show that pore-wall roughness has a significant impact on the parameters t(1) and D, while the Peclet number has a greater impact on v and D.
WATER RESOURCES RESEARCH
(2023)
Article
Physics, Fluids & Plasmas
Deepak Mangal, Jacinta C. Conrad, Jeremy C. Palmer
Summary: In this study, the effects of physicochemical attractions on the transport of finite-sized particles in three-dimensional ordered nanopost arrays were investigated through Stokesian dynamics simulations. The results showed that weak particle-nanopost attractions had negligible effects on diffusion due to Brownian fluctuations. Strong attractions, on the other hand, significantly hindered particle diffusion by causing particle localization around the nanoposts. Under flow conditions, attractions enhanced longitudinal dispersion at low to moderate Péclet numbers. At high Péclet numbers, advection became dominant and attractions weakly enhanced dispersion. Additionally, attractions frustrated directional locking at moderate flow rates and shifted the onset of this behavior to higher Péclet numbers.
Article
Engineering, Geological
Alessandra Bonazzi, Birendra Jha, Felipe P. J. de Barros
Summary: Geomechanical parameters can affect the flow field and concentration distribution of solutes, while the loading frequency also plays a crucial role in regulating the temporal dynamics of the concentration field.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2021)
Article
Physics, Multidisciplinary
Alexandre Puyguiraud, Philippe Gouze, Marco Dentz
Summary: The study focuses on the interaction between pore-scale mixing and network-scale advection in porous media, and its impact on hydrodynamic dispersion evolution and behavior. By analyzing the fundamental mechanisms of pore-scale mixing in a Lagrangian framework, a theory is derived to predict anomalous and normal hydrodynamic dispersion based on pore length, velocity distribution, and Peclet number.
PHYSICAL REVIEW LETTERS
(2021)
Article
Engineering, Civil
Luwen Zhuang, Amir Raoof, Mojtaba G. Mahmoodlu, Sara Biekart, Riemer de Witte, Lubna Badi, Martinus Th van Genuchten, Kairong Lin
Summary: Hydrodynamic dispersion in soils is significantly influenced by soil water saturation, and there is a non-monotonic relationship between fluid saturation and solute dispersivity. The extent of non-monotonicity is more pronounced for a relatively coarse-textured sand compared to a finer sand, which helps explain some inconsistencies in the literature regarding saturation-dispersivity relationships.
JOURNAL OF HYDROLOGY
(2021)
Article
Geochemistry & Geophysics
Yan Zhu, Ziteng Cui, Kun Li, Chaoqi Wang, Zhao Li, Xueyi Zhang, Zhi Dou
Summary: This study quantitatively investigated the influence of the Peclet number and water saturation on adsorption behavior in unsaturated porous media. The results showed that water saturation had a significant influence on the complexity of the flow field, while the Peclet number had little influence on the maximum adsorption.
Article
Thermodynamics
Zhi Dou, Xueyi Zhang, Chao Zhuang, Yun Yang, Jinguo Wang, Zhifang Zhou
Summary: This study investigates the mass transfer of solutes through residual unsaturated porous media. The results show that the variation in residual saturation has a significant influence on the velocity spatial variability and breakthrough curves of aqueous tracer in the residual flow field. Different characteristics of solute transport are observed in different ranges of saturation, and the dispersivity of the mobile domain and the solute exchange between the mobile and immobile domains both contribute to the overall dispersivity.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Rishav Roy, Justin A. Weibel, Suresh Garimella
Summary: This study investigates the efflorescence patterns on sintered copper particle wicks with different particle sizes. It is found that smaller particles lead to earlier and wider spread of efflorescence due to their lower porosity, while larger particles limit efflorescence to certain areas. A scaling analysis explains the observed patterns by considering the nonuniform porosity and permeability induced by particle size, which reduces the advective flux and results in an exclusion distance where efflorescence does not occur.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Rishav Roy, Justin A. Weibel, Suresh Garimella
Summary: Understanding the dynamics of precipitation and crystallization as salt solutions evaporate from porous media is important for the preservation of historical monuments, understanding soil nutrient content, and designing porous evaporators. The study uses transient advection-diffusion equations to predict the solute mass fraction profile and formation of crystallized salt crust in porous media. The model is validated through crystallization experiments with a NaCl solution.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Mechanics
Chunwei Zhang, Kazuki Kaito, Yingxue Hu, Anindityo Patmonoaji, Shintaro Matsushita, Tetsuya Suekane
Summary: Solute transport in porous media is sensitive to heterogeneity at all scales, with pore-scale behavior affecting larger scales. Using a lattice Boltzmann method, simulations show that more heterogeneous media exhibit larger dispersion coefficients, with distinctive time regimes and power-law scaling observed for different types of rocks. The significance of mass transfer rate on mechanical dispersion is evaluated using the Damhohler number.
Article
Chemistry, Physical
Priyanka Koner, Subrata Bera, Hiroyuki Ohshima
Summary: The theoretical analysis of the mass transfer process in an oscillatory electroosmotic flow (EOF) is studied in a fractional Jeffrey fluid model with a polyelectrolyte layer (PEL) coated cylindrical annulus. The ion partitioning effect is observed due to the difference in permittivity between PEL and the electrolyte solution. Analytical solutions for induced potential and axial velocity are presented for both the PEL and electrolyte regions. The separation of species depends on various factors such as the Damkohler number, absorption parameter, and phase partitioning coefficient.
Article
Environmental Sciences
Aronne Dell'Oca, Marco Dentz
Summary: In this study, we focus on the upscaling and prediction of ensemble dispersion in two-dimensional heterogeneous porous media, specifically transverse dispersion. We investigate the stochastic dynamics of advective particles in the heterogeneous flow field and find that transverse dispersion exhibits ultraslow diffusion due to the solenoidal character of the flow field. By analyzing particle velocities and orientations through equidistant sampling along particle trajectories obtained from direct numerical simulations, we derive a stochastic model that combines correlated Gaussian noise for transverse motion and a spatial Markov model for particle speeds. We compare the model results with detailed numerical simulations in different heterogeneous porous media.
WATER RESOURCES RESEARCH
(2023)
Article
Multidisciplinary Sciences
Stefanie Van Offenwert, Veerle Cnudde, Marijn Boone, Tom Bultreys
Summary: The study found that pore-scale heterogeneity influences solute transport processes. Using X-ray micro-computed tomography, experiments were conducted to investigate the effect of heterogeneity on different porous materials.
Article
Metallurgy & Metallurgical Engineering
Qingyou Han
Summary: This article examines the impact of solutes on grain formation, with experimental data suggesting a clear correlation between grain size and the solidification range of the alloy. Mechanisms related to grain refining operate under specific experimental conditions.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Environmental Sciences
Zafar Iqbal, Farhat Abbas, Muhammad Ibrahim, Tahir Imran Qureshi, Matin Gul, Abid Mahmood
Summary: The study investigated the risk of heavy metals on animal health via consumption of Brassica rapa grown with wastewater, tube-well, and canal water in the outskirts of Multan City, Pakistan. It found that Brassica rapa grown with wastewater irrigation exhibited high carcinogenic health risk to animals, while those grown with canal water showed the lowest risk. Proper treatment of wastewater before application in agricultural fields could help safeguard the health of animals, public, and the ecosystem.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Hassan Afzaal, Aitazaz A. Farooque, Arnold W. Schumann, Nazar Hussain, Andrew McKenzie-Gopsill, Travis Esau, Farhat Abbas, Bishnu Acharya
Summary: This study evaluated the potential of using machine vision combined with deep learning to identify early blight disease in potato production systems. By training CNN models, the study accurately classified the disease at various growth stages, with EfficientNet performing the best.
Article
Agriculture, Multidisciplinary
Nazar Hussain, Aitazaz A. Farooque, Arnold W. Schumann, Farhat Abbas, Bishnu Acharya, Andrew McKenzie-Gopsill, Ryan Barrett, Hassan Afzaal, Qamar U. Zaman, Muhammad J. M. Cheema
Summary: The study demonstrated the efficacy of using deep convolutional neural networks (DCNNs) for detecting lamb's quarters in potato fields, with Efficient Net coupled with the PyTorch framework achieving the highest accuracy at every growth stage. The trained models showed great potential for automation of spraying systems in potato fields for precise and environmentally safe weed control.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Article
Environmental Sciences
Z. Iqbal, F. Abbas, M. Ibrahim, A. Mahmood, M. Gul, T. Imran Qureshi
Summary: The study assessed the Potential Ecological Risk Index (PERI) of soils in suburban Multan city, Pakistan, and found that soil under industrial effluents had very high ecological risk, while soil under urban sewage had moderate risk, and soil under tube-well and canal water had low risk. Statistical analysis indicated that soil contamination is sourced from wastewater, and proper treatment of wastewater before its use in agricultural farming system may save the health of the ecosystem.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Sana Ehsan, Farhat Abbas, Muhammad Ibrahim, Bashir Ahmad, Aitazaz A. Farooque
Summary: This study examines thermal discomfort levels, building design concepts, and heat mitigation strategies in low-income neighborhoods of Faisalabad, Pakistan. The results show that May had the highest discomfort levels, with houses exposed to sunlight and lacking ventilation being more affected. Gender-biased heat mitigation strategies with medical, cultural, and customary backgrounds were identified in the participating communities.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Green & Sustainable Science & Technology
Farhat Abbas, Hafiz Mohkum Hammad, Farhat Anwar, Aitazaz Ahsan Farooque, Rashid Jawad, Hafiz Faiq Bakhat, Muhammad Asif Naeem, Sajjad Ahmad, Saeed Ahmad Qaisrani
Summary: The results of the study demonstrate that the nitrification inhibitor can boost crop growth, while the application of biochar can significantly enhance soil fertility. Compared to synthetic nitrogen-phosphorus-potassium fertilizers, biochar application led to an increase in soil organic matter and nitrogen levels. The combination of 140g biochar per pot with 10mL of nitrification inhibitor resulted in the highest maize crop yields and protein content, indicating that this combination could be a promising nutrient management practice for sustainable agriculture.
Article
Green & Sustainable Science & Technology
Urooj Kanwal, Muhammad Ibrahim, Farhat Abbas, Muhammad Yamin, Fariha Jabeen, Anam Shahzadi, Aitazaz A. Farooque, Muhammad Imtiaz, Allah Ditta, Shafaqat Ali
Summary: This study utilized the hedge plant-calico and citric acid to investigate the remediation of lead-contaminated soil, finding that the plant responded well to low Pb concentrations and growth parameters, while enzymatic activities were reduced at higher concentrations and electrolyte leakage increased.
Review
Green & Sustainable Science & Technology
Ahmad Zeeshan Bhatti, Aitazaz Ahsan Farooque, Nicholas Krouglicof, Qing Li, Wayne Peters, Farhat Abbas, Bishnu Acharya
Summary: Climate change is impacting different parts of Canada in a diverse manner, with noticeable changes in temperature and precipitation. Some regions are experiencing more significant impacts, such as the reduction of Arctic ice. Short intense precipitation patterns may require re-designing of urban drainage and hydraulic structures.
Article
Environmental Sciences
Z. Iqbal, F. Abbas, A. Mahmood, M. Ibrahim, M. Gul, M. Yamin, B. Aslam, M. Imtiaz, N. N. Elahi, T. Qureshi, G. Z. H. Sial
Summary: The study in Pakistan revealed a potential carcinogenic risk from heavy metal contaminated groundwater near the city of Multan, with groundwater under wastewater irrigation fields posing a higher health risk compared to tube-well water sites. The analysis suggests that monitoring and treating wastewater for irrigation could help preserve the quality of groundwater and reduce health risks to the local community.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Ripendra Awal, Almoutaz El Hassan, Farhat Abbas, Ali Fares, Haimanote K. Bayabil, Ram L. Ray, Selamawit Woldesenbet
Summary: The study found that chicken manure released significantly more nutrients compared to dairy manure and Milorganite(TM), while Milorganite(TM) released phosphorus at a slower rate. The type and application rate of the amendments have an impact on the dynamics of nutrient release.
Article
Agronomy
Aitazaz Ahsan Farooque, Hassan Afzaal, Farhat Abbas, Melanie Bos, Junaid Maqsood, Xander Wang, Nazar Hussain
Summary: The study found that deep learning models performed well in ETo forecasting, with the ConvLSTM model showing lower errors compared to CNN and LSTM models. The robustness and accuracy of these forecasted models may help farmers, water resource managers, and irrigation planners with improved and sustainable water management at the basin level, and for irrigation scheduling at farm/field level.
IRRIGATION SCIENCE
(2022)
Article
Engineering, Civil
Junaid Maqsood, Aitazaz A. Farooque, Farhat Abbas, Travis Esau, Xander Wang, Bishnu Acharya, Hassan Afzaal
Summary: This study examined the response of evapotranspiration to climate change using artificial neural networks and the Canadian Earth System Model. The results showed significant changes in evapotranspiration under different climate change scenarios. The findings are important for decision makers and water resource managers in planning for future water availability.
WATER RESOURCES MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Rimsha Khan, Amna Abbas, Aitazaz A. Farooque, Farhat Abbas, Xander Wang
Summary: This study evaluated the role of organic amendments in increasing carbon sequestration potential and mitigating greenhouse gas emissions from potato fields. The results showed that organic amendments significantly sequestered more soil organic carbon and helped reduce CO2 emissions. Soil temperature and rainfall events had a significant impact on soil moisture and temperature, which in turn affected greenhouse gas emissions.
Article
Computer Science, Information Systems
Usman Ali, Travis J. Esau, Aitazaz A. Farooque, Qamar U. Zaman, Farhat Abbas, Mathieu F. Bilodeau
Summary: This paper evaluates the efficiency of machine learning in limiting the use of ground truth data for land use and land cover maps, and achieves high accuracy results.
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
(2022)
Article
Agricultural Engineering
Humna Khan, Travis J. Esau, Aitazaz A. Farooque, Farhat Abbas, Qamar Uz Zaman, Ryan Barrett, Bishnu Acharya
Summary: A study conducted in Prince Edward Island, Canada, revealed that factors such as ground electrical conductivity, soil moisture, soil organic matter content, and phosphorus play significant roles in affecting potato tuber yield. These influential variables showed different correlations with tuber yield at different growth stages.
APPLIED ENGINEERING IN AGRICULTURE
(2021)
