Article
Engineering, Environmental
Calvin Lumban Gaol, Leonhard Ganzer, Soujatya Mukherjee, Hakan Alkan
Summary: The study investigated the impact of bacteria and their metabolism products on clogging in porous media using micromodels under high pressure, high temperature, and anaerobic conditions. Results showed in situ bacteria growth, biomass accumulation, biofilm formation, and gas production in the micromodels. Real-structure micromodels demonstrated a more significant impact of biomass straining in small pore throats on permeability reduction compared to artificial-structure micromodels.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
A. Y. A. Mohamed, A. Siggins, M. G. Healy, O. Fenton, D. O. Huallachain, P. Tuohy
Summary: This study proposes a novel hybrid coagulation-ISF system for treating dairy wastewater. The hybrid system shows better performance and operational lifetime compared to conventional ISF system, with higher hydraulic loading rates and improved effluent quality that complies with EU directives.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
A. Y. A. Mohamed, P. Tuohy, M. G. Healy, D. O. hUallachain, O. Fenton, A. Siggins
Summary: Intermittent sand filters (ISFs) are widely used for wastewater treatment in rural areas due to their simplicity and low cost. However, filter clogging reduces their operational lifetime. This study found that pre-treatment of dairy wastewater with coagulation can reduce clogging in ISFs and prolong their lifespan.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xuefeng Peng, Qixing Ji, John H. Angell, Patrick J. Kearns, Jennifer L. Bowen, Bess B. Ward
Summary: Salt marsh sediments are key sites for nitrogen cycling and a significant source of nitrous oxide (N2O) production and consumption. Fertilization can impact nitrogen dynamics, increasing the importance of nitrification in N2O production. Changes in specific substrate utilization rates reveal shifts in microbial community composition and functional gene expression in response to long-term fertilization.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yulong Yang, Tongjing Liu, Yanyue Li, Yuqi Li, Zhenjiang You, Mengting Zuo, Pengxiang Diwu, Rui Wang, Xing Zhang, Jinhui Liang
Summary: This study investigated the impact of tracer fluid flow velocity and porous medium permeability on dispersion phenomenon in core samples. Experimental data analysis revealed a linear relationship between dispersion coefficient, core permeability, and fluid velocity, demonstrating the effects of different flow conditions on tracer dispersion in porous media. These findings have implications for improving tracer flow understanding, injection parameter design, and interpretation of tracer concentration distribution in inter-well tracer tests.
APPLIED SCIENCES-BASEL
(2021)
Article
Agronomy
Hui Wang, Gang Ling, Mingyu Hu, Wene Wang, Xiaotao Hu
Summary: This study investigates the blockage characteristics of emitters in a drip irrigation system with a low-quality water source and analyzes the structure and element composition of the blockage material. The results show that the characteristics of blockage are influenced by sediment concentration and particle size, and different types of emitters have different blockage positions within the drip irrigation tape.
Article
Engineering, Civil
Yongwei Gong, Fei Gao, Yan Hao, Guohong Zhang, Xiaojuan Bai, Hua Yang, Haiyan Li, Wei Zhang, Linmei Nie
Summary: Bioretention systems reduce rainfall runoff and improve runoff quality. However, there is limited research on the factors that affect the permeability of the media used in these systems. This study analyzes the influence of different factors on the permeability performance of bioretention systems and finds that the composition of the media, plant selection, influent load, and submerged area all affect the permeability. Proper material composition and plant selection improve penetration performance, while a higher influent SS load has a more adverse effect on permeability. The setting of a submerged zone reduces permeability and anti-clogging performance.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Environmental
Xuan Kou, Xiao-Sen Li, Yi Wang, Rui Xu, Zhao-Yang Chen
Summary: This study achieved the controllable process of heterogeneous hydrate phase transition at a macroscale and successfully realized different distribution patterns of hydrates. The observations revealed that water and gas transfer in pores governed the kinetic of heterogeneous hydrate phase transition. A new sequence of nucleation-growth-migration driven by water migration for heterogeneous hydrate formation was proposed, and it was found that the phase transition rates between heterogeneous and homogeneous hydrate differed by 2 to 3 times due to mass migration. These findings are important for explaining the enrichment of methane hydrate in marine sediment and developing targeted approaches to natural gas hydrate production, as well as indicating the feasibility of hydrocarbon capture, storage, and transport using hydrate-based technologies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Xin Liu, M. Matti Maricq, Douglas A. Dobson
Summary: A new statistical capillary tube model is proposed to predict filtration efficiency and permeability of particulate filters. The model considers the filter media's porous structure as an assembly of curved capillary tubes with a statistical size distribution. Compared with the widely used spherical model, the capillary tube model provides additional permeability prediction and better filtration predictions over a wider range of porosity, including lower porosity of washcoated filters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Water Resources
Zhangjie Peng, Jill Edmondson, Ross Stirling, Daniel Green, Richard Dawson, Simon De-Ville, Virginia Stovin
Summary: This study introduces a new approach to characterise the impact of clogging of growing media in green infrastructure (GI) using fluorescent tracer particles. Results are compared for two contrasting growing media: Grey to Green Substrate (G2G) and Marie Curie Substrate (MCS). The study found that most sediment particles were retained on the surface of both growing media, but surface clogging in G2G caused a decrease in infiltration capacity. Sediment vertical movement was observed in both growing media, with particles travelling deeper in MCS due to its pore size distribution.
URBAN WATER JOURNAL
(2023)
Article
Engineering, Chemical
Ilgar Azizov, Marcin Dudek, Gisle Oye
Summary: This study demonstrates a microfluidic method for investigating the transport of dilute oil-in-water emulsions through porous media. Droplet size has a dramatic effect on pore clogging, with larger droplets facilitating the retention of smaller droplets.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Quirine Krol, Itzhak Fouxon, Pascal Corso, Markus Holzner
Summary: The study examines the validity of the commonly used Hagen-Poiseuille model of local resistance in porous media using direct numerical simulations, highlighting possible limitations and proposing a new constitutive model. Performance comparisons on three different artificial porous media show significant improvements in error reduction with the new model. The approach may have broad applications in network models of porous media built from intricate 3D images.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
A. Mazeikiene, R. Vaiskunaite, J. Sarko
Summary: This study found that using OG filter media significantly enhances the removal efficiency of PO4-P from biologically treated wastewater, meeting the required evaluation parameters and producing stable filtrate.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agronomy
Wenqian Zhang, Chang Lv, Xue Zhao, Aihong Dong, Wenquan Niu
Summary: The type of suspended particles significantly affects the clogging degree of emitters in drip irrigation technology, with Yellow River sand causing the most severe clogging and sodium bentonite causing the least. Suspended particles undergo two stages of sedimentation: rapid and slow.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Mathematics, Applied
Simon Zech, Nadja Ray, Raphael Schulz
Summary: Structural changes of the pore space and clogging phenomena are inherent to many porous media applications. However, numerical investigations of the related flow and transport problem remain challenging due to the degeneration of the hydrodynamic parameter porosity. The use of appropriate scalings enables numerical simulations for the combined, degenerating flow and transport problem.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
(2022)
Article
Agricultural Engineering
Erik Arvin, Lars-Flemming Pedersen
AQUACULTURAL ENGINEERING
(2015)
Article
Engineering, Environmental
Sune Thyge Ryssel, Erik Arvin, Hans-Christian Holten Lutzhoft, Mikael Emil Olsson, Zuzana Prochazkova, Hans-Jorgen Albrechtsen
Article
Engineering, Environmental
A. C. Hambly, E. Arvin, L. -F. Pedersen, P. B. Pedersen, B. Seredynska-Sobecka, C. A. Stedmon
Article
Environmental Sciences
Nanna I. Thomsen, Philip J. Binning, Ursula S. McKnight, Nina Tuxen, Poul L. Bjerg, Mads Troldborg
JOURNAL OF CONTAMINANT HYDROLOGY
(2016)
Article
Environmental Sciences
Erik Arvin, Allan Bardow, Henrik Spliid
JOURNAL OF WATER AND HEALTH
(2018)
Article
Environmental Sciences
Nicola Balbarini, Vinni Ronde, Pradip Maurya, Gianluca Fiandaca, Ingelise Moller, Knud Erik Klint, Anders V. Christiansen, Philip J. Binning, Poul L. Bjerg
WATER RESOURCES RESEARCH
(2018)
Article
Environmental Sciences
Jacob Baelum, Charlotte Scheutz, Julie C. Chambon, Christine Mosegaard Jensen, Rikke P. Brochmann, Philip Dennis, Troels Laier, Mette M. Broholm, Poul L. Bjerg, Philip J. Binning, Carsten S. Jacobsen
ENVIRONMENTAL POLLUTION
(2014)
Article
Environmental Sciences
Mathilde J. Hedegaard, Erik Arvin, Charlotte B. Corfitzen, Hans-Jorgen Albrechtsen
SCIENCE OF THE TOTAL ENVIRONMENT
(2014)
Article
Environmental Sciences
Jordi Palau, Massimo Marchesi, Julie C. C. Chambon, Ramon Aravena, Angels Canals, Philip J. Binning, Poul L. Bjerg, Neus Otero, Albert Soler
SCIENCE OF THE TOTAL ENVIRONMENT
(2014)
Article
Environmental Sciences
Niels Dossing Overheu, Nina Tuxen, John Flyvbjerg, Jens Aabling, Jens Asger Andersen, Jorn K. Pedersen, Tina Thyregod, Philip J. Binning, Poul L. Bjerg
SCIENCE OF THE TOTAL ENVIRONMENT
(2014)
Article
Environmental Sciences
Annette E. Rosenbom, Philip J. Binning, Jens Aamand, Arnaud Dechesne, Barth F. Smets, Anders R. Johnsen
SCIENCE OF THE TOTAL ENVIRONMENT
(2014)
Article
Engineering, Environmental
Elham Ramin, Dorottya S. Wagner, Lars Yde, Philip J. Binning, Michael R. Rasmussen, Peter Steen Mikkelsen, Benedek Gy Plosz
Article
Engineering, Environmental
Carson O. Lee, Rasmus Boe-Hansen, Sanin Musovic, Barth Smets, Hans-Jorgen Albrechtsen, Philip Binning
Article
Agricultural Engineering
Lars-Flemming Pedersen, Paula Rojas-Tirado, Erik Arvin, Per Bovbjerg Pedersen
AQUACULTURAL ENGINEERING
(2019)
Article
Agricultural Engineering
Mangera Samwel Mnyoro, Erik Arvin, Renalda N. Munubi, Sebastian W. Chenyambuga, Lars-Flemming Pedersen
Summary: The study found that water velocity significantly affects nitrification rates in fixed bed biofilters, with rates decreasing below 10.8 m h-1. Nitrification rates were positively correlated with TAN concentration at different water velocities, except at the lowest velocity.
AQUACULTURAL ENGINEERING
(2021)