Results 31 to 40 of about 45,249 (286)

Transport and Deposition of Variably Charged Soil Colloids in Saturated Porous Media

Vadose Zone Journal, 2011
A series of column experiments was conducted to investigate the transport and deposition of variably charged colloids in saturated porous media. Soil colloids with diameters
Anu Sharma, Ken Kawamoto, Per Moldrup, Lis Wollesen deJonge, Toshiko Komatsu   +4 more
doaj   +1 more source

Network Modelling of Fluid Retention Behaviour in Unsaturated Soils [PDF]

, 2016
The paper describes discrete modelling of the retention behaviour of unsaturated porous materials. A network approach is used within a statistical volume element (SVE), suitable for subsequent use in hydro-mechanical analysis and incorporation within ...
Athanasiadis, Ignatios, Grassl, Peter, Wheeler, Simon J.   +2 more
core   +2 more sources

Combined effects of soil colloid and soil extracellular enzymes on nitrogen loss from sloping farmland

Geoderma
The extracellular enzyme plays a crucial role in nitrogen (N) conversion. Soil colloid serves as an important transporter of N transport in hydrological processes.
Xuekai Jing, Qingwen Zhang, Shanghong Chen, Yulong Shi, Li Zheng, Dinghui Liu, Mingxiang Xu   +6 more
doaj   +1 more source

Dynamics of magnesium in rangeland areas of Southeastern region of the State Rio Grande do Sul/Brazil. 2. Correlations

Pesquisa Agropecuária Gaúcha, 2022
We aimed to evaluate the dynamics of magnesium (Mg) in the soil - plant – animal chain. It was conducted in two natural rangeland areas on two types of undisturbed (virgin) soils (medium/clayey texture) in the Serra do Sudeste (Rio Grande do Sul State ...
Ana Carolina Fluck, Hero Alfaya, Michelle de Almeida Ollé, João Gilberto Corrêa da Silva, José Carlos Leite Reis   +4 more
doaj   +1 more source

Effect of surface modification on single-walled carbon nanotube retention and transport in saturated and unsaturated porous media [PDF]

, 2012
This work investigated the effect of different surface modification methods, including oxidization, surfactant coating, and humic acid coating, on single-walled carbon nanotube (SWNT) stability and their mobility in granular porous media under various ...
Gao, Bin, Morales, Veronica L., Tian, Yuan, Wang, Yu, Wu, Lei   +4 more
core   +3 more sources

COLLOID RELEASE AND E. COLI TRANSPORT IN INTACT AGRICULTURAL SOIL COLUMNS

Journal of Urban and Environmental Engineering, 2012
During animal waste agricultural applications, the major concern is the pathogen spreading, which may contaminate groundwater. Colloid release and pathogen transport during irrigation were evaluated in intact agricultural soil columns in this research ...
Gang Chen, Kamal Tawfiq, Sandip Patil
doaj   +2 more sources

Extraction of humic acid by coacervate: Investigation of direct and back processes [PDF]

, 2012
The two aqueous phases extraction process is widely used in environmental clean up of industrial effluents and fine chemical products for their reuse.
Derriche, Zoubir, Ghouas, Halima, Gourdon, Christophe, Haddou, Boumediene, Kameche, Mohamed   +4 more
core   +3 more sources

Organo-mineral associations and size-fractionated colloidal organic carbon dynamics in a redox-controlled wetland

Geoderma, 2023
The formation of organo-mineral associations serves as a crucial mechanism for stabilizing soil organic matter, particularly for determining the fate of soil organic carbon (OC) in redox dynamic wetlands characterized by high C content.
Mohammad Zafar Afsar, Bruce Vasilas, Yan Jin   +2 more
doaj   +1 more source

Acidity of edge surface sites of montmorillonite and kaolinite [PDF]

, 2013
Peer ...
Cheng, Jun, Liu, Xiandong, Lu, Xiancai, Meijer, Evert Jan, Sprik, Michiel, Wang, Rucheng   +5 more
core   +1 more source

Natural colloid mobilization and leaching in wettable and water repellent soil under saturated condition

Journal of Hydrology and Hydromechanics, 2018
The coupled transport of pollutants that are adsorbed to colloidal particles has always been a major topic for environmental sciences due to many unfavorable effects on soils and groundwater.
Sepehrnia Nasrollah, Fishkis Olga, Huwe Bernd, Bachmann Jörg   +3 more
doaj   +1 more source