Results 1 to 10 of about 24,895 (154)

Experimental investigations of colloid-associated metal mobility in mine-impacted wetland sediment [PDF]

Heliyon
Metal mining operations can release toxic metals to surrounding environments where site-specific conditions control the movement of contaminants.
Colleen O. Harper, Richard T. Amos
doaj   +2 more sources

Transport of Colloids and Colloid-facilitated Cadmium in a Sri Lankan Agricultural Soil

Journal of Water and Environment Technology, 2023
Naturally occurring colloids, particles of diameter < 2 μm, are ubiquitous in geo environments and can potentially facilitate transport of numerous contaminants in soil via colloid-facilitated transport (CFT).
Balakrishnan Banithy, Thilini Gunawardhana, Chamindu Deepagoda   +2 more
doaj   +2 more sources

Effects of transient flow conditions on colloid-facilitated release of decabromodiphenyl ether: Implications for contaminant mobility at e-waste recycling sites [PDF]

Eco-Environment & Health
Polybrominated diphenyl ethers (PBDEs) are ubiquitous contaminants, especially in the soil and groundwater of contaminated sites and landfills. Notably, 2,2′,3,3′,4,4′,5,5′,6,6′-decabromodiphenyl ether (BDE-209), one of the most frequently and abundantly
Yueyue Li, Zebin Huo, Yuqin Ying, Lin Duan, Chuanjia Jiang, Wei Chen   +5 more
doaj   +2 more sources

A Novel Image Processing Approach for Colloid Detection in Saturated Porous Media [PDF]

Sensors
Over recent decades, natural and artificial colloids, as well as nanoparticles, have been increasingly used in various applications. Consequently, with this rising consumption, surface and subsurface environments are more exposed to these particles.
Behzad Mirzaei, Hossein Nezamabadi-pour, Amir Raoof, Vahid Nikpeyman, Enno de Vries, Reza Derakhshani   +5 more
doaj   +2 more sources

Colloid-Facilitated Transport of Radionuclides Through the Vadose Zone [PDF]

, 2003
In the previous reporting period, we have clarified the qualitative mineral transformation pathways when Hanford sediments are reacted with caustic Hanford tank waste. The major finding was that cancrinite, sodalite, zeolite A and allophane form when Hanford tank waste leaks into subsurface sediments. Cancrinite and sodalite are the most stable phases.
Flury, Markus, Lichtner, Peter C., McCarthy, John F.   +2 more
  +15 more sources

The coupled effect of bentonite colloid and radioactive ingrowth on the transport of actinide decay chains in a single fracture

Journal of Radiation Research and Applied Sciences, 2023
An analytical model is used to illustrate the colloid-facilitated transport of decay chain radionuclides (RNs) in the granitic fractured porous media.
Neng-Chuan Tien
doaj   +1 more source

Forest Soil Colloids Enhance Delivery of Phosphorus Into a Diffusive Gradient in Thin Films (DGT) Sink

Frontiers in Forests and Global Change, 2021
Phosphorus (P) is preferentially bound to colloids in soil. On the one hand, colloids may facilitate soil P leaching leading to a decrease of plant available P, but on the other hand they can carry P to plant roots, thus supporting the P uptake of plants.
Alexander Konrad, Benjamin Billiy, Philipp Regenbogen, Roland Bol, Friederike Lang, Erwin Klumpp, Jan Siemens   +6 more
doaj   +1 more source

Saturated Zone Colloid-Facilitated Transport [PDF]

, 2001
The purpose of the Saturated Zone Colloid-Facilitated Transport Analysis and Modeling Report (AMR), as outlined in its Work Direction and Planning Document (CRWMS M&O 1999a), is to provide retardation factors for colloids with irreversibly-attached radionuclides, such as plutonium, in the saturated zone (SZ) between their point of entrance from the ...
Wolfsberg, A., Reimus, P.
openaire   +2 more sources

Deposition and transport of functionalized carbon nanotubes in water-saturated sand columns [PDF]

, 2012
Knowledge of the fate and transport of functionalized carbon nanotubes (CNTs) in porous media is crucial to understand their environmental impacts. In this study, laboratory column and modeling experiments were conducted to mechanistically compare the ...
Carpena, Rafael Munoz, Gao, Bin, Huang, Qingguo, Morales, Veronica L., Tian, Yuan, Wang, Yu, Yang, Liuyan   +6 more
core   +3 more sources

Colloidal transport of heavy metals in low‐advective‐velocity environmental systems: Reactive transport model on biogeochemical and hydrodynamic impacts

Vadose Zone Journal, 2023
In this study, the impact of colloid facilitated transport of heavy metals on the overall biogeochemical processes is demonstrated in example Lake Coeurd'Alene sediments. Release and transport of heavy metals (Pb and Zn) on initially sorbed colloidal Fe (
S. Sevinç Şengör, Kahraman Ünlü
doaj   +1 more source