Percolation


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percolation

[pər·kə′lā·shən]
(computer science)
The transfer of needed data back from secondary storage devices to main storage.
(hydrology)
Gravity flow of groundwater through the pore spaces in rock or soil.
(mining engineering)
Gentle movement of a solvent through an ore bed in order to extract a mineral.
(science and technology)
Slow movement of a liquid through a porous material.

Percolation

 

a method used to leach ores in a fixed bed, mainly, copper oxides and gold ores; leaching by this method is called percolation leaching. The process is carried out in a percolator tank. The pulverized ore is uniformly loaded onto the tank’s false bottom, which is a filtering device. The leaching solution is introduced either from beneath the false bottom, a process called upward leaching, or onto the surface of the load, a process called downward leaching; accordingly, the solution is collected either above or below the false bottom.

percolation

The downward movement of water into soil.
References in periodicals archive ?
A key limitation to groundwater recharge is the lack of suitable percolation basins available for deliberate flooding.
The central purpose of this effort is to evaluate different modeling approaches that simulate the polymer-dependent percolation behaviors of nanostrand systems.
Blue Ocean Pharma LLC The Blue Ocean Pharma Group of companies consists of Percolation Communications LLC (www.
Therefore, the objectives of the study described here were to first, develop an empirical relationship between the saturated hydraulic conductivity (Ks) of layered silt loam soils and their percolation times (PT) in order to understand the influence of individual layers; and second, to statistically compare this relationship with the equations developed by Winneberger (1974) and Fritton and co-authors (1986).
If we only look for the percolation threshold, this test, performed for each plane along z, enables us to quickly stop the simulation when it does not percolate.
To describe this type of blocking, percolation theory is being used.
Detailed procedures for experimental determination of the filler percolation threshold in N234 filled BIMS using morphological methods can be found elsewhere (ref.
A simple thresholding (segmentation) could be used to isolate the porosity in the three-dimensional microstructure and examine percolation and transport properties such as conductivity [12] and permeability, as was performed previously for the microstructures obtained at the lower resolution [6].
Tillman Water Reclamation Plant in the Sepulveda basin and spread for percolation into potable water aquifers.
Stanbery, HelioVolt's founder, when made under the proper conditions CIGS spontaneously arranges itself at the nanoscale to create a percolation network that drastically reduces losses, making the material the most efficient and reliable thin-film for photovoltaics.
According to the percolation theory, a high real permittivity with a low leakage current in CPCs can only be realized at filler loadings very close to the percolation threshold [9, 13].
To this end, we developed a root zone soil water balance model to determine the deep percolation from applied water (irrigation) and rainfall between soil sampling dates for comparison with changes in soil profile salinity parameters that occurred at the control and test sites.