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3 edition of A model of virus transport in unsaturated soil found in the catalog.

A model of virus transport in unsaturated soil

M. V. Yates

A model of virus transport in unsaturated soil

project summary

by M. V. Yates

  • 119 Want to read
  • 24 Currently reading

Published by U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory in Ada, OK .
Written in English

    Subjects:
  • Viruses,
  • Soil physics

  • Edition Notes

    StatementM.V. Yates, S.R. Yates, and Y. Ouyang
    ContributionsYates, S. R, Ouyang, Y, Robert S. Kerr Environmental Research Laboratory
    The Physical Object
    FormatMicroform
    Pagination1 v
    ID Numbers
    Open LibraryOL14965885M

    source water by means of a computational model. B. Modeling Transport and Fate of Viruses during Soil Passage After a certain travel time and travel distance through soil, viruses are re-moved. Virus removal is the disappearance of viruses from the system and is defined in this context as the logarithmic reduction of virus concentration. To better understand how interactions with the air phase influence the movement of natural organic matter (NOM) through the vadose zone, we measured the transport of soil−humic acid (SHA) through laboratory columns packed with partially saturated sand. Our results demonstrate that sorptive reactions at air−water interfaces reduce SHA mobility and that the affinity of SHA .

    We present results on the migration of silica colloids through laboratory columns packed with partially saturated quartz sand. The transport of the silica colloids responds to changes in the steady-state volumetric moisture content (ϑ) and for low ϑ depends on the wetting history of the sand pack prior to colloid injection. A mathematical model that incorporates a first-order rate Cited by: Viral abundance in soils can range from below detection limits in hot deserts to over 1 billion per gram in wetlands. Abundance appears to be strongly influenced by water availability and temperature, but a lack of informational standards creates difficulties for cross-study analysis. Soil viral diversity is severely underestimated and undersampled, although current measures of Cited by:

    Emerging contaminants, such as hormones and pharmaceuticals, are widespread in the environment. Pathogens, which include viruses, bacteria or other microorganisms, are also creating major challenges as water resources dwindle and wastewater is reused. These emerging contaminants, pathogens and metabolites present unique challenges in understanding their . Groundwater pollution (also called groundwater contamination) occurs when pollutants are released to the ground and make their way down into type of water pollution can also occur naturally due to the presence of a minor and unwanted constituent, contaminant or impurity in the groundwater, in which case it is more likely referred to as contamination rather .


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A model of virus transport in unsaturated soil by M. V. Yates Download PDF EPUB FB2

United States Environmental Protection Agency Robert S. Kerr Environmental Research Laboratory Ada, OK Research and Development EPA//S/ Mar. EPA Project Summary A Model of Virus Transport in Unsaturated Soil M.V.

Yates, S. Yates, and Y. Ouyang As a result of the recently-proposed mandatory ground-water disinfection. EPA/// December A MODEL OF VIRUS TRANSPORT IN UNSATURATED SOIL by M.V. Yates Department of Soil & Environmental Sciences University of California Riverside, CA S.R.

Yates USDA/ARS U.S. Salinity Laboratory Riverside, CA Y. Ouyang Department of Soil & Environmental Sciences University of California Riverside, CA. Get this from a library. A model of virus transport in unsaturated soil. [M V Yates; S R Yates; Y Ouyang; Robert S. Kerr Environmental Research Laboratory.; University of California, Riverside.

Department of Soil and Environmental Sciences.]. Get this from a library. A model of virus transport in unsaturated soil: project summary. [M V Yates; S R Yates; Y Ouyang; Robert S. Kerr Environmental Research Laboratory.]. @article{osti_, title = {Mass Transport within Soils}, author = {McKone, Thomas E}, abstractNote = {Contaminants in soil can impact human health and the environment through a complex web of interactions.

Soils exist where the atmosphere, hydrosphere, geosphere, and biosphere converge. Soil is the thin outer zone of the earth's crust that supports rooted plants. A numerical model for one-dimensional virus transport in homogeneous, unsaturated porous media was developed.

The model accounts for virus. The purpose of this research was to develop a predictive model of virus fate and transport in unsaturated soils that allows the virus inactivation rate to vary on the basis of changes in soil.

Yates and Ouyang developed a numerical model, VIRTUS, for predicting virus fate and transport in unsaturated soils. In their model, the virus inactivation rate was allowed to vary on the basis of changes in soil temperature. Park et al. developed a numerical model, VIRALT, for simulating the virus transport in groundwater.

Virus transport experiments were conducted under both saturated and unsaturated flow conditions using the equipment shown in Fig. column used for saturated experiments consisted of a top and a bottom plate and was sealed by an o-ring on each end (the o-ring had no contact with inside of the column).Cited by: INTRODUCTION: THE THIRD AGE OF VIRUS ECOLOGY.

Viruses exist wherever life is found in the environment. Viruses are the most abundant biological entities on Earth, with an estimated total population size of > 10 30 viruses in the ocean alone (Breitbart and Rohwer ; Suttle ).Known as therapeutic tools before the s and model systems for modern biology Cited by:   Abstract.

Laboratory-scale virus transport experiments were conducted in columns packed with sand under saturated and unsaturated conditions. The viruses employed were the male-specific RNA coliphage, MS2, and the Salmonella typhimurium phage, PRD1. The mathematical model developed by Sim and Chrysikopoulos (Water Resour Res –, Cited by: Virus Transport through Heterogeneous Unsaturated Zone in Guwahati city in Assam under Transient state condition 2 inactivation rate, inactivation rates for sorbed versus free virus and the effect of soil type.

(Sim and Chyrysikopoulos, ) developed a one dimensional numerical model to investigate the. Most studies on virus transport through unsaturated porous media have been conducted under unsteady-state flow conditions (e.g., infiltration experiments), or in systems with nonuniform water distribution.

As such, it is very difficult to identify and examine the mechanisms responsible for the increased virus removal in unsaturated systems. Virus transport and interfacial interactions in saturated and unsaturated porous media.

Western Regional Soil Physics Committee (W) Meeting, Las Vegas, NV. You, Y., P. Chiu, and Y. Jin. Cleanup of bacteriophages MS2 and fX from aqueous system using zerovalent iron. Evaluation of subsurface microbial transport using indicators, surrogates and tracers Scope. The main intention of this chapter is to explain and describe available indicators, surrogates and tracers, as well as mathematical models for estimating the fate and transport of pathogenic microorganisms (pathogens) in the subsurface.

Analysis of Virus Transport in Groundwater and Identification of Transport Parameters, D. Ratha, K. Hari Prasad and C. Ojha,ASCE Practice Periodical of Hazardous, Toxic and Radioactive Waste Management, 13(2), The experimental data were fitted with a transport model to determine the adsorption (attachment and detachment rate) parameters.

Our results show that the retention of viruses in the soil column increases as water saturation decreases when the chemical conditions are favorable for adsorption (pH 7 and relatively high IS).Cited by: Study of bacterial transport and retention in soil is important for various environmental applications such as groundwater contamination and bioremediation of soil and water.

The main objective of this research was to quantitatively assess bacterial transport and deposition under saturated conditions in calcareous soil. This chapter describes and discusses laboratory and field techniques for studying microbial transport behavior in aquifer materials and model porous media.

Changes in ionic strength (I) during transport studies may occur inadvertently as a result of using halides as conservative tracers and may lead to density-induced sinking of the tracer by: Segmented mesocosms (n = 3) packed with sand, sandy loam or clay loam soil were used to determine the effect of soil texture and depth on transport of two septic tank effluent (STE)-borne microbial pathogen surrogates—green fluorescent protein-labeled E.

coli (GFPE) and MS-2 coliphage—in soil treatment units. HYDRUS 2D/3D software was used to model the transport Cited by: 9. Virus movement in soil during saturated and unsaturated flow was compared by adding poliovirus to sewage water and applying the water at different rates to a cm-long soil column equipped with ceramic samplers at different depths.

Movement of viruses during unsaturated flow of sewage through soil columns was much less than during saturated by: Voss, C.E.,SUTRA, A finite-element simulation model for saturated-unsaturated, fluid-density-dependent ground-water flow with energy transport or chemically-reactive single-species solute transport: U.S.

Geological Survey Water-Resources Investigations Reportp.It is used more for leaching in unsaturated soil, than for groundwater transport, because stream tubes are more unidirectional in soil (vertical) than in groundwater.

For the vertical transport of solute, the simplest model is the purely convective model. For the case of linear sorption, it Cited by: 2.