Journal ArticleDOI
Influence of organic carbon loading, sediment associated metal oxide content and sediment grain size distributions upon Cryptosporidium parvum removal during riverbank filtration operations, Sonoma County, CA
TLDR
Although the grain-surface metal oxides were found to have a high colloid-removal capacity, this study suggested that any major changes within the watershed that would result in long-term alterations in either the quantity and (or) the character of the river's DOC could alter the effectiveness of pathogen removal during RBF operations.About:
This article is published in Water Research.The article was published on 2010-02-01. It has received 27 citations till now. The article focuses on the topics: Dissolved organic carbon & Organic matter.read more
Citations
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Journal ArticleDOI
Transport and Fate of Microbial Pathogens in Agricultural Settings
Scott A. Bradford,Verónica L. Morales,Wei Zhang,Ronald W. Harvey,Aaron I. Packman,Arvind Mohanram,Claire Welty +6 more
TL;DR: In this article, a number of transport pathways, processes, factors, and mathematical models often are needed to describe pathogen fate in agricultural settings, and the level of complexity is dramatically enhanced by soil heterogeneity, as well as by temporal variability in temperature, water inputs, and pathogen sources.
Journal ArticleDOI
Colloid Adhesive Parameters for Chemically Heterogeneous Porous Media
TL;DR: The model results show that the PDFs of colloid adhesive parameters at the REA scale were sensitive to the size of the colloid and the heterogeneity, the charge and number of grid cells, and the ionic strength.
Journal ArticleDOI
Modeling colloid and microorganism transport and release with transients in solution ionic strength
TL;DR: A calibrated model provided a satisfactory description of the observed release behavior for a range of colloid types and sizes and a general theoretical foundation to develop predictions for the influence of solution chemistry on the transport, retention, and release of colloids.
Journal ArticleDOI
Inorganic Geochemistry and Redox Dynamics in Bank Filtration Settings
TL;DR: This review presents the four main geochemical processes relevant for inorganic geochemistry, with a focus on iron (Fe) and manganese (Mn), during bank filtration: reduction near the bank, oxidation near the production well, carbonate dissolution, and sorption to aquifer materials.
Journal ArticleDOI
Removal of polystyrene microplastic spheres by alum-based coagulation-flocculation-sedimentation (CFS) treatment of surface waters
TL;DR: In this paper, the removal of carboxylated polystyrene (PS) microspheres in a wide size range (3, 6, 25, 45, and 90μm) in two types of real surface waters (Grand River and Lake Erie water) that are sources for full-scale drinking water treatment plants was investigated.
References
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Book ChapterDOI
Transport of microorganisms in the terrestrial subsurface: in situ and laboratory methods.
TL;DR: In this article, the authors describe and discuss laboratory and field techniques for studying microbial transport behavior in aquifer materials and model porous media, and discuss the characteristics of the conservative tracer breakthrough curve, which is used comparatively to determine some of the major transport parameters exhibited by the introduced microorganisms.
Journal ArticleDOI
Microspheres as Surrogates for Cryptosporidium Filtration
Monica B. Emelko,Peter M. Huck +1 more
TL;DR: In this article, a pilot-scale study was conducted to determine if polystyrene microspheres are reasonable surrogates for Cryptosporidium parvum removal by filtration.
Journal ArticleDOI
Influence of Surface Characteristics on the Stability of Cryptosporidium parvum Oocysts
TL;DR: Capillary electrophoresis results indicated that oocysts which were washed in a phosphate buffer solution had neutrally charged surfaces, implying that precipitate enmeshment may be the optimal mechanism of coagulation for removal of oocyst in water treatment systems.
Journal ArticleDOI
Analysis of pumping‐induced unsaturated regions beneath a perennial river
TL;DR: In this article, the authors investigated the impact of varying the ratio of the aquifer to streambed permeability on the formation of an unsaturated region beneath the stream, the pumping capacity, stream water fluxes through the streambed, and stream water traveltimes to the collector wells.
Journal ArticleDOI
Use of Cell Culture To Assess Cryptosporidium parvum Survival Rates in Natural Groundwaters and Surface Waters
TL;DR: In the case of C parvum in aquifer and reservoir waters of Florida, the inactivation rates ranged from 00088 log(10)/day at 5 degrees C to -020 log( 10/day at 30 degrees C Temperature, surface water or groundwater type, and the interaction of these factors had statistically significant effects on the survival of Cparvum.
Related Papers (5)
Evaluation of microspheres as surrogates for Cryptosporidium parvum oocysts in filtration experiments.
Xiaojun Dai,Raymond M. Hozalski +1 more