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
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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.
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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.
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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.
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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.
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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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Journal ArticleDOI
Transport of microspheres and indigenous bacteria through a sandy aquifer: Results of natural- and forced-gradient tracer experiments
TL;DR: In this paper, a diverse population of bacteria was collected and concentrated from groundwater a t the site, stained with a DNA-specific fluorochrome, and injected back into the aquifer, included with the injectate were a conservative tracer (Bror C1-) and bacteria-sized microspheres having carboxylated, carbonyl, or neutral surfaces.
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Modeling microbial transport in porous media: Traditional approaches and recent developments
TL;DR: Traditional modeling approaches used to predict the migration and removal of microorganisms in saturated porous media are systematically evaluated and recently proposed improvements to the most commonly used filtration model are discussed, with particular consideration of straining and microbe motility.
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Effects of natural organic matter and solution chemistry on the deposition and reentrainment of colloids in porous media.
TL;DR: It is proposed that under these solution conditions, particle deposition and reentrainment are the result of a dynamic process, in which particles are continuously captured and released from secondary minima.
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Relative Insignificance of Mineral Grain Zeta Potential to Colloid Transport in Geochemically Heterogeneous Porous Media
TL;DR: The role of mineral grains in the initial deposition kinetics of colloidal particles in geochemically heterogeneous porous media is investigated in this paper, where the role of ζ-(zeta)potential of minerals in initial deposition is investigated.
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The promise of bank filtration.
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Evaluation of microspheres as surrogates for Cryptosporidium parvum oocysts in filtration experiments.
Xiaojun Dai,Raymond M. Hozalski +1 more