Factors that Influence the Transport of Bacillus cereus Spores through Sand

Kim, Minyoung; Boone, Stephanie A.; Gerba, Charles P.

doi:10.1007/s11270-008-9867-9

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…A sandy gravel layer of 2-3 m can be found between soil and groundwater. Pore size exclusion phenomena rather than hydrophobic interactions between spores and soil organic content seem to play an important role in the filtration process in soils [ 65 , 68 ]. However, an earlier study investigating infiltration processes in the same experimental site suggested that preferential flows observed during high rain events had a quantitative effect on this alluvial aquifer recharge in only isolated cases but could induce local short-term contamination of the groundwater [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

The Water Cycle, a Potential Source of the Bacterial PathogenBacillus cereus

Brillard

Dupont

Berge

et al. 2015

BioMed Research International

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The behaviour of the sporulating soil-dwelling Bacillus cereus sensu lato (B. cereus sl) which includes foodborne pathogenic strains has been extensively studied in relation to its various animal hosts. The aim of this environmental study was to investigate the water compartments (rain and soil water, as well as groundwater) closely linked to the primary B. cereus sl reservoir, for which available data are limited. B. cereus sl was present, primarily as spores, in all of the tested compartments of an agricultural site, including water from rain to groundwater through soil. During rain events, leachates collected after transfer through the soil eventually reached the groundwater and were loaded with B. cereus sl. In groundwater samples, newly introduced spores of a B. cereus model strain were able to germinate, and vegetative cells arising from this event were detected for up to 50 days. This first B. cereus sl investigation in the various types of interrelated environments suggests that the consideration of the aquatic compartment linked to soil and to climatic events should provide a better understanding of B. cereus sl ecology and thus be relevant for a more accurate risk assessment of food poisoning caused by B. cereus sl pathogenic strains.

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Section: Discussionmentioning

confidence: 99%

The Water Cycle, a Potential Source of the Bacterial PathogenBacillus cereus

Brillard

Dupont

Berge

et al. 2015

BioMed Research International

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“…To cope with it, two different size of soil columns were used, one column of 9.7 cm in length and 3.1 cm in diameter for the saturated hydraulic conductivity experiment and the other column of 20.0 cm in length and 9.0 cm in diameter for the tracer and nutrient leaching experiment [13] (Figure 1(a) and Figure 1(b)). The soils used in these experiments consisted of Jumunjin standard sand (Jumunjin, South Korea) with a particle size of 0.718 ± 0.123 mm.…”

Section: Experimental Procedure: Soil Column Experimentsmentioning

confidence: 99%

Effect of Polyacrylamide Application on Water and Nutrient Movements in Soils

Kim¹,

Song²,

Kim³

et al. 2015

JACEN

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An understanding of nutrient movement in soil is important for developing management strategies to minimize nutrient leaching and surface movement, thus improving nutrient uptake by plants, maintaining a sustainable soil system, and even protecting groundwater quality. Polyacrylamide (PAM) is known as one of soil conditioner that functions to stabilize soil structure, increase infiltration, and reduce surface runoff. This study assesses the effects of PAM on the vertical movement of soil-water and major/minor nutrients (NO3-N, NH 3 -N, T-N, PO 4 -P, T-P, K, Ca, Mg, and Fe) in soils. Saturated hydraulic conductivity (Ksat) increases with increasing PAM concentrations up to 10 mg•L −1 for sand and 20 mg•L −1 for a mixture of sand and clay. Decreases in the loss of soluble nutrients, particularly NH 3 -N, PO 4 -P and T-P, are observed as PAM concentrations increase. In contrast, PAM concentration has no effect on nitrate and minor nutrient levels. These results indicate that the application of PAM may be a viable method for protecting water bodies from excessive nutrients and improving nutrient availability for plants. KeywordsPolyacrylamide, Water and Nutrient Movement, Breakthrough Curve, NaCl-Tracer, Soil Column, Major & Minot Nutrients M. Kim et al. 77

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“…There has been limited research into the significance of organic carbon components of the soil solution or of the properties of cell surfaces in microbial transport through the vadose zone after an application of organic wastes. Increases in pH were correlated with enhanced attachment of Bacillus spores to silt [ Kim et al , 2009] but decreased the adhesion of Pseudomonas putida to clay minerals or goethite [ Jiang et al , 2007]. Theoretically, electrostatic adhesion of bacterial cells to charged soil minerals depends on the pH of the suspending solution and the isoelectric points of the two interacting surfaces [ Rong et al , 2010].…”

Section: Introductionmentioning

confidence: 99%

Analysis of matrix effects critical to microbial transport in organic waste‐affected soils across laboratory and field scales

Unc¹,

Goss²,

Cook³

et al. 2012

Water Resources Research

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Organic waste applications to soil (manure, various wastewaters, and biosolids) are among the most significant sources of bacterial contamination in surface and groundwater. Transport of bacteria through the vadose zone depends on flow path geometry and stability and is mitigated by interaction between soil, soil solution, air‐water interfaces, and characteristics of microbial surfaces. After initial entry, the transport through soil depends on continued entrainment of bacteria and resuspension of those retained in the porous structure. We evaluated the retention of bacteria‐sized artificial microspheres, varying in diameter and surface charge and applied in different suspending solutions, by a range of sieved soils contained in minicolumns, the transport of hydrophobic bacteria‐sized microspheres through undisturbed soil columns as affected by waste type under simulated rainfall, and the field‐scale transport of Enterococcus spp. to an unconfined sandy aquifer after the application of liquid manure. Microsphere retention reflected microsphere properties. The soil type and suspending solution affected retention of hydrophilic but not hydrophobic particles. Retention was not necessarily facilitated by manure‐microsphere‐soil interactions but by manure‐soil interactions. Undisturbed column studies confirmed the governing role of waste type on vadose‐zone microsphere transport. Filtration theory applied as an integrated analysis of transport across length scales showed that effective collision efficiency depended on the distance of travel. It followed a power law behavior with the power coefficient varying from ∼0.4 over short distances to >0.9 over 1 m (i.e., very little filtration for a finite fraction of biocolloids), consistent with reduced influence of soil solution and biocolloid properties at longer travel distances.

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Factors that Influence the Transport of Bacillus cereus Spores through Sand

Cited by 11 publications

References 21 publications

The Water Cycle, a Potential Source of the Bacterial PathogenBacillus cereus

The Water Cycle, a Potential Source of the Bacterial PathogenBacillus cereus

Effect of Polyacrylamide Application on Water and Nutrient Movements in Soils

Analysis of matrix effects critical to microbial transport in organic waste‐affected soils across laboratory and field scales

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