Transport of microorganisms through soil

Abu-Ashour, Jamal; Joy, Douglas M.; Lee, Hung; Whiteley, H. R.; Zelin, S.

doi:10.1007/bf01100406

Cited by 187 publications

(120 citation statements)

References 58 publications

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“…The amount and availability of nutrients and carbon in soil will also affect pathogen survival. Pathogen survival time in the upper soil varies from 4 to 160 d (Abu-Ashour et al, 1994;Sjogren, 1994). Survival of pathogenic bacteria first reflects the organism's ability to respond to nonparasitic and adverse environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Vegetation in Riparian Filterstrips on Coliform Bacteria: II. Survival in Soils

et al. 2000

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Section: Discussionmentioning

confidence: 99%

The Influence of Vegetation in Riparian Filterstrips on Coliform Bacteria: II. Survival in Soils

et al. 2000

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“…However, field experiments have frequently revealed that preferential pathways are a major contributor to the overall transport of microbes because they are typically strongly retained in the soil matrix (Abu-Ashour et al, 1994;Bales et al, 1989;Jiang et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Estimation and upscaling of dual-permeability model parameters for the transport of E. coli D21g in soils with preferential flow

Wang

Bradford

Šimůnek

2014

Journal of Contaminant Hydrology

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Dual-permeability models are increasingly used to quantify the transport of solutes and microorganisms in soils with preferential flow. An ability to accurately determine the model parameters and their variation with preferential pathway characteristics is crucial for predicting the transport of microorganisms in the field. The dual-permeability model with optimized parameters was able to accurately describe the transport of E. coli D21g in columns with artificial macropores of different configurations and lengths at two ionic strength levels (1 and 20 mM NaCl). Correlations between the model parameters and the structural geometry of the preferential flow path were subsequently investigated. Decreasing the macropore length produced a decrease in the apparent saturated hydraulic conductivity of the macropore domain and an increase in the mass transfer between the macropore and matrix domains. The mass transfer coefficient was also found to be dependent on the configuration of the preferential flow pathway. A linear superposition approach was used to estimate field-scale preferential transport behavior for hypothetical fields with different amounts and configurations of macropores. Upscaling procedures were numerically investigated to predict this field-scale transport behavior from column-scale parameters. The upscaling method provided a satisfactory prediction of the field results under the tested scenarios. This information will be useful in assessing the risks of microbial transport due to preferential flow.

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“…These pathogens might threaten public health by migrating into ground water or surface water to transmit diseases [6,[39][40][41][42]. Bacteria from wastewater can be discharged into water columns which are subsequently absorbed to sediments, and when the bottom stream is disturbed, the sediment releases the bacteria back into the water columns presenting long term health hazards [43][44][45]. In Rivers state, wastes generated from various anthropogenic activities are channeled directly into the tributaries of the River through open drainage channels.…”

Section: Resultsmentioning

confidence: 99%

Prevalence of Pathogenic Bacteria in Open Drains and its Public Health Implications for Water Resources in Port Harcourt, Southern Nigeria

Ogbonna¹,

Erheriene²

2017

Int J Waste Resour

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IntroductionWastewater is a potential source of many human pathogenic bacteria which poses a serious health risk to the general public. When wastewater percolate into the soil, the transport of pathogenic bacteria from surface water to ground water increases the vulnerability of ground water [1], which is the source of drinking water in many parts of the world. This contributes significantly to the spread of diseases such as cholera, diarrhoea, dysentery, malaria and typhoid fever [2][3][4][5][6]. The Ntanwogba creek is an open drainage system with beehive of socio-economic activities around it. The anthropogenic activities within the areas covered by this creek may result in pollution of water resources through improper disposal of wastes in such drains [7]. These wastes may occur in solid or liquid forms consisting of organic and inorganic wastes, spent oil or lubricants, pesticides and fertilizers, stormwater, runoffs from flash floods, erosion or water from car garages and cleaning centers. The solid wastes such as bottles, cans, plastics and other household products may result in blockage of drains [8,9]. However, it is a common knowledge that poorly drained storm water forms a stagnant pool that provides breeding sites for disease vectors, causes pollution and stench in such places, thus defacing the aesthetic value of our environment [10-13]. As a result of poor network of drainages, water runs over the ground during rainstorms, picks up faeces and contaminates water resources.Incidences of water-borne diseases in Nigeria urban areas leading to millions of death have been reported. Some of these deaths have been traced to the use of waters grossly polluted by untreated waste [14]. Epidemiological records in the Niger Delta, Nigeria also reveals the prevalence of water-borne diseases such as diarrhea, dysentery, typhoid etc. [15,16] cases of water borne diseases representing 20.24% of all cases in Ughelli, Delta state, Nigeria was traced to pollution of water resources through poor sanitation and improper disposal of wastes. These reported cases are attributed to high water table and high probability of groundwater contamination with faecal wastes coupled with poor waste management techniques and disposal problems in the Southern part of Nigeria [17,18]. Microbes may travel with the plume of percolating water from the open drains and AbstractWastewater and sediment samples from the open drains along the Ntanwogba creek were collected from five (5) different sites and analyzed for the presence of pathogenic bacteria. Microbiological studies involved the isolation and characterization of isolates by assessing the gene/nucleotide structure of the bacterial community through the polymerase chain reaction study. Results of the analysis show that the following bacteria were identified from the samples. The gram-negative bacteria include, Proteus mirabilis M18, Klebsiella pneumoniae strain DSM 30104, Burkolderia multivorans strain AUO, Plesiomonas shigelloides strain 187-907R, Pseudomonas fluorescens strain PF1,...

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Transport of microorganisms through soil

Cited by 187 publications

References 58 publications

The Influence of Vegetation in Riparian Filterstrips on Coliform Bacteria: II. Survival in Soils

The Influence of Vegetation in Riparian Filterstrips on Coliform Bacteria: II. Survival in Soils

Estimation and upscaling of dual-permeability model parameters for the transport of E. coli D21g in soils with preferential flow

Prevalence of Pathogenic Bacteria in Open Drains and its Public Health Implications for Water Resources in Port Harcourt, Southern Nigeria

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