Macro- and Nanoscale Observations of Adhesive Behavior for Several <i>E. coli </i>Strains (O157:H7 and Environmental Isolates) on Mineral Surfaces

Morrow, Jayne B.; Stratton, Richard G.; Yang, Haw; Smets, Barth F.; Grasso, Domenico

doi:10.1021/es0500815

Cited by 77 publications

(85 citation statements)

References 76 publications

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“…The low sticking efficiency values obtained in this work express the importance of the use of sufficiently long columns in bacterial transport studies, as the possibility of obtaining these values is not possible with short columns. Note that most values measured in laboratory setups reported in the literature range between 0.02 to 0.9 (Foppen and Schijven, 2006), and in some cases values greater than 1 were measured (Lutterodt et al, 2009a,b, Paramanova et al, 2006, Morrow et al, 2005, Shellenberger et al, 2002. These values are 2 to 5 orders of magnitude higher than results obtained in this work.…”

Section: Low Sticking Efficiencies Inter-strain and Intra-strain Hetcontrasting

confidence: 41%

“…The Ag43 adhesin is known to establish autoaggregation of cells through Ag43-Ag43 interactions by a kind of intercellular handshake mechanism (Klemm et al, 2004;Hasman et al, 2000) resulting in the retardation of cell movement (Yang, 2005). In our case, such mechanism might have played a role, but, more importantly, we found that Ag43 also played a crucial role in the initial attachment of bacteria cells to the quartz grain surfaces.…”

Section: Ag43 Expression and Motilitymentioning

confidence: 45%

“…In such case, the single collector contact efficiency might be under estimated, giving rise to attachment efficiencies in excess of unity. Others (Shellenberger and Logan, 2002;Morrow et al, 2005;Paramonova et al, 2006;Yang et al, 2006;Lutterodt et al, 2009a) have also reported on attachment efficiencies above 1. For the remaining three strains (2041, 1514, and 2049), it was difficult to find an explanation for their very high attachment efficiencies of 1.42, 1.61 and 2.10, other than to assume that the bacteria size that was used in calculating the single collector contact efficiency had been wrong, most likely due to the presence of surface structures sticking out of the surface of these strains, thereby actually acting as a bigger colloidal particle than used in the TE correlation equation.…”

Section: Discussionmentioning

confidence: 93%

“…In addition, in some cases, L α values greater than 1 were found. The latter is not very strange (Shellenberger et al, 2002;Morrow et al 2005;Paramonova et al 2006), due to the presence of cell surface organelles like flagella and pili that extend beyond the cell surface. In such case, the aspect ratio used in the computation of the single-collector contact efficiency might be under estimated.…”

Section: Transport Distance Dependent Sticking Efficiency Reductionmentioning

confidence: 99%

“…We did not consider sticking efficiency values in excess of 1 to be very strange. The presence of cell surface organelles like flagella and pili that extend beyond the cell surface may cause underestimation of the aspect ratio used in the computation of the singlecollector contact efficiency (Shellenberger and Logan, 2002;Morrow et al 2005;Paramonova et al 2006). For many strains (UCFL-131, UCFL-167, UCFL-263, and UCFL-348), in AGW removal of E. coli was complete before the final sampling port was reached.…”

Section: Fig41mentioning

confidence: 99%

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Transport of multiple Escherichia coli strains in saturated porous media

Lutterodt¹

2012

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All rights reserved. No part of this publication or the information contained herein may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, by photocopying, recording or otherwise, without written prior permission from the publishers. Although all care is taken to ensure the integrity and quality of this publication and the information herein, no responsibility is assumed by the publishers nor the author for any damage to the property or persons as a result of operation or use of this publication and/or the information contained hereinPublished by: CRC Press/Balkema PO Box 447, 2300 AK Leiden, the Netherlands e-mail: Pub.NL@taylorandfrancis.com www.crcpress.com -www.taylorandfrancis.co.uk -www.ba.balkema.nl ISBN 978-0-415-62104-5 (Taylor & Francis Group) AcknowledgementsGod makes things beautiful in his own time, this work got to this stage through mental, physical and emotional strength provided by God Almighty. I will like to express my sincere gratitude to all who in various ways contributed to the making of this thesis, and would like to state that many people directly or indirectly contributed to this thesis and those whose names are not mentioned here are the very good friends who would not need their names to be mentioned here to show appreciation to their contribution towards this thesis.I am most grateful to my promoter Professor Stefan Uhlenbrook and supervisor Dr. JanWillem Foppen for their help and guidance. They made this thesis a reality. My profound appreciation to Dr. Wilfred Rölling of the Vrije University, Amsterdam for offering me the opportunity to do part of this work in his laboratory. Special acknowledgements goes to the entire staff of the UNESCO-IHE laboratory, they tirelessly worked behind the scenes to ensure successful running of experiments. I will also like to offer sincere appreciation to Eric Oduroh-Boahene of Geogroup Limited in Kumasi, Ghana, and Michael Nii Armah Aryeetey of the Ghana National Petroluem Corporation for continuously reminding me of the importance of this work and encouraging me. Groundwater contamination by faecal matterAccording to the WHO, an estimated one billion people lack access to an improved water supply and two million deaths per year are attributable to unsafe drinking water, sanitation and hygiene. In addition, many countries still report cholera to the WHO (WHO, 2004). Groundwater may be an important source of water for safe drinking and industrial water supplies, however, many water borne disease outbreaks are known to have been caused by the consumption of groundwater contaminated by pathogenic microorganisms (Goss et al., 1998;Macler and Merkle, 2000;Bhattacharjee et al., 2002;Close et al., 2006;Powell et al., 2003). Pathogenic microorganisms find their way into the sub-surface through the spreading of sewerage sludge on fields, leakage from waste disposal sites and landfills (Taylor et al., 2004), infiltration from cesspits, septic tank infiltration beds, and pit latrines (Foppen ...

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Section: Low Sticking Efficiencies Inter-strain and Intra-strain Hetcontrasting

confidence: 41%

Section: Ag43 Expression and Motilitymentioning

confidence: 45%

Section: Discussionmentioning

confidence: 93%

Section: Transport Distance Dependent Sticking Efficiency Reductionmentioning

confidence: 99%

Section: Fig41mentioning

confidence: 99%

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Transport of multiple Escherichia coli strains in saturated porous media

Lutterodt¹

2012

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Decontamination and Disposal of Contaminated Foods

Doyle¹,

Lee²,

Benson³

et al. 2008

Wiley Handbook of Science and Technology for Homeland Security

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Challenges related to disposal of foods intentionally contaminated with terrorist agents were investigated during a series of three meetings with representatives from government agencies, food companies, and disposal facilities. Technical issues were discussed along with potential economic, political, and social ramifications of different disposal strategies. Modeling was conducted to evaluate the efficacy of managing intentionally contaminated foods using conventional pollution control technologies for solid and liquid waste. The intent of this modeling was to identify factors that may affect risks associated with disposal of solid and liquid foods contaminated with terrorist agents. An extensive literature review was conducted to describe the existing knowledge on disposal of contaminated foods and other terrorist agents.

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