Effect of goethite coating and humic acid on the transport of bacteriophage PRD1 in columns of saturated sand

Foppen, Jan Willem; Okletey, S.; Schijven, Jack

doi:10.1016/j.jconhyd.2006.02.004

Cited by 68 publications

(35 citation statements)

References 47 publications

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“…However, there have been no studies on the influence of NOM on nTiO2 at low concentrations representing groundwater conditions. Similar to nTiO2, Fe oxyhydroxides have PZC values that are within the pH range of natural water, and the ubiquitous presence of patchy Fe oxyhydroxide coating on natural sediment grains could provide positively charged sites that have been shown to strongly attract negatively charged natural colloids and decrease their transport (Joo et al, 2009;Wang et al, 2012bWang et al, , 2013Foppen et al, 2006;Lin et al, 2011). It was also found that surface charge of Fe oxyhydroxides can change from positive to negative due to increase in pH and/or NOM adsorption (Abudalo et al, 2010;Hu et al, 2014).…”

Section: Stability Of Ntio2 and Their Attachment To Sand Collectormentioning

confidence: 99%

Stability of nTiO 2 particles and their attachment to sand: Effects of humic acid at different pH

Cheng

2016

Science of The Total Environment

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Influence of humic acid (HA) on stability and attachment of nTiO2 particles to sand was investigated. Results showed that HA can either promote or hinder nTiO2 stability, depending on pH and HA concentration. HA can either enhance or reduce nTiO2 attachment to Fe oxyhydroxide coating at pH 5, depending on HA concentration.Results further showed that at pH 5, Fe oxyhydroxide coating reduced nTiO2 attachment to sand in the absence of HA but increased nTiO2 attachment in the presence of low concentration of HA. Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was invoked to analyze particle-to-particle and particle-to-sand interactions in order to elucidate the roles of pH, HA, quartz, and Fe coating in controlling nTiO2 stability and attachment. Overall, this study showed that changes in zeta potential of nTiO2 and Fe coating due to pH changes and/or HA adsorption are the key factors that influence stability and attachment of nTiO2.iii ACKNOWLEDGEMENTS

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Section: Stability Of Ntio2 and Their Attachment To Sand Collectormentioning

confidence: 99%

Stability of nTiO 2 particles and their attachment to sand: Effects of humic acid at different pH

Cheng

2016

Science of The Total Environment

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“…Most viral transport studies focus on bacteriophages, with MS2 being the most common (Powelson et al 1991;Dowd et al 1998;Schijven et al 2002;Weaver et al 2013;Chu et al 2003;Zhuang and Jin 2003a, b;Han et al 2006;Zhuang and Jin 2008;Syngouna and Chrysikopoulos 2011;Wong et al 2014). Other frequently used bacteriophages are: phiX174 (Schijven et al 2002;Kenst et al 2008;Zhuang and Jin 2008;Han et al 2006;Chu et al 2003;Zhuang and Jin 2003a, b;Syngouna and Chrysikopoulos 2011), PRD1 (Schijven et al 2002;Abudalo et al 2005;Foppen et al 2006;Sadeghi et al 2013;Davies et al 2006), and T7 (Flynn et al 2004). Bacteriophages were widely employed as surrogates for human viruses, because they share many properties and features such as size, structure, morphology, and composition.…”

Section: Introductionmentioning

confidence: 99%

Transport of Human Adenoviruses in Water Saturated Laboratory Columns

et al. 2015

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Groundwater may be contaminated with infective human enteric viruses from various wastewater discharges, sanitary landfills, septic tanks, agricultural practices, and artificial groundwater recharge. Coliphages have been widely used as surrogates of enteric viruses, because they share many fundamental properties and features. Although a large number of studies focusing on various factors (i.e. pore water solution chemistry, fluid velocity, moisture content, temperature, and grain size) that affect biocolloid (bacteria, viruses) transport have been published over the past two decades, little attention has been given toward human adenoviruses (hAdVs). The main objective of this study was to evaluate the effect of pore water velocity on hAdV transport in water saturated laboratory-scale columns packed with glass beads. The effects of pore water velocity on virus transport and retention in porous media was examined at three pore water velocities (0.39, 0.75, and 1.22 cm/min). The results indicated that all estimated average mass recovery values for hAdV were lower than those of coliphages, which were previously reported in the literature by others for experiments conducted under similar experimental conditions. However, no obvious relationship between hAdV mass recovery and water velocity could be established from the experimental results. The collision efficiencies were quantified using the classical colloid filtration theory. Average collision efficiency, α, values decreased with decreasing flow rate, Q, and pore water velocity, U, but no significant effect of U on α was observed. Furthermore, the surface properties of viruses and glass beads were used to construct classical DLVO potential energy profiles. The results revealed that the experimental conditions of this study were unfavorable to deposition and that no aggregation between virus particles is expected to occur. A thorough understanding of the key processes governing virus transport is pivotal for public health protection.

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“…However, heterogeneously charged granular media present in the natural environment usually carry patches of iron and aluminum oxides on their surfaces [29][30][31][32]. These minerals often acquire a net positive charge in aquatic environments and aquifers [31,[33][34][35] due to high points of zero charges (pH PZC ) [36], and they were found to enhance the retention of colloids and nanoparticles [20,32,33,35,37,38]. However, the colloidal particles employed in the aforementioned studies were negatively charged due to their low IEP values, so that the above prediction (i.e., enhanced colloid retention) could be acknowledged over the pH range of natural environment.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Chen et al [23] very recently found that the presence of humic acid even at concentration as low as 1 mg L −1 can significantly enhance the transport of nTiO 2 in bare quartz sand at pH 5.7 (pH PZC of nTiO 2 was 4.4), whereas the enhancement of nTiO 2 transportability was limited at pH 9.0. The influence of humic acid on transport of colloidal particles in heterogeneous porous media has also gained attentions [33,35,37,41,42], and such studies reported that humic acid could also enhance the transport of colloidal particles in iron oxide-coated sand columns [33,35,37,41,42].…”

Section: Introductionmentioning

confidence: 99%

Transport and retention behaviors of titanium dioxide nanoparticles in iron oxide-coated quartz sand: Effects of pH, ionic strength, and humic acid

Han

Wang

Cai

et al. 2014

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Effect of goethite coating and humic acid on the transport of bacteriophage PRD1 in columns of saturated sand

Cited by 68 publications

References 47 publications

Stability of nTiO 2 particles and their attachment to sand: Effects of humic acid at different pH

Stability of nTiO 2 particles and their attachment to sand: Effects of humic acid at different pH

Transport of Human Adenoviruses in Water Saturated Laboratory Columns

Transport and retention behaviors of titanium dioxide nanoparticles in iron oxide-coated quartz sand: Effects of pH, ionic strength, and humic acid

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