<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">D. Wu</style></author><author><style face="normal" font="default" size="100%">Tong, M.</style></author><author><style face="normal" font="default" size="100%">Kim, H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of Perfluorooctanoic Acid on the Transport and Deposition Behaviors of Bacteria in Quartz Sand</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science and Technology</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Environ. Sci. Technol.</style></alt-title><short-title><style face="normal" font="default" size="100%">Environ. Sci. Technol.Environ. Sci. Technol.</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Acid base interaction</style></keyword><keyword><style  face="normal" font="default" size="100%">article</style></keyword><keyword><style  face="normal" font="default" size="100%">Bacillus subtilis</style></keyword><keyword><style  face="normal" font="default" size="100%">Bacteria</style></keyword><keyword><style  face="normal" font="default" size="100%">bacterial cell</style></keyword><keyword><style  face="normal" font="default" size="100%">Bacteriology</style></keyword><keyword><style  face="normal" font="default" size="100%">bacterium</style></keyword><keyword><style  face="normal" font="default" size="100%">Break through curve</style></keyword><keyword><style  face="normal" font="default" size="100%">cell transport</style></keyword><keyword><style  face="normal" font="default" size="100%">cells</style></keyword><keyword><style  face="normal" font="default" size="100%">cells by body anatomy</style></keyword><keyword><style  face="normal" font="default" size="100%">Chemical heterogeneities</style></keyword><keyword><style  face="normal" font="default" size="100%">Cytology</style></keyword><keyword><style  face="normal" font="default" size="100%">Deposition</style></keyword><keyword><style  face="normal" font="default" size="100%">Deposition behavior</style></keyword><keyword><style  face="normal" font="default" size="100%">Enhanced transports</style></keyword><keyword><style  face="normal" font="default" size="100%">Escherichia coli</style></keyword><keyword><style  face="normal" font="default" size="100%">Extra-cellular polymeric substances</style></keyword><keyword><style  face="normal" font="default" size="100%">Gram positive bacterium</style></keyword><keyword><style  face="normal" font="default" size="100%">heterogeneity</style></keyword><keyword><style  face="normal" font="default" size="100%">Ionic strength</style></keyword><keyword><style  face="normal" font="default" size="100%">Nano-scale roughness</style></keyword><keyword><style  face="normal" font="default" size="100%">Negibacteria</style></keyword><keyword><style  face="normal" font="default" size="100%">nonhuman</style></keyword><keyword><style  face="normal" font="default" size="100%">Perfluorooctanoic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">pH</style></keyword><keyword><style  face="normal" font="default" size="100%">polymer</style></keyword><keyword><style  face="normal" font="default" size="100%">Porous materials</style></keyword><keyword><style  face="normal" font="default" size="100%">Posibacteria</style></keyword><keyword><style  face="normal" font="default" size="100%">Quartz</style></keyword><keyword><style  face="normal" font="default" size="100%">roughness</style></keyword><keyword><style  face="normal" font="default" size="100%">Sand</style></keyword><keyword><style  face="normal" font="default" size="100%">silicon dioxide</style></keyword><keyword><style  face="normal" font="default" size="100%">solution</style></keyword><keyword><style  face="normal" font="default" size="100%">transport process</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2016</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://doi.org/10.1021/acs.est.5b05496</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">5</style></number><publisher><style face="normal" font="default" size="100%">American Chemical Society</style></publisher><volume><style face="normal" font="default" size="100%">50</style></volume><pages><style face="normal" font="default" size="100%">2381-2388</style></pages><isbn><style face="normal" font="default" size="100%">0013936X (ISSN)</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The significance of perfluorooctanoic acid (PFOA) on the transport and deposition behaviors of bacteria (Gram-negative Escherichia coli and Gram-positive Bacillus subtilis) in quartz sand is examined in both NaCl and CaCl2 solutions at pH 5.6 by comparing both breakthrough curves and retained profiles with PFOA in solutions versus those without PFOA. All test conditions are found to be highly unfavorable for cell deposition regardless of the presence of PFOA; however, 7%-46% cell deposition is observed depending on the conditions. The cell deposition may be attributed to micro- or nanoscale roughness and/or to chemical heterogeneity of the sand surface. The results show that, under all examined conditions, PFOA in suspensions increases cell transport and decreases cell deposition in porous media regardless of cell type, presence or absence of extracellular polymeric substances, ionic strength, and ion valence. We find that the additional repulsion between bacteria and quartz sand caused by both acid-base interaction and steric repulsion as well as the competition for deposition sites on quartz sand surfaces by PFOA are responsible for the enhanced transport and decreased deposition of bacteria with PFOA in solutions. © 2016 American Chemical Society.</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><auth-address><style face="normal" font="default" size="100%">Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, ChinaDepartment of Mineral Resources and Energy Engineering, Chonbuk National University, Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 561-756, South Korea</style></auth-address><remote-database-name><style face="normal" font="default" size="100%">Scopus</style></remote-database-name></record></records></xml>