2026-09-26T12:50:22Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/89239 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Limited Restriction Lifted for Item 91442 on 2018-03-03T10:15:30Z. application/pdf http://hdl.handle.net/2142/89239 en Copyright 2015 Conghui Huang drinking water biofilm simulation Nguyen, Thanh H. Huang, Conghui 2016-03-02T21:07:12Z 2016-03-02T21:07:12Z 2018-03-03T10:15:30Z 2015-12-11 2015-12 Biofilms, commonly found in drinking water distribution system (DWDS), play an important role in pathogens transportation and persistent and raise concern on drinking water safety. They can harbor opportunistic pathogen from disinfectants added to control pathogen. Since bacterial adhesion is the prerequisite for further propagation, understanding the mechanisms of bacterial adhesion on biofilm surface is important to prevent pathogen adhesion and reduce the risk to exposure in DWDS. In this study, bacterial size particles were used to model bacterial adhesion on simulated drinking water biofilms surfaces. Simulations on effects of Brownian motion and drag force on adhesion mechanism were conducted using COMSOL Multiphysics. The role of surface topography and roughness on particle deposition were determined through simulations on biofilm surfaces and artificial surfaces maintaining roughness or topography similar to biofilms. The simulation results showed that surface topography instead of roughness and associated hydrodynamic condition can affect particle adhesion tendency. Spatial analysis through semivariogram showed that the deposition location was not dominated by surface structure. Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2017-12-01 The student, Conghui Huang, accepted the attached license on 2015-12-10 at 16:26. The student, Conghui Huang, submitted this Thesis for approval on 2015-12-10 at 16:36. This Thesis was approved for publication on 2015-12-11 at 13:03. DSpace SAF Submission Ingestion Package generated from Vireo submission #9003 on 2016-03-02 at 14:14:26 Made available in DSpace on 2016-03-02T21:07:12Z (GMT). No. of bitstreams: 2 HUANG-THESIS-2015.pdf: 9290069 bytes, checksum: 56e4ca1efb4f7e99c79dfc29360b036d (MD5) LICENSE.txt: 4210 bytes, checksum: cc18887ce0a351ca0d22e4c0447bbb4e (MD5) Previous issue date: 2015-12-11 Embargo set by: Seth Robbins for item 91442 Lift date: 2018-03-02T21:07:27Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system particle deposition Simulation on particle adhesion on simulated and modified drinking water biofilms text text Civil & Environmental Engineering Civil & Environmental Engineering University of Illinois at Urbana-Champaign Thesis M.S.