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oai:www.ideals.illinois.edu:2142/26107 2023-07-10 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

virus removal sand filtration Iron oxide amended biosand filters for virus removal Nguyen, Thanh H. Bradley, Ian M. 2011-08-25T22:13:09Z 2011-08-25T22:13:09Z 2011-08-25T22:13:09Z 2011-08 Laboratory studies were performed to determine if the addition of iron oxides throughout biosand filter (BSF) media would increase virus removal due to adsorption. The proposed mechanism is electrostatic adsorption of negatively charged virion particles to positively charged iron oxides formed during the corrosion of zerovalent iron. Initial tests conducted using continuous flow, small-scale glass columns showed high MS2 bacteriophage removal in an iron-amended sand column (5-log10) compared to a sand only column (0.5-log10) over 20 pore volumes. Additionally, two experiments with a column containing iron particles revealed 4 and 5 log10 removal of rotavirus in the presence of 20 mg/L total organic carbon. Full-scale BSFs with iron particles removed >4-log10 MS2 for the duration of the experiment (287 days), while BSF with steel wool removed >4-log10 MS2 for the first 160 days. Plug flow for the BSF was shown to depend on uniformity between the iron oxide material and sand media grains. The results suggest that the duration of effective virus removal by iron-amended biosand filtration depends on source water conditions and the quantity and composition of iron material added. Overall, this study provides evidence that iron-amended BSFs may advance the field of point-of-use technologies and bring relief to millions of people suffering from waterborne diseases. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-07-20T21:02:27Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Thesis.Ian.docx: 547205 bytes, checksum: f0240ee85e9f768aa67ff7893b36f376 (MD5) Bradley_Ian.pdf: 393600 bytes, checksum: ee3480af57893ad4f21b5d3343cb0fd8 (MD5) Made available in DSpace on 2011-08-25T22:13:09Z (GMT). No. of bitstreams: 3 Bradly_Ian.pdf: 373556 bytes, checksum: 9c1cecc258bde26c606643247e936f37 (MD5) license.txt: 4061 bytes, checksum: e7d6f9bb38f80d6460789d23fa70a899 (MD5) Thesis.Ian.docx: 547205 bytes, checksum: f0240ee85e9f768aa67ff7893b36f376 (MD5) http://hdl.handle.net/2142/26107 en Copyright 2011 Ian M. Bradley Drinking water point-of-use technology Civil & Environmental Eng 1251 Environ Engr in Civil Engr 0231 University of Illinois at Urbana-Champaign Thesis M.S. MS:Env Engr Civil Engr -UIUC 10KS0231MS