2026-09-18T20:36:54Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/83304 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Mariñas, Benito J. Mi, Baoxia 2015-09-25T21:04:11Z 2015-09-25T21:04:11Z 10000-01-01 2006 2006 The main objective of this study, therefore, was to understand the mechanism controlling the permeation of a neutral molecule (arsenic (III)) through RO/NF membranes. The permeation of potassium iodide (KI), used as background electrolyte, was also investigated. This study introduced Rutherford backscattering spectrometry (RBS) into the membrane field. Major achievements were made from three perspectives: (1) successful characterization of membrane physico-chemical properties, including elemental composition, thickness and roughness of membrane active layer; (2) characterization of the partitioning behavior of neutral and ionic species at various pH and concentration conditions; (3) differentiation of diffusive permeation from advection with permeation data using a simplified solution-diffusion model. By integrating obtained information on membrane properties, solute-membrane interactions, and rejection performance, a better understanding on the mechanisms controlling the transport of neutral and ionic species through RO/NF membranes was attained. Made available in DSpace on 2015-09-25T21:04:11Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3242939.pdf: 4287897 bytes, checksum: f848ffa074715cc9b1e1d4ba16a40e54 (MD5) Previous issue date: 2006 Embargo set by: Seth Robbins for item 84585 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 173 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. http://hdl.handle.net/2142/83304 (MiAaPQ)AAI3242939 eng Engineering, Environmental Partitioning and Diffusivity of arsenic(III) in the Active Layer of Thin-Film Composite Reverse Osmosis and Nanofiltration Membranes text Civl and Environmental Engineering Civl and Environmental Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.