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University of Illinois at Urbana-Champaign
Effects of Background Ions on Polyethersulfone (Pes) Membrane Fouling by Natural Organic Matter (Nom)
Abstract
dc:description"Hence, NOM aggregation was experimentally evaluated by dynamic light scattering measurements with SRNOM. These tests showed that calcium caused formation of supramolecular NOM clusters. Large-scale MD simulations with multiple NOM molecules were then performed to probe possible formation of supramolecular NOM structures or aggregates. The MD simulations revealed two different mechanisms of NOM aggregation. Calcium ions connect NOM molecules by co-complexation, forming linearly-shaped NOM aggregates. On the other hand, simulation results with magnesium and sodium are more consistent with a ""salting-out"", wherein the ions may promote more compact and spherically-shaped NOM clusters."
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Civl and Environmental Engineering
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Ahn, Won-Young
- Contributors dc:contributor
-
- Clark, Mark M.
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (MiAaPQ)AAI3314716
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/83369