Adsorption of humic substances on activated carbon: A high-performance size exclusion chromatography study
Conference
·
OSTI ID:126396
- Univ. of Michigan, Ann Arbor, MI (United States); and others
In this research, we study the adsorption of humic substances and polymaleic acid on activated carbon. Isotherms conducted at different initial concentrations demonstrate that humic substances are mixtures of components with different adsorbabilities. Adsorption of ultrafiltration size fractions demonstrates that humic solutions are comprised of different molecular weight components, and small molecular sizes adsorb to a greater extent. High-performance size-exclusion chromatography (HPSEC) analysis of isotherm supernatant solutions demonstrate conclusively that small molecular size components are adsorbed preferentially from an HA mixture -- that adsorptive fractionation occurs on the basis of molecular size.
- OSTI ID:
- 126396
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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