CHED 1137 |
| Research has shown that certain humic material can adsorb onto solid surfaces, providing additional sites than may bond trace metals and remove them from solution. In this research the removal of molybdenum from the aqueous phase to the solid phase and the possible influence of organic molecules were investigated. Salicylic acid and protocatechuic acid were chosen as simple models for humic material. Equilibrium experiments were done where both the pH and the amount of aluminum oxide were kept constant, while molybdate concentrations were varied in the presence and absence of salicylic acid. The resulting data were fit with Langmuir curves to quantify the number of surface sites and the saturation point of aluminum oxide, as well as to define the differences in adsorption due to the presence of organic molecules in solution. Preliminary results suggest that the presence of the organic effects molybdate adsorption onto the solid surface. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |