Sorption of metals to oxic natural sediments
The basic outcome of this dissertation is that (1) the sediment particle is negatively charged over a wide pH range; (2) macroscopically, the sediment particle can be conceptualized as a weak acid entity and sorption of metals to sediment is through the exchange of metal ions with protons or complex...
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| Format: | Dissertation |
| Language: | English |
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ProQuest Dissertations & Theses
01-01-1990
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| Online Access: | Get full text |
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| Summary: | The basic outcome of this dissertation is that (1) the sediment particle is negatively charged over a wide pH range; (2) macroscopically, the sediment particle can be conceptualized as a weak acid entity and sorption of metals to sediment is through the exchange of metal ions with protons or complexation with functional groups; and (3) the multi-site metal binding model which incorporates the effect of pH is developed to describe the partitioning of metals between sediment and water. The analysis of proton and metal binding data for sediment and humic acid shows that humic acid appears the active site of the sediment with respect to proton and metal binding. The effect of some important factors, such as pH, ionic strength, calcium, and temperature, on sorption of metals to natural sediments, also was presented. |
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| ISBN: | 9798206684858 |