ENVR 11 |
| Cathleen Webb, Chelsea Campbell, Arden D. Davis, Sreedevi Dawadi, David Dixon, and Jenifer Sorensen. |
| Limestone-based material appears to be an effective arsenic removal process that has great potential for source reduction in drinking water. Limestone-based material offers several benefits to the drinking water community: 1) reasonable removal efficiency as compared to material cost, 2) broad geographic and water system applicability, 3) compatibility with other water treatment processes, 4) ease of technical use and 5) low-cost disposal in landfills. Phase I of this project focused on understanding the physical and geochemical processes that govern arsenic retention and transport in ground water. The efficiency of the process under real-world conditions and the long-term stability of the resulting waste product were examined. Phase II research evaluated a variety of doping mechanisms to increase media efficacy and demonstrated the long-term stability of spent media. Additives and material alteration have increased the removal efficiency. Granulation of powdered limestone as a filter media currently is being investigated. |
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Occurrence, Chemistry, Toxicity and Remediation of Arsenic
8:00 AM-11:00 AM, Sunday, 26 March 2006 Georgia World Congress Center -- B218, Oral
Division of Environmental Chemistry |