Journal
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
Volume 48, Issue 5, Pages 348-354Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10601325.2011.562464
Keywords
Tannins; arsenic; iron oxide nanocomposites; renewable resources; water; nanoparticles
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Funding
- US Department of Energy
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High arsenic concentration in groundwater is found in many countries, including Bangladesh, India, Vietnam, Thailand and United States. In these countries, the arsenic concentrations have reached dangerous levels for human consumption, especially where the main source of drinking water is from groundwater. Many techniques have been developed for arsenic removal, one being the use of iron oxide or magnetite nanoparticles for heavy metal removal. In this study, a novel tannin-based carbon-iron oxide composite has been developed by us for arsenic removal and results show that a concentration of 100 ppb As in water could be brought down to 10 ppb with the maximum capacity of the arsenic removal calculated to be 1.5 mg As/g Fe in the nanocomposite. The characterization of the nanocomposite and the advantages of using this renewable resource-based nanocomposite are also discussed.
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