The capacity of meso-dimercaptosuccinic acid functionalized magnetite (DMSA-magnetite) and magnetic nanocomposite (DMSA-magnetite as disperse phase and calcium alginate as matrix) to remove oxyanions is presented. For arsenic and chromium sorption a maximum uptake capacity was observed using a pH of 6.5 and 4.5, respectively. These results have been obtained using deionized water spiked with arsenic or chromium. Effect of DMSA-magnetite nanoparticles and magnetic nanocomposite on the removal of arsenic and chromium from ground water was investigated at pH 6.5 and 4.5, respectively. Water samples were taken from Mayag�ez, Puerto Rico and spiked with different concentrations of arsenic and chromium. Samples were treated with 1g of sorbent per liter of water. The samples were shaken and aliquots were taken at regular time intervals (1, 6, 12, 24, 36, 48, 60, and 72 hours). The samples were diluted and concentrations of arsenic and chromium were determined using EPA method 200.8.

Removal of arsenic and chromium in groundwater using a magnetite based nanocomposite

245th National Meeting (2013)

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