• AWWA ACE61767

AWWA ACE61767

Arsenic Removal by Activated Carbon Preloaded with Organic carboxyl-Iron Complexes

American Water Works Association , 06/17/2005

Publisher: AWWA

File Format: PDF

$75.00$151.25


This slide presentation discusses the theory that organic acids will complex with Fe(III), so they both get sorbed onto granular activated carbon (GAC); arsenic will adsorb onto the iron in the organic carboxyl-iron complexes; and, rusty iron will magnify the arsenic removal capacity of the organic carboxyl - iron preloaded GAC. Experimental conditions included: bituminous coal based activated carbon (Ultracarb) from U.S. Filter # WESTATE; groundwater from Rutland, Massachusetts contained arsenic concentration ranges from 45-55 ppb; and, arsenic analysis is conducted via ICP-MS method. Specific topics covered include: organic carboxyl-iron complexes for pre-loading GAC; RSSCT of Citric acid-Fe preloaded GAC; RSSCT's with CA-Fe preloaded GAC; digestion of the arsenic adsorbent; arsenic distribution of CA-Fe-pH6 column; arsenic distribution of CA-Fe-pH6 column; conclusions and future research.

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