Figure 2. SEM of surface modified GACs with 1.5KX magnification; (a) GAC-Fe, (b) GAC-Ca

From

Effect of pH and Treatment Time on the Removal of Arsenic Species from Simulated Groundwater by Using Fe3+ and Ca2+ Impregnated Granular Activated Charcoals

P. Mondal, B. Mohanty, C. B. Majumder

Chemical Engineering and Science. 2013, 1(2), 27-31 doi:10.12691/ces-1-2-3