X-ray diffraction studies have confirmed the existence of two basic activated carbon structures; the first consists of small regions of elementary crystallites composed of roughly parallel layers of hexagonally ordered atoms, while the second consists of a disordered, cross linked, spaced lattice of carbon hexagons (Marsden and House, 1993). The dimensions of the elementary carbon are dependent on activation temperatures, but they typically vary from 0.9 to1.2 nm in height, 2.0 to 2.3 nm in width. The nano-crystallite structures are estimated to be approximately three layers high, with widths equivalent to the diameter of the carbon hexagons (McDougall and Hancock, 1980, 1981).