Specific Surface Area Enhancement of Waste Tire-Based Activated Carbon by Demineralization Technique and Adsorption of Methylene Blue

Table 2

AAS results of four metals Ca, Mg, Zn, and Al.

Metals	Conc. of WTAC (mg/L)	Conc. of (NaOH + H2SO4) DMWTAC (mg/L)	Percent of metal reduced
Ca^2+	81.75	58.90	27.95
Mg^2+	3.785	3.526	6.843
Zn^2+	10.76	6.048	43.79
Al^3+	2.351	1.588	32.45