Thermal regeneration of spent commercial granular activated carbon was done sequentially after batch adsorption studies to check the adsorptive capacities of the carbon after four (4) circles of regeneration. Characterization of the adsorbents was carried out instrumentally using FTIR, SEM, and PXRD. Characterization parameters such as burn off 25.06% (CGAC) and 6.498% for (RGAC), bulk density 0.58 g/cm3 for (CGAC) and 0.68 g/cm3 for (RGAC), Moisture contents 0.074 and pH 7.0. Attrition 36.24% (CGAC) and 88.92 % (RGAC), Conductivity 1422 µs/cm (CGAC) and 13.85 µs/cm (RGAC). Stock solution of 1000 ppm was prepared; the experimental solution was prepared by using dilution formula to calculate the exact amount of the stock needed to dilute with distilled water to obtain 10,20,30,40, and 50 ppm working standards. 20cm3 of each working standards of Congo red solution were interacted with 1.0 g of the commercial granular activated carbon in a separate glass flask capped with foil. The maximum adsorption capacity after four circles of thermal regeneration, is approximately 81% overall. Batch adsorption study was carried out to study the effect of experimental variables. (pH, Initial concentration, contact time, adsorbent dosage and temperature). The equilibrium study for the sorption of Congo red was investigated using Langmuir, Freundlich, DubininRadushkevich and Temkin isotherm models. The linearity of the Langmuir isotherm models (R2 value of 0.9909 for CGAC, 0.9869 for RGAC), Freundlich isotherm model R2 was CGAC (0.9295), RGAC (0.8794), Temkin isotherm model (R2 CGAC (0.7837), RGAC (0.8076), and Dubinin-Radushkevich isotherm model RGAC (0.7829), CGAC (0.7322) were obtained from their various plots. Langmuir seems to have the best fit having its R2 values very close to 1 follow by Freundlich isotherm model. The efficiency in removal of Congo red using the regenerated adsorbent and commercial activated carbon at 95% confidence interval shows that there is no statistically significant difference. This implied that regeneration of adsorbents after use is of economic advantage to curb cost in solving the problem of textile effluents decolorization.