In this study, modified activated carbon from agro by-product (peanut shell) has been successfullyrnproducedrnthroughrnchemicalrnactivationrnprocessrnusingrnsodiumrnhydroxidern(NaOH)rnasrnanrnactivatingrnrnagent and also the effect of activation agent and carbonization temperatures on adsorptionrnefficiency, surface characteristics and yield were studied. To produce modified activated carbon,rnsamples were heated to the final carbonization temperatures 400, 500 and 600rnX | ashenaf i B, 2018G.Crn rnornC respectively underrnarncontinuousrnpurernnitrogenrnflowrn(99.6%)rnandrnatrnarnheatingrnraternofrn10rnornC/min with an activationrntime150min. The physicochemical properties of the raw peanut shell and sodium hydroxidernmodified peanut shell based activated carbon were characterized by BET, FT-IR, XRD, pHrnPZCrnrnand proximate analysis. The adsorption efficiency tests were performed in the batch adsorptionrnsystem at different initial concentrations of GY 28 dye 30-150 ppm, contact time 10-90 min, andrnsolution pH 2-10 with 100ml volume of solution at constant solution temperature 25+5Â°C andrn150rpm with 0.5gm of base modified activated carbon @500rnornC. This modified adsorbent (BM5)rnremoves 83.3% and 25 mg/gm of the GY 28 dye from aqueous solution at optimal pH of 10 andrn60 min with fixed amount of adsorbent, 0.5gm. The equilibrium data was analyzed by Freundlichrnand Langmuir isotherm models. Finally, the rate of the adsorption process was investigated usingrnPseudo first and Pseudo second order kinetic models. Pseudo second-order kinetic model wasrnfound to be well fitted to the data obtained. Based on the Golden Yellow 28 dye removal efficiencyrnrntest, the activated carbon produce from raw peanut shell by thermo-chemical activationrnmethod can be used as one of the alternative adsorbent in dye wastewater treatment.