With the aim of investigate the adsorption capacity of graphene oxide/polyvinyl alcohol (GO/PVA) polymer (the adsorbent), methylene blue is selected as an object to assess the adsorption capacity. The results showed that, after 93 minutes, the adsorption get the equilibrium state and 86% of methylene blue is adsorbed. Temperature, pH are also studied to find the optimum conditions for the adsorption where by pH 7 has the highest adsorption capacity and in the base environment, the obtained adsorption capacity is very low (<0,15 mg/g).. Repeated this process triple times on the same adsorbent (the adsorbent is treated after using each time), there is still 80% of methylene blue is adsorbed. This make save the money and protect the environment so this material promises to be a suitable alternate for adsorbents.
