Study on adsorption of methylene blue dye on low cost adsorbent derived from wild weed lantana camara impregnated with phosphoric acid and potassium hydroxide

Adsorption is a surface phenomenon that is used to remove both organic and inorganic pollutants. Chemical indicators, dyes, and biological dyes use methylene blue a lot. The printing and dyeing processes generate a significant amount of organic dye wastewater. The development of an adsorbent for the removal of methylene blue dye was the focus of the study, which sought to determine how various activators affected this process. H3PO4 and KOH activations were used to conduct the optimal batch adsorption studies of MB dye on the adsorbent. The effectiveness of MB removal was examined in relation to a number of process parameters, including the initial MB dye concentration, adsorbent dose, and contact time. AC-KOH performed good result than AC-PA in terms of MB dye removal when the adsorbent dose was 1.25 g/L. According to the contact time studies, methylene blue removal was found to be 100% at 70 minutes. When using methylene blue, the percentage of MB that is removed begins to decrease in proportion to the MB concentration. The data that was obtained during the experiment can be used with either model. Nevertheless, Langmuir Isotherm is more precise. The pseudo first order model fits well in the kinetic study.