One of the major contaminants of water bodies is dye pollutants that come from textile,
paper, and leather industries. In this study, Casuarina equisetifolia needle (CEN) is used to
remove methyl violet 2B (MV) from aqueous solutions. Batch experiments were done to
investigate the contact time, effect of pH, initial dye concentrations, and temperature.
Langmuir and Freundlich isotherm models were used to describe the interaction between
the adsorbate and adsorbent. The sorption mechanism was described using Lagergren 1st …