Adsorption Of Rhodamine B Dye And Co 2+ Ions Onto Tamarind Seed Powder

Abstract

The present work describes adsorption of Rhodamine B dye and Co
2+ ions from its aqueous solution onto tamarind
seed powder (TSP). Initial concentration, pH, adsorbent dose and contact time with various temperature have been
studied, in which pH was found to be most effective. The adsorption data were mathematically analyzed using
adsorption isotherm like Freundlich and Langmuir isotherm to study adsorption mechanism of Rhodamine B dye
and Co
2+ ions onto this seed powder. The highest removal efficiency of TSP (1.2 g) is 99.33 % for Rhodamine B
dye at pH 5 within 20 min and 88.43 % removal of Co2+ ions at pH 3 within 20 min. Langmuir isotherm was
found to be most applicable. The reaction was found to be pseudo second order.