2 research outputs found
Biosorption of hexavalent chromium using tamarind ( Tamarindus indica ) fruit shell-a comparative study
The adsorption of chromium (VI) ions from aqueous solutions has been
investigated on crude tamarind fruit shell, HCl treated and Oxalic acid
treated shells at room temperatures. The biosorbents are characterized
by FT-IR, EDXRF and porosimetry. The biosorption experiments are
conducted through batch system. The influence of different experimental
parameters such as pH, effect of initial metal ion concentration and
effect of dosage of adsorbent on biosorption are evaluated. The
adsorption followed first order kinetics. The data are fitted well to
Langmuir and Freundlich isotherm models. A comparison is drawn on the
extent of biosorption between untreated and treated forms of the
tamarind shells. Due to their outstanding adsorption capacities,
tamarind shells are excellent sorbents for the removal of chromium
ions