Abstract
The main intention of the present work is to explore the removal effectiveness of Cr+6 ions from their aqueous solutions by adsorption method using Laplap purpureus stem powder (LPSP) as a biosorbent. The most important purpose of research is to analyze the batch mode of adsorption performance such as influences of pH, the dosage of biosorbent, taction time, concentration of Cr+6 ions solution, and temperature. The data obtained from the experiment results were studied by means of both Langmuir and Freundlich adsorption isotherm models. The pseudo-first-order and pseudosecond- order models have been analyzed to examine the kinetic models of adsorption. The adsorption isotherm models and kinetic study of analysis were divulged that an adsorption method was most favored for the Langmuir isotherm model. This investigation exhibits that the pseudo-second-order model plays an important responsibility in the adsorption mechanism to remove Cr+6 ions. The biosorbent (LPSP) has better adsorption ability and also the removal of competence for Cr+6 ions from its aqueous solution.
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