Abstract
The Kinetics of the Biosorption of Methylene Blue onto LagenariaSphaerica as adsorbent was studied and the plant was characterized to check it suitability to be used as adsorbent for the treatment of aqueous waste water. The LagenariaSphaerica used was sliced into small sizes, sun dried for 14 days and later oven dried at 105°C for 2 hours to archive bone dryness, it was ground and sieved to various particle sizes and Batch adsorption process was employed. For the study. The effect of process parameters such as Effect of contact time, adsorbent dose, initial concentration of methylene Blue and particle size were investigated. The highest dye uptake stood at 90.1% after 24 hours using an initial dye concentration of 100 ppm and adsorbent dosage of 0.3 g. The experimental data obtained was fitted into adsorption isotherms such as Langmuir and freundlich isotherm model. It was described using linear regression method. Pseudo-first order, pseudo- second order and intra-particle diffusion kinetic models was used to analyze the Experiment. The data best fitted in intra-particle diffusion model and Freundlich isotherm. Considering the result obtained, it can confidently be said that Lagenariasphaerica can be used as an adsorbent for the removal of dye from aqueous solution.
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