LAGENARIA SICERARIA STEM NANO CARBON ADSORPTIONKINETICS AND THERMODYNAMICS OF MALACHITE GREEN DYEA. Mangayarkarasi, S. Arivoli and K. VeeravelanAbstract Among the most significant industrial pollutants are dyes, notably in the textile industry. Many techniqueshave been put forth to remove colour from wastewater, but adsorption is the most widely accepted since itcan be applied on a broad scale. The Malachite Green dye has been removed from aqueous settings usingthis workâs application of Modified Activated Lagenaria siceraria Stem Nano Carbon (ALSNC). The effectsof pH, contact time, starting concentration, and adsorbent quantity were taken into account. Pseudo-firstorder, pseudo-second order, and intra-particle diffusion kinetic models were among those utilised to examinethe mechanism of the adsorption process. Additionally, equilibrium data was fitted to the Radlich-Petersonisotherm model as well as the Langmuir, Freundlich, and Dubinin-Radushkevich, isotherm models. As aresult of raising initial dye concentration, pH, and contact duration, the Malachite Greenâs ability to bind tosurfaces was improved, according to the results. pH 9 was the ideal level. Malachite Green dye adsorptionhad a qmax of 15.87 mg/g according to the Langmuir model. The Freundlich isotherm model and thepseudo-second order kinetic model obtained the best fitness when taking into account the values of R2(0.999) and 2. This work has shown that ALSNC can be used as a cost-effective and efficient adsorbent forthe removal of Malachite Green from aquatic environments. |