Browsing by Author "Abukwi, Patience Peruth"

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    Kinetics and adsorption of thymolphthalein dye on hydrothermally activated rice husks
    (Busitema University, 2024) Abukwi, Patience Peruth
    RHC, Rice husk carbon (activated rice husk) has the ability to adsorb the dye stuff from aqueous solution. It may be a useful low-cost adsorbent for the treatment of effluents, discharged from textile industries. In this study, adsorption was used on the removal of thymolphthalein indicator from water using activated rice husks. The influence of contact time, adsorbent dose and initial dye concentration on activated rice husks was evaluated on the sorption capacity. The tests were determined in batch. Analytical measurements were performed by UV-vis spectroscopy. Activation of rice husks was done hydrothermally using an autoclave reactor at a temperature of 180OC. Chemical and morphological characteristics of the activated rice husks were evaluated using thermogravimetric analysis and infrared spectroscopy. Sorption kinetics were conducted and they followed the first pseudo-order kinetic model with R2 value of 0.9743 which was higher than that of the second order kinetic model. Equilibrium data was represented well by the freudlinch model with R2 value of 0.997 than the Langmuir model.