Abstract

AbstractThis paper deals with the adsorption of 2-picoline from aqueous solution to tea waste activated carbon (TWAC). The characteristics and effects of the adsorbent on different parameters of adsorption have been examined. Initial pH (pH0), adsorbent dose (m), contact time (t), initial concentration (C0), and temperature (T) are the adsorption parameters tested using a batch adsorption sample. In the present analysis, the adsorbent used comprises approximately 48% fixed carbon and a porous structure revealed from morphological research. Maximum 2-picoline removal was found to be 83% and 56% TWAC for lower (50 mg/L) and higher (500 mg/L) 2-picoline concentrations, respectively, with a dose of 15 g/L 303 K, pH0 of 6.54, and a contact time of 60 min. Adsorption was found to be very quick, and in the initial 5 min of contact time, about 55% of 2-picoline removal was observed. The adsorption equilibrium analysis was also carried out using the isothermal equations of Langmuir and Freundlich. Compared to Langmuir adsorption isotherm, the adsorption data showed reflecting Freundlich isotherm as well. 16.47 mg/g was found to be the highest monolayer adsorption power. Strong potential for removing contaminants from wastewater has been identified by the activated carbon generated from tea waste.KeywordsTea wasteAdsorptionAdsorbentLangmuir and Freundlich2-picolineAdsorbent dose

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