4-picoline adsorption from aqueous solution by using baggage fly ash (BFA): Parametric, kinetic and thermodynamic aspects

Abstract

Numerous harmful characteristics of wastewater containing pyridine chemical have a significant negative impact on human health. Therefore, it is preferred to take it out of the effluent. The derivatives of the pyridine are 2 & 4- picoline. In this work, an adsorption technique was used to remove 4-picoline from the effluent. Wastewater was treated to remove 4-picoline using the natural adsorbent baggage fly ash (BFA). 4-picoline adsorption rate of 82% was reported at pH, 6.22, BFA adsorbent dosage, 4 g/lit, and contact time, 6 h. The current investigation found that 85.83% of 4-picoline could be removed at its maximum with BFA at temperature, 333 K. Investigations were also done into how the starting concentration and temperature affected the elimination of 4-picoline. According to the kinetic analysis, the process uses pseudo-second-order rate kinetics. The thermodynamics study also demonstrated that all temperatures could be predicted using the Freundlich and Langmuir equilibrium adsorption isotherm models. Additionally, the endothermic process was discovered that the BFA-based elimination of 4-picoline.