Removal of Pyridine from Aqueous Solutions by Adsorption Using Tangerine Peels: Operating and Morphological Studies
DOI:
https://doi.org/10.31272/jeasd.3970Keywords:
Adsorption, Batch unit, Pyridine, Removal, Tangerine peelsAbstract
The current study focuses on the utilization of tangerine peels, a major agricultural waste generated by consuming this fruit, as a low-cost adsorbent for removing pyridine from contaminated aqueous solutions. The adsorption performance was assessed through batch adsorption tests conducted under various operational conditions. The study reported that tangerine peels had a high capacity for the removal of pyridine, the maximum pyridine removal efficiency reached 83.6% under optimized operating conditions, including an adsorbent dosage of 5.8 g, pH 6, agitation speed of 400 rpm, and contact time of 150 min, where efficiency increased as agitation speed, adsorbent dose and contact time were raised, but decreased with greater values for other variables. pH left runs with pyridine removal both increased in the acidic range to pH 6; however, they decreased under neutral and alkaline conditions. Morphological study indicated that the surface area reduced from 16 to 3.25 m²/g after adsorption of tangerine peels. The occupation of active sites and depletion of functional groups on the adsorbent surface were further confirmed with Fourier Transform Infrared Spectroscopy (FTIR) analysis, whereas Field Emission Scanning Electron Microscopy (FESEM) images showed clear surface changes post-adsorption.
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