Adsorptive Removal of Tetracycline Hydrochloride from Aqueous Medium Over Powdered Carbon Nanotubes and its Beads: Kinetic and Thermodynamic Study
DOI:
https://doi.org/10.70749/ijbr.v4i2.2849Keywords:
Tetracycline Hydrochloride (TCH), Carbon nanotubes (CNT), Ionic Liquid (IL) and Diethylammonium Trifluoroacetate (DETFA), Hydrochloric Acid (HCl)Abstract
In Pakistan, industrial effluents were introduced into water which contaminants water bodies, hence research has focused on adsorptive removal of the antibiotic Tetracycline Hydrochloride (TCH) which is toxic. Adsorption is a fast, simple, and affordable process in contrast to more intricate methods. To accomplish this goal, adsorbent such as carbon nanotubes (CNT) and its chemically produced beads with ionic liquid (IL) Diethylammonium trifluoroacetate (DETFA) were chosen. The selected adsorbents were then characterized by means of SEM, EDS, FT-IR, and pH (PZC). SEM images of powder CNT show rough, cracked, and small ridges like morphology with pebble-like structures on the surface, for CNT DETFA (IL) beads it shows rough cracked morphology. The FTIR spectra confirms the fruitful adsorption process through peak alteration. The PZC of CNT was found to be 6.23. The adsorption data shows that the equilibrium was established within 160 min. Pseudo 2nd order kinetics was found best fits to the adsorption kinetics data. Using the Van’t Hoff equation, it was determined that Entropy of activation (ΔSo) was positive which shows an increase in randomness at the solid-liquid interface during the adsorption. The negative values of ΔG˚ specify the spontaneous nature of the adsorption. Δ????° positive value shows endothermic nature of adsorption process. The isotherm data fitted well to Langmuir model for the adsorption data. The maximum uptake capacity is shown by Powder CNT and followed by CNT DETFA (IL) Beads i.e. (98.87 and 86.37 mgg-1). The adsorbent after use was regenerated using hydrochloric acid (HCL) up to 4 cycles. According to current research, these adsorbents can effectively extract dangerous antibiotics (TCH) from contaminated rivers.
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