| Abstrakt: |
This research looks at the potential use of natural biomass of fibers plant with raw leaf release (Tl) and sulphuric acid treated fibers (Tls) as adsorbents for the removal of Pb (II) ions in water. The properties of the materials were evaluated using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), nitrogen adsorption–desorption isotherms and thermogravimetric analysis/differential thermogravimetry (TGA/DTG). investigations were used to describe the fundamental physicochemical characteristics of Tlboth before and after acid treatment. Was the subject of bath adsorption tests Pb (II). The initial concentration of Pb (II) ions, reaction time, adsorbent dosage, and pH of the ions were all optimized. The calculated adsorption capacities of Tland Tlson Pb (II) were 32.64 and 44.65 mg g−1, respectively, according to adsorption isotherm studies. Under ideal biosorption circumstances, which include pH = 5, a biosorbent mass of 0.1 g, and an initial Pb2+ion concentration of 10 ppm, calculations using the response surface methodology revealed a maximum biosorption efficiency of Pb2+of 77.6% for Tland 98.7% for Tls. Desorption research findings demonstrated the potential for promising regenerations, as the percentage removal of Pb (II) from the initial value was sustained at more than 60% even after three adsorption–desorption cycles. Furthermore, the adsorption expenses for Pb (II) removal using Tland Tlswere assumed to be 2.14 and 6.71 USD kg−1, respectively. Based on these findings, Tland Tlstreated substances could be utilized as low-cost, environmentally friendly, and effective adsorbents for the removal of Pb (II) from water. G°, S°, and H° thermodynamic parameters demonstrated that the adsorption process was viable, spontaneous, and exothermic. |
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