Bio Adsorbent Lemon Peels Charcoal to Remove Fe (III) from Water Sources

Abstract

This study describes the creation of a low-cost activated carbon from lemon peels material extract as a precursor which is made from inexpensive lemon peels through a simple calcination process at 500°C and a green extraction with water. Nitrogen adsorption-desorption, FTIR analyses, and transmission electron microscopy were used to characterize the samples. The surface area of the obtained mesoporous lemon peels-derived activated carbon material was 282 m2/g1, and the pore size was 5.7 nm. For the adsorption of Fe (III) ions, an excellent adsorbent was obtained. Maximum Fe (III) ion adsorption capacity was 117.9 mg/g, and the effect of temperature, and time on its adsorption capacity were also investigated. The kinetic data fit the pseudo-second-order mode well, and the adsorption isotherms were confirmed with the Langmuir model. The thermodynamic results Negative values of G° indicate that the adsorption process was spontaneous, and negative values of entropy S° indicate that the state of the adsorbate at the solid/solution interface became less random during the adsorption process. According to the findings, prepared lemon peels-derived activated carbon has a high potential for removing heavy contaminating metal ions Fe(III) from aqueous solutions as a low-cost alternative to commercial adsorbents