Abstract
The menace of the disposal of agricultural wastes and water contamination is on the increase. Thus, the need to find a way to recycle these agriculture wastes and make water safe for use. In this study, raw Peanut shell (PSH) and Carbonized Peanut Shell (CPSH) were used as biobased adsorbents in the decontamination of methylene blue (MB) dye from solution. The prepared materials were characterized by SEM, FTIR, XRD, and BET surface area analysis. The batch adsorption method was selected in the MB removal process to maintain adsorbent dosage and dye concentration. The surface area was increased from 1.03 to 34.96 m2/g. also the pore diameter reduced form macropore (93 nm) to micropores (2.39 nm) after carbonization. The CPSH has an adsorption capacity of 104 mgg-1 and about 90% removal of the 50 mg/L MB with 40 mins at a pH of 6.5. The pseudo-second-order kinetic model best suits the adsorption performance of the CPSH adsorbent. Also, the dye adsorption procedure onto the PSH corresponds to the Langmuir isotherm while the CPSH best fitted with the Freundlich isotherm. This study presents PSH as an alternative resource for the preparation of a cheap and efficient adsorbent from agricultural waste for the removal of laden dye.
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