Synthesis, Characterization, and Application of Nanoadsorbent Derived from Prosopis Cineraria (Khejri)

Bhanupriya Mordhiya, Chetan Selwal

Abstract: The research paper discusses the preparation of plant-based nanoadsorbents through the chemical activation process, using various locally available plants and trees as sources of activated carbon. The study focuses on nanoadsorbents synthesized from the barks of Prosopis cineraria, commonly known as Khejri in the local language. The nanoadsorbent's characterization includes Attenuated total reflectance spectroscopy (ATR), Scanning electron microscopy (SEM), and X-ray diffraction (XRD), surface area analysis for assessing its capability to remove organic pollutants. The experiments were conducted using the batch adsorption technique, examining the pH effect and different adsorbent doses of activated carbon for removing the organic dye methylene blue from wastewater. The results demonstrated that the maximum adsorption of methylene blue occurred at pH 7, reaching adsorption equilibrium within 75 minutes at 100 mg/L MB concentration, with an adsorbent dose of 20 mg/50 mL for each sample. The removal efficiency of the MB dye increased with higher pH levels, with pH 7 showing the maximum removal capacity for all samples.

Keywords: Nanoadsorbant, Prosopis cineraria, Methylene blue, Adsorption Isotherms