Acid-treated pomegranate peel; An efficient biosorbent for the excision of hexavalent chromium from wastewater

• DOI: 10.1016/j.heliyon.2023.e15698
• Publication Date: 2023-04-24T16:12:55Z
• Authors: Rajan Rai; Ram Lochan Aryal; Hari Paudyal; Surendra Kumar Ga...; Kedar Nath Ghimire; Megh Raj Pokhrel; Bhoj Raj Poudel
• Keywords: Hexavalent Chromium; Biosorption; Langmuir adsorption model

We studied the sequestration of hexavalent chromium Cr(VI) from an aqueous solution using chemically modified pomegranate peel (CPP) as efficient bio-adsorbent. The synthesized material was characterized by X-ray diffraction spectroscopy (XRD), Fourier-transform infrared (FTIR), energy dispersive (EDS), and scanning electron microscopy (SEM). impacts parameters like pH, concentration, contact time, adsorbent dosage were investigated. Experimental results isotherm studies adsorption kinetics found agreeing to Langmuir model pseudo-second-order kinetics, respectively. CPP showed appreciable remediation capacity with a maximal loading 82.99 mg/g at pH 2.0, which obtained in 180 min room temperature. Thermodynamic revealed biosorption process spontaneous, feasible, thermodynamically favorable. spent eventually regenerated reused, safe disposal ensured. study that can be effectively employed affordable sorbent for excision water.