Development and Characterization of Bio-Sorbent Material to Decontaminate Hazardous Pollutants from Discharge of Dyes

Abstract

The present study aimed to demonstrate the potential use of Raw Pistacia Lentiscus powder (RPL) to remove methylene blue (MB) dye from aqueous solutions through biosorption. The chemical structure and surface morphology of biosorbent were analyzed using FTIR, XRD, TGA and SEM methods.The adsorption capacity for the dye was optimized by studying the effect of different parameters like solution pH, RPL dosage, contact time, initial dye concentration and temperature. The process optimization revealed that 98.77% of MB dye removed with only 20 mg of RPL during 60 min at pH value of 7.1. The Freundlich isotherm exhibited a better fit with the experimental data with linear regression value (R2=0.9897), although the isotherm parameters of the Langmuir isotherm also indicate favorable adsorption.The maximum capacity (qm) of leaves obtained from the Langmuir isotherm model was 79.96 mg.g-1. The study has demonstrated that RPL as an eco-efficient and low-cost biosorbent for removing pollutant from wastewater and at same time to contribute positively to the waste minimization.

Keywords: Pistacia Lentiscus, dyes, Adsorption, MB, wastewater, Langmuir, Freundlich model