Adsorption of Heavy Metals on Chemically Modified Muscovite

Mohamed Rashed ,A.a Arfien ,F.a El-Dowy

doi:10.21608/aujes.2020.127586

Mohamed Rashed , A.a Arfien + Show 1 more

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https://doi.org/10.21608/aujes.2020.127586

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Abstract

Effective adsorbent was prepared from Egyptian Muscovite by activation with H2O2, HCl and/or H2O2 / HCl. The prepared adsorbents were applied for the removal of cadmium and lead from polluted water. Raw Muscovite powder was activated by different treatments using 30% H2O2, HCl, and/or HCl /H2O2. Optimum adsorption conditions of pH, adsorbent dose, initial metal concentration, stirring time and solution temperature were optimized for the maximum adsorption of Cd and Pb. The results reveal that the Muscovite adsorbent prepared with a mixture of HCl /H2O2 shows the higher adsorption of Cd and Pb than that with HCl or H2O2. The maximum adsorption of Cd and Pb by the developed adsorbent was 97.8% and 98.1%, respectively at 60 min ,25°C, initial metal concentration 50 ppm, adsorbent dose 2g/50 mL solution and pH 6 for lead and pH7 for cadmium. Adsorption isotherms and kinetic models were investigated and ended to that the adsorption of Pb and Cd fitted well Langmuir adsorption isotherm.

Highlights

Water pollution is one of the most serious environmental problems which is caused by a variety of human activities such as industrial, agricultural and domestic.High concentration of heavy metals and other inorganic pollutants contaminate the water
This study aims to prepare an effective adsorbents from Muscovite by chemical activation with H2O2, HCl and/or H2O2 / HCl, and appleing the resulted adsporbents for the removal of Pb and Cd from its solution
SEM micrographs of raw and purified muscovite (Figs.1-2) showed appearance of separated particles that particles are plate-like and the aggregated plates are compact from the edges with the face dimension of most particles being less than500 μm

Summary

Introduction

Water pollution is one of the most serious environmental problems which is caused by a variety of human activities such as industrial, agricultural and domestic. High concentration of heavy metals and other inorganic pollutants contaminate the water. Heavy metals are becoming more prominent due to the diverse routes of its exposure, its toxic implications across time scales and the level of industrial development in recent decades. The presence of heavy metal ions (e.g. Hg, Cu, Cd, Pb, As, and Se) in water, even at very low levels, can cause damage to ecosystem and human life, because they are not biodegradable (Badawy et al, 2010; El-Bayaa et al, 2009). Aswan University Journal of Environmental Studies (AUJES) 1 (2), pp. Online ISSN: 2735-4237, Print: ISSN 2735-4229. https://aujes.journals.ekb.eg/

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