+44-7360-538437Elaboration and Characterization of MnO2-Nanosheets Nanomaterial: Application for Removal of Pb(II) and Cd(II)
Webinar on 5th International Conference on Biomaterials and Nanomaterials
March 10, 2022 | Webinar
Amina Amarray, S El ghachtoulia, M Dahbib and M Azzia
Université Hassan II de Casablanca, Morocco
Mohammed VI Polytechnic University, Morocco
Posters & Accepted Abstracts : Biomed Res
Abstract:
Heavy metals are discharged into water from various industries. They can be toxic or carcinogenic in nature and can cause severe problems for humans and aquatic ecosystems. Thus, the removal of heavy metals from wastewater is a serious problem. Various treatment technologies employed for the removal of heavy metals include chemical precipitation, ion exchange, chemical oxidation, reduction, reverse osmosis, ultrafiltration and electrodialysis. The adsorption method has proven the most effective because of its simplicity, ease of operation, and high efficiency over a wide range of concentrations. Typical adsorbents for heavy metals include perlite, hydroxyapatites, peat, carbon nanotubes, activated carbon, alumina and clay. However, these adsorbents have several disadvantages, such as low adsorption capacity, low selectivity, and a long time equilibrium. In this study, we investigated the adsorption behavior of Pb(II) and Cd(II) by MnO2 nanosheets (MnO2- NS) in an aqueous medium. The synthesis of (MnO2-NS) is based on the exfoliation of an intermediate material lamellar leading to the formation of the nanosheets- MnO2 material with negative charges on its outer surface, which causes a strong attraction of positively charged pollutants like metal cations. The nanomaterial has been characterized by different spectroscopic techniques (XRD, SEM….etc). The study of interaction in an aqueous medium between the MnO2 nanosheets and the metal cations Pb(II) and Cd(II) showed that the materials are highly reactive towards the metal cations.
Biography:
Amina Amarray is a Ph.D. student in chemistry and valorization at Hassan II University since 2017 at the Materials Environment Interface Laboratory, under the direction of Mrs. S. ELGHACHTOULI and Mr. M. AZZI. She is working on the development and characterization of nanomaterials by chemical and electrochemical routes for the removal of organic and inorganic impurities from water.
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