HEMATITE NANOPARTICLES-EMBEDDED ACTIVATED CARBON FOR ENHANCING REMOVAL OF POLLUTANTS FROM WASTEWATER

Zezhong Xu (), Youpeng Huang () and Chengliang Han
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Zezhong Xu: Analytical and Testing Center, Hefei University, Hefei, Anhui 230601, P. R. China
Youpeng Huang: Analytical and Testing Center, Hefei University, Hefei, Anhui 230601, P. R. China
Chengliang Han: Department of Chemical and Materials Engineering, Hefei University, Hefei, Anhui 230601, P. R. China

Surface Review and Letters (SRL), 2022, vol. 29, issue 12, 1-7

Abstract: All kinds of heavy metal ions and synthetic dyes in water will produce serious environmental problems and damage to the human body. Activated carbon (AC)/hematite (H; α-Fe2O3) nanocomposites (ACH nanocomposites) have been prepared using a hydrothermal method in ferric citric alkaline solution. The microstructure, chemical composition and properties of as-prepared ACH nanocomposites were investigated, respectively. It has been proved that α-Fe2O3 nanoparticles embedded on the surface of AC greatly improved the hydrophilicity of AC. Results further showed that ACH nanocomposites could be used as adsorbents to effectively remove Cr6+ and Cu2+ from wastewater. The sorption process for Cr6+ and Cu2+ ions met the pseudo-second-order equation. The maximum adsorption capacities of Cu2+ and Cr6+ by ACH were about 20 mg/g and 21 mg/g, respectively. In addition, some organic dyes such as methylene blue (MB) and rhodamine B (RhB) could also be degraded completely by ACH composites. Therefore, it is expected that ACH nanocomposites can be regarded as promising adsorbents and low-cost Fenton-like nanocomposites for the removal of pollutants from aqueous solution.

Keywords: Nanocomposites; magnetic properties; adsorption; pollutants (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X2250161X

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