Abstract
In the present study, Eucalyptus camaldulensis bark/maghemite composite (ECMC) was used for potential application as a low-cost adsorbent for the removal of Cr(VI) from aqueous solution. The structural characterization, morphology and elemental analysis of ECMC were performed by Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray (EDX) and X-ray Diffraction (XRD). The effects of various independent parameters, contact time, initial Cr(VI) concentration, temperature, pH, and adsorption were investigated. It was found that the adsorption capacity of ECMC increases with increasing Cr(VI) concentration and temperature. The optimum pH was found to be 2 for the removal of Cr(VI) by ECMC. The adsorption capacity was found to be 70.1 mg/g with 0.1 g ECMC at pH 2 and 30 °C. Additionally, 10 and 50 mg/L Cr(VI) were removed from 100 mL aqueous solution by 0.1 g ECMC with 99 % and 93.46 % removal efficiencies, respectively. Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Jovanovic, Smith, Koble Korringen, Vieth-Sladek and Sips Isotherm Models were applied to the experimental data to understand the adsorption mechanism better. The Freundlich Isotherm Model described the adsorption process better (R2 = 0.991) among the other isotherms studied.
References
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Artikel in diesem Heft
- review
- Application of Microfluidics in Process Intensification
- article
- A Versatile Converter of Liquid Hydrocarbons for the Production of Reducing and Carbonization Atmospheres
- Design of Impeller Blades for Intensification of Gas-Liquid Dispersion Process in a Stirred Tank
- Experimental Study of the Mixing and Segregation Behavior in Binary Particle Fluidized Bed with Wide Size Distributions
- Studies of Dehydrogenation Reaction over Zinc-Alumina Catalyst
- Pressure-Leaching Behavior of Nickel from Ni–Mo Ore in Aqueous Oxygenated Media
- Impact of Chemical Reaction on MHD 3D Flow of a Nanofluid Containing Gyrotactic Microorganism in the Presence of Uniform Heat Source/Sink
- Impact of Dense Internals on Fluid Dynamic Parameters in Bubble Column
- Improvement of Quality and Digestibility of Moringa Oleifera Leaves Feed via Solid-State Fermentation by Aspergillus Niger
- Adsorption of Hexavalent Chromium by Eucalyptus camaldulensis bark/maghemite Nano Composite