Abstract
The aim of this article was the fabrication of Al2O3/Pd(NO3)2/zeolite adsorbent through roll-coating technique for CO gas adsorption. Transmission electron microscopy (TEM), field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and energy-dispersive x-ray spectroscopy (EDX) were performed to investigate the morphological, structural, and elemental properties of Al2O3/Pd(NO3)2/zeolite adsorbent. A continuous gas analyzer KIMO KIGAZ 210 was applied for testing CO gas adsorption on as-present adsorbent in an experimental set-up. The calculated amounts of adsorption capacity at equilibrium time was 111.16 mg g-1 according to the previous published article. The Elovich, Avrami, and Fractional power kinetic models were studied for this adsorbent. The equal value of experimental and theoretical adsorption capacity at equilibrium time as well as the unit value of regression coefficient indicate that Avrami kinetic model was a suitable model to describe Co removal through Al2O3/Pd(NO3)2/zeolite adsorbent.
Highlights
The clean and high quality air is essential for human health
Electric swing adsorption (ESA), moisture swing adsorption (MSA), temperature swing adsorption (TSA), and pressure swing adsorption (PSA), or techniques like temperature vacuum-pressure swing adsorption (TVPSA) that can be made by compilation of these above methods [11]
The structure of pure zeolite nanoparticles is more crystalline than pure Al2O3 and Pd(NO3)2 nanoparticles that confirm an appropriate property of zeolite to have a high adsorption capacity due to its porosity
Summary
The clean and high quality air is essential for human health. The main contributors to climate change belong to emission of toxic gases CO, CO2, NOx, Sox [1, 2]. Carbon-based adsorbents such as activated carbons are commercially cheaper than other adsorbents, and have known for toxic gas removal because of its useful properties such as eco-dependence, consistency of thermic and chemic, conductance of heat and electricity, or high resistance [16,17,18,19]. Its disadvantages such as lack of low thermal and mechanical stability rather than other materials should not be ignored [6]. The Elovich, the Avrami, and the Fractional power kinetic models for CO adsorption by zeolite@Pd/ Al2O3 nanoadsorbent were studied and analyzed
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