Kinetic Study on the SO2 Adsorption using CuO/γ-Al2O3 Adsorbent

David Bahrin  -  Department of Chemical Engineering, Institut Teknologi Bandung, Jln. Ganesa No. 10 Bandung 40132,, Indonesia
Subagjo Subagjo  -  Department of Chemical Engineering, Institut Teknologi Bandung, Jln. Ganesa No. 10, Bandung 40132,, Indonesia
*Herri Susanto  -  Department of Chemical Engineering, Institut Teknologi Bandung, Jln. Ganesa No. 10, Bandung 40132,, Indonesia
Received: 10 Nov 2015; Revised: 29 Feb 2016; Accepted: 29 Feb 2016; Published: 1 Apr 2016; Available online: 10 Mar 2016.
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Abstract

Adsorbent CuO/g-Al2O3 for adsorption of SO2 were prepared by impregnating Cu(NO3)2.3H2O solution. Five types of adsorbent were obtained 5Cu (intended Cu concentration of 5%, actual of 4.92%), 8Cu (7.68%), 15Cu(14.13%), 22Cu (20.80%) and 27Cu (25.80%). For activity test, model gas containing SO2 with a concentration of about 0.755 mol/m3 were passed through the bed of 1 gram adsorbent at a flow rate in the range of 1.4-1.8 mL/s. Adsorption of SO2 were carried out at a constant temperature of 300, 350, 400 or 450 °C. Increasing sulfur loadings (gram of sulfur per gram of adsorbent) were observed with increasing adsorption temperatures, but not with increasing Cu content in the adsorbent. Among those types, adsorbent of 8Cu was considered as the best with respect to the sulfur loading (3 g of sulfur per 100 g of adsorbent). Adsorbent 5Cu had actually a better sulfur loading, but it was suspected being contributed also by adsorption of SO2 on Al2O3. The shrinking core model was used in the kinetic study of adsorption using 8Cu and with additional assumption of a spherical particle. Compared to film diffusion and pore diffusion controlling step models, the reaction rate limitation was the best to fit the experimental data. The reaction rate constant for this model at temperatures of 300, 350, 400 and 450 °C were 0.022, 0.038, 0.042, and 0.059 kg.m.mol-1.min-1, respectively. The activation energy was 21.25 kJ.mol-1 and the frequency factor was 2.02 min-1. Copyright © 2016 BCREC GROUP. All rights reserved

Received: 10th November 2015; Revised: 29th February 2016; Accepted: 29th February 2016

How to Cite: Bahrin, D., Subagjo, S., Susanto, H. (2016). Kinetic Study on the SO2 Adsorption using CuO/γ-Al2O3 Adsorbent. Bulletin of Chemical Reaction Engineering & Catalysis, 11 (1): 93-100. (doi:10.9767/bcrec.11.1.425.93-99)

Permalink/DOI: http://dx.doi.org/10.9767/bcrec.11.1.425.93-99

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Keywords: SO2 adsorption; CuO/γ-Al2O3 adsorbent; CuO conversion; shrinking core model

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Article Info
Section: The 2nd International Conference on Chemical and Material Engineering 2015
In 2016: BCREC Volume 11 Issue 1 Year 2016 (SCOPUS and Web of Science Indexed, April 2016)
Statistics: 1539 599
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