In-situ regeneration of activated carbon with electric potential swing desorption (EPSD) for the H 2 S removal from biogas

M. Farooq, M.N. Almustapha, M. Imran, M.A. Saeed, John M. Andresen

Research output: Contribution to journalArticlepeer-review

Abstract

In-situ regeneration of a granular activated carbon was conducted for the first time using electric potential swing desorption (EPSD) with potentials up to 30 V. The EPSD system was compared against a standard non-potential system using a fixed-bed reactor with a bed of 10 g of activated carbon treating a gas mixture with 10,000 ppm H2S. Breakthrough times, adsorption desorption volume, capacities, effect of regeneration and desorption kinetics were investigated. The analysis showed that desorption of H2S using the new EPSD system was 3 times quicker compared with the no potential system. Hence, physical adsorption using EPSD over activated carbon is efficient, safe and environmental friendly and could be used for the in-situ regeneration of granular activated carbon without using a PSA and/or TSA system. Additionally, adsorption and desorption cycles can be obtained with a classical two column system, which could lead towards a more efficient and economic biogas to biomethane process.
Original languageEnglish
Pages (from-to)125-131
JournalBioresource Technology
Volume249
Early online date4 Oct 2017
DOIs
Publication statusPublished - 1 Feb 2018

Bibliographical note

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Fingerprint Dive into the research topics of 'In-situ regeneration of activated carbon with electric potential swing desorption (EPSD) for the H 2 S removal from biogas'. Together they form a unique fingerprint.

Cite this