Next Article in Journal
On the Removal and Desorption of Sulfur Compounds from Model Fuels with Modified Clays
Previous Article in Journal
The Drivers and Barriers of Renewable Energy Applications and Development in Uganda: A Review
Article Menu

Export Article

Open AccessArticle

Biogas Cleaning: Activated Carbon Regeneration for H2S Removal

Department of Energy (DENERG), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
Author to whom correspondence should be addressed.
Clean Technol. 2018, 1(1), 40-57;
Received: 5 March 2018 / Revised: 25 May 2018 / Accepted: 4 June 2018 / Published: 13 June 2018
PDF [3869 KB, uploaded 20 July 2018]


The coupling of fuel cell technology with wastewater treatment plants (WWTPs) is within the sustainable development imperative for the integration of energy production purposes and recovery of materials, even if research is still under development in this field. The anaerobic digestion process can be used for fuel cell feeding, only if trace contaminants are removed continuously. The most harmful and frequent contaminant is H2S. This article shows the results of H2S adsorption on activated carbon fixed-beds (dry process), since it is one of the best solutions from both the complexity and costs perspectives. Inside the wide range of commercial activated carbons, a specific commercial carbon has been used in test campaigns, since it is also used in the Società Metropolitana Acque Torino (SMAT) real plant. Thermal regeneration of spent carbons was exploited, using different conditions of temperature, treatment time and atmosphere, since it is a better cost-effective and environmentally sound option than immediate carbon disposal after adsorption. Regeneration with CO2 showed the best regeneration ratio values. In particular, the best conditions achieved were 300 °C and 75 min of thermal treatment time, with a regeneration ratio of 30%. View Full-Text
Keywords: solid oxide fuel cell (SOFC) energy generation; biogas; siloxane; H2S; carbon; regeneration; CO2 solid oxide fuel cell (SOFC) energy generation; biogas; siloxane; H2S; carbon; regeneration; CO2

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Coppola, G.; Papurello, D. Biogas Cleaning: Activated Carbon Regeneration for H2S Removal. Clean Technol. 2018, 1, 40-57.

Show more citation formats Show less citations formats

Article Metrics

Article Access Statistics



[Return to top]
Clean Technol. EISSN 2571-8797 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top