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Thermal Activation of Digested Sewage Sludges for Carbon Dioxide Removal from Biogas

1
Energy Department (DENERG), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10100 Turin, Italy
2
Energy Center, Politecnico di Torino, Via Paolo Borsellino 38/16, 10138 Turin, Italy
3
Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10100 Turin, Italy
*
Author to whom correspondence should be addressed.
Fuels 2020, 1(1), 30-46; https://doi.org/10.3390/fuels1010004
Received: 21 September 2020 / Revised: 18 October 2020 / Accepted: 20 October 2020 / Published: 22 October 2020
Anaerobically digested sewage sludges were used as feedstock in the production of activated carbons through physical activation. These char samples were experimentally tested as adsorbents for the removal of CO2 from a simulated biogas mixture. The CO2 concentration level allowed in biomethane was fixed from the European Standards EN 16723-1 and EN 16723-2. The char yield and the subsequent adsorption capacity values were studied, considering the operating parameters of the process. A physical activation process was considered with the following parameters: the temperature, the dwell time, the activating agent, the heating rate, the flow rate, and the method. Among the adsorption tests, the activating temperature and the agent employed affected the CO2 removal. The maximum adsorption capacity was achieved with nitrogen as an activating agent at 600 °C, with 2 h of dwell time (102.5 mg/g). View Full-Text
Keywords: pyrolysis; circular economy; wastewater; sewage sludges; biomethane; CO2 removal pyrolysis; circular economy; wastewater; sewage sludges; biomethane; CO2 removal
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MDPI and ACS Style

Tinnirello, M.; Papurello, D.; Santarelli, M.; Fiorilli, S. Thermal Activation of Digested Sewage Sludges for Carbon Dioxide Removal from Biogas. Fuels 2020, 1, 30-46. https://doi.org/10.3390/fuels1010004

AMA Style

Tinnirello M, Papurello D, Santarelli M, Fiorilli S. Thermal Activation of Digested Sewage Sludges for Carbon Dioxide Removal from Biogas. Fuels. 2020; 1(1):30-46. https://doi.org/10.3390/fuels1010004

Chicago/Turabian Style

Tinnirello, Mirko; Papurello, Davide; Santarelli, Massimo; Fiorilli, Sonia. 2020. "Thermal Activation of Digested Sewage Sludges for Carbon Dioxide Removal from Biogas" Fuels 1, no. 1: 30-46. https://doi.org/10.3390/fuels1010004

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