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Title	Thermal Activation of Digested Sewage Sludges for Carbon Dioxide Removal from Biogas
ID_Doc	24376
Authors	Tinnirello, M; Papurello, D; Santarelli, M; Fiorilli, S
Title	Thermal Activation of Digested Sewage Sludges for Carbon Dioxide Removal from Biogas
Year	2020
Published	Fuels, 1, 1
Abstract	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 degrees C, with 2 h of dwell time (102.5 mg/g).
PDF	https://www.mdpi.com/2673-3994/1/1/4/pdf?version=1603428065

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