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Title	Study of H₂S Removal Capability from Simulated Biogas by Using Waste-Derived Adsorbent Materials
ID_Doc	24452
Authors	Zhu, HL; Papurello, D; Gandiglio, M; Lanzini, A; Akpinar, I; Shearing, PR; Manos, G; Brett, DJL; Zhang, YS
Title	Study of H₂S Removal Capability from Simulated Biogas by Using Waste-Derived Adsorbent Materials
Year	2020
Published	Processes, 8, 9
Abstract	Three waste-derived adsorbent materials (wood-derived biochar, sludge-derived activated carbon and activated ash) were pre-activated at the laboratory scale to apply them for the removal of H2S from a biogas stream. The H2S removal capabilities of each material were measured by a mass spectrometer, to detect the H2S concentration after the adsorption in an ambient environment. The activated ash adsorbent has the highest removal capacity at 3.22 mg(H2S)g(-1), while wood-derived biochar has slightly lower H2S removal capability (2.2 mg(H2S)g(-1)). The physicochemical properties of pristine and spent materials were characterized by the thermogravimetric analyzer, elemental analysis, X-ray fluorescence spectroscopy and N-2 adsorption and desorption. Wood-derived biochar is a highly porous material that adsorbs H2S by physical adsorption of the mesoporous structure. Activated ash is a non-porous material which adsorbs H2S by the reaction between the alkaline compositions and H2S. This study shows the great potential to apply waste-derived adsorbent materials to purify a biogas stream by removing H2S.
PDF	https://www.mdpi.com/2227-9717/8/9/1030/pdf

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