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 mgH2S g−1, while wood-derived biochar has slightly lower H2S removal capability (2.2 mgH2S g−1). The physicochemical properties of pristine and spent materials were characterized by the thermogravimetric analyzer, elemental analysis, X-ray fluorescence spectroscopy and N2 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.
Study of H2S Removal Capability from Simulated Biogas by Using Waste-Derived Adsorbent Materials / Lun Zhu, Hua; Papurello, Davide; Gandiglio, Marta; Lanzini, Andrea; Akpinar, Isil; Shearing, Paul R.; Manos, George; Brett, Dan J. L.; Shui Zhang, Ye. - In: PROCESSES. - ISSN 2227-9717. - ELETTRONICO. - 8:9(2020), p. 1030. [10.3390/pr8091030]
|Titolo:||Study of H2S Removal Capability from Simulated Biogas by Using Waste-Derived Adsorbent Materials|
|Data di pubblicazione:||2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/pr8091030|
|Appare nelle tipologie:||1.1 Articolo in rivista|