Oldoinyo Lengai Volcanic Ash for Removal of Hydrogen Sulfide and Ammonia from Biogas

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dc.contributor.author Kandola, Isack
dc.contributor.author Pogrebnoi, Alexander M.
dc.contributor.author Pogrebnaya, Tatiana P.
dc.date.accessioned 2020-03-09T08:46:48Z
dc.date.available 2020-03-09T08:46:48Z
dc.date.issued 2018-04-13
dc.identifier.uri 10.4236/msce.2018.64010
dc.identifier.uri http://dspace.nm-aist.ac.tz/handle/123456789/616
dc.description This research article published by Scientific research an Academic Publisher, 2018 en_US
dc.description.abstract Oldoinyo Lengai mountain located in Northern Tanzania is the only active natrocarbonatite volcano with unusually alkali-rich natrocarbonatites which are not found elsewhere in the world. Volcanic ash formed earlier during eruptions was collected from different sites along the mountain, and its potency to adsorb hydrogen sulfide (H2S) and ammonia (NH3) from biogas was investigated. The samples were calcinated at different temperatures (550℃ - 850℃) and were characterized by X-ray florescent, scanning electron microscopy and X-ray diffraction techniques. The on-site adsorption experiments were conducted at the biogas digester at ambient conditions. The calcinated ash was packed into the reactor bed, biogas allowed to pass through the adsorbent, and the inlet and outlet concentrations of H2S and NH3 were measured. The height of the site where the adsorbent was taken from, calcination temperature, biogas flowrate and mass of the adsorbent were variable parameters and found to influence greatly on the efficiency of H2S and NH3 removal. The efficiency is increased with calcination temperature raise and mass of adsorbent and decreased with flowrate increase. The samples collected from the top site of the mountain and calcinated at 850℃ exhibited the best sorption performance. en_US
dc.language.iso en en_US
dc.publisher Scientific Research an Academic Publisher en_US
dc.subject Adsorption en_US
dc.subject Calcination en_US
dc.subject Flowrate en_US
dc.subject Volcanic Ash en_US
dc.subject H2S and NH3 Removal en_US
dc.title Oldoinyo Lengai Volcanic Ash for Removal of Hydrogen Sulfide and Ammonia from Biogas en_US
dc.type Article en_US

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