{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Yacob TW"],"funding":["University of Colorado Boulder","Bill and Melinda Gates Foundation"],"pagination":["214-222"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6202436"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["79"],"pubmed_abstract":["Pyrolysis of human feces renders the waste free of pathogens and is a potential method of treating fecal sludge waste collected from non-sewered systems. Slow pyrolysis experiments were conducted on human feces and the char yield and gas evolution quantified at 1-10 °C/min heating rates. Char yield ranged from 35.1 to 35.8% (dry mass basis), while the gas yield ranged from 17.2 to 29.6% (dry mass basis). The pyrolysis gases detected were CO, CO<sub>2</sub>, CH<sub>4</sub>, C<sub>2</sub>H<sub>6</sub>, and H<sub>2</sub>. These non-condensable gases contained a higher heating value (HHV) ranging from 7.2 to 22.8 MJ/Nm<sup>3</sup>. Kinetic analysis was done by a pyrolysis reaction model free method (Isoconversional) as well as a DAEM (Distributed Activated Energy Model) method that assumes many irreversible first order reactions. Both yielded very close values for activation energy ranging from 141 kJ/mol to 409 kJ/mol, with half of the biomass conversion happening at 241.5 ± 2.9 kJ/mol. The findings of the research provide useful technical information that can guide the design of a pyrolysis system to treat fecal waste. Social acceptance and scale-up issues need to be addressed through further research."],"journal":["Waste management (New York, N.Y.)"],"pubmed_title":["Pyrolysis of human feces: Gas yield analysis and kinetic modeling."],"pmcid":["PMC6202436"],"funding_grant_id":["OPP1065047"],"pubmed_authors":["Linden KG","Chip Fisher R","Yacob TW","Weimer AW"],"additional_accession":[]},"is_claimable":false,"name":"Pyrolysis of human feces: Gas yield analysis and kinetic modeling.","description":"Pyrolysis of human feces renders the waste free of pathogens and is a potential method of treating fecal sludge waste collected from non-sewered systems. Slow pyrolysis experiments were conducted on human feces and the char yield and gas evolution quantified at 1-10 °C/min heating rates. Char yield ranged from 35.1 to 35.8% (dry mass basis), while the gas yield ranged from 17.2 to 29.6% (dry mass basis). The pyrolysis gases detected were CO, CO<sub>2</sub>, CH<sub>4</sub>, C<sub>2</sub>H<sub>6</sub>, and H<sub>2</sub>. These non-condensable gases contained a higher heating value (HHV) ranging from 7.2 to 22.8 MJ/Nm<sup>3</sup>. Kinetic analysis was done by a pyrolysis reaction model free method (Isoconversional) as well as a DAEM (Distributed Activated Energy Model) method that assumes many irreversible first order reactions. Both yielded very close values for activation energy ranging from 141 kJ/mol to 409 kJ/mol, with half of the biomass conversion happening at 241.5 ± 2.9 kJ/mol. The findings of the research provide useful technical information that can guide the design of a pyrolysis system to treat fecal waste. Social acceptance and scale-up issues need to be addressed through further research.","dates":{"release":"2018-01-01T00:00:00Z","publication":"2018 Sep","modification":"2026-06-20T04:48:41.567Z","creation":"2026-06-20T03:10:33.659Z"},"accession":"S-EPMC6202436","cross_references":{"pubmed":["30343748"],"doi":["10.1016/j.wasman.2018.07.020"]}}