title: Supercritical water oxidation of a model fecal sludge without the use of a co-fuel.
abstract: A continuous supercritical water oxidation reactor was designed and constructed to investigate the conversion of a feces simulant without the use of a co-fuel. The maximum reactor temperature and waste conversion was determined as a function of stoichiometric excess of oxygen in order to determine factor levels for subsequent investigation. 48% oxygen excess showed the highest temperature with full conversion. Factorial analysis was then used to determine the effects of feed concentration, oxygen excess, inlet temperature, and operating pressure on the increase in the temperature of the reacting fluid as well as a newly defined non-dimensional number, NJa representing heat transfer efficiency. Operating pressure and stoichiometric excess oxygen were found to have the most significant impacts on NJa. Feed concentration had a significant impact on fluid temperature increase showing an average difference of 46.4°C between the factorial levels.
authors.affiliation: Chemical Engineering, University of Missouri, United States.
authors.forename: A
authors.initials: A
authors.lastname: Miller
authors.affiliation: Bioengineering, University of Missouri, United States.
authors.forename: R
authors.initials: R
authors.lastname: Espanani
authors.affiliation: Civil and Environmental Engineering, University of Missouri, United States.
authors.forename: A
authors.initials: A
authors.lastname: Junker
authors.affiliation: Civil and Environmental Engineering, Duke University, United States.
authors.forename: D
authors.initials: D
authors.lastname: Hendry
authors.affiliation: Bioengineering, University of Missouri, United States.
authors.forename: N
authors.initials: N
authors.lastname: Wilkinson
authors.affiliation: Civil and Environmental Engineering, Duke University, United States.
authors.forename: D
authors.initials: D
authors.lastname: Bollinger
authors.affiliation: Civil and Environmental Engineering, Duke University, United States.
authors.forename: J M
authors.initials: JM
authors.lastname: Abelleira-Pereira
authors.affiliation: Civil and Environmental Engineering, Duke University, United States.
authors.forename: M A
authors.initials: MA
authors.lastname: Deshusses
authors.affiliation: Civil and Environmental Engineering, University of Missouri, United States.
authors.forename: E
authors.initials: E
authors.lastname: Inniss
authors.affiliation: Chemical Engineering, University of Missouri, United States; Bioengineering, University of Missouri, United States. Electronic address: jacoby@missouri.edu.
authors.forename: W
authors.initials: W
authors.lastname: Jacoby
mesh_terms: D004867:Equipment Design; D005243:Feces / Q000737:chemistry*; D006358:Hot Temperature; D008962:Models, Theoretical; D010084:Oxidation-Reduction; D010100:Oxygen; D011312:Pressure; D012722:Sewage / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
chemical_list: D012722:Sewage; D014867:Water; D010100:Oxygen
keywords: Continuous; N(Ja); Simulated feces; Supercritical water oxidation