title: Relationship between the Van Kleeck and mass-balance calculation of volatile solids loss.
abstract: An equation was developed that quantifies the relationship between volatile solids reduction (VSR) calculated by the Van Kleeck and mass-balance equations. Two sets of data were used to illustrate the significance of fixed-solids loss on the agreement between the two methods. The Van Kleeck equation assumes that fixed solids are conserved during the digestion process; however, this assumption is not needed for the mass-balance equation. Therefore, if substantial changes in the fixed-solids concentration occur, the Van Kleeck equation will not be as accurate as the mass-balance equation for computing VSR and will also underestimate VSR.
authors.affiliation: Department of Civil and Environmental Engineering, Marquette University, Milwaukee, WI 53201-1881, USA. michael.switzenbaum@marquette.edu
authors.forename: Michael S
authors.initials: MS
authors.lastname: Switzenbaum
authors.forename: Joseph B
authors.initials: JB
authors.lastname: Farrell
authors.forename: Albert B
authors.initials: AB
authors.lastname: Pincince
mesh_terms: D001673:Biodegradation, Environmental; D008962:Models, Theoretical; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000737:chemistry*; D014835:Volatilization
chemical_list: D012722:Sewage