title: Extraction of soluble substances from organic solid municipal waste to increase methane production.
abstract: This work deals with the analysis of the methane production from Mexico City's urban organic wastes after separating soluble from suspended substances. Water was used to extract soluble substances under three different water to waste ratios and after three extraction procedures. Methane production was measured at 35 °C during 21 days using a commercial methane potential testing device. Results indicate that volatile solids extraction increases with dilution rate to a maximum of 40% at 20 °C and to 43% at 93 °C. The extracts methane production increases with the dilution rate as a result of enhanced dissolved solids extraction. The combined (extract and bagasse) methane production reached, in 6 days, 66% of the total methane produced in 21 days. The highest methane production rates were measured during the first six days.
authors.affiliation: Environmental Engineering Department, Institute of Engineering, National University of Mexico (Universidad Nacional Autónoma de México), 04510 Mexico DF, Mexico. Electronic address: rcampuzanoa@iingen.unam.mx.
authors.forename: Rosalinda
authors.initials: R
authors.lastname: Campuzano
authors.affiliation: Environmental Engineering Department, Institute of Engineering, National University of Mexico (Universidad Nacional Autónoma de México), 04510 Mexico DF, Mexico.
authors.forename: Simón
authors.initials: S
authors.lastname: González-Martínez
mesh_terms: D057919:Biological Oxygen Demand Analysis; D002947:Cities; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000096:biosynthesis*; D009930:Organic Chemicals / Q000302:isolation & purification*; D012037:Refuse Disposal / Q000379:methods*; D012995:Solubility; D013997:Time Factors; D014835:Volatilization; D014866:Waste Products / Q000032:analysis*
chemical_list: D009930:Organic Chemicals; D014866:Waste Products; D008697:Methane
keywords: Bagasse; Extractions; Methane production; OFMSW; Organic solid waste