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Characterization of food waste as feedstock for anaerobic digestion
- Source :
-
Bioresource Technology . Mar2007, Vol. 98 Issue 4, p929-935. 7p. - Publication Year :
- 2007
-
Abstract
- Abstract: Food waste collected in the City of San Francisco, California, was characterized for its potential for use as a feedstock for anaerobic digestion processes. The daily and weekly variations of food waste composition over a two-month period were measured. The anaerobic digestibility and biogas and methane yields of the food waste were evaluated using batch anaerobic digestion tests performed at 50°C. The daily average moisture content (MC) and the ratio of volatile solids to total solids (VS/TS) determined from a week-long sampling were 70% and 83%, respectively, while the weekly average MC and VS/TS were 74% and 87%, respectively. The nutrient content analysis showed that the food waste contained well balanced nutrients for anaerobic microorganisms. The methane yield was determined to be 348 and 435mL/gVS, respectively, after 10 and 28 days of digestion. The average methane content of biogas was 73%. The average VS destruction was 81% at the end of the 28-day digestion test. The results of this study indicate that the food waste is a highly desirable substrate for anaerobic digesters with regards to its high biodegradability and methane yield. [Copyright &y& Elsevier]
- Subjects :
- *METHANE
*BIOGAS
*BIOMASS chemicals
*ALKANES
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 98
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 22393029
- Full Text :
- https://doi.org/10.1016/j.biortech.2006.02.039