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Characterization of solid waste disposed at Columbia Sanitary Landfill in Missouri

Office of Social Economic Data Analysis, University of Missouri, Columbia, MO 65211, USA Tel: +1 (573) 884-9137; fax: +1 (573) 884-4635 zengyh{at}umsystem.edu

Kathleen M. Trauth

Robert L. Peyton

Shankha K. Banerji

Department of Civil & Environmental Engineering, University of Missouri, Columbia, MO, USA

Waste sorts were conducted during each of the four quarters (or seasons) of 1996 at the City of Columbia Sanitary Landfill. A detailed physical sampling protocol was outlined. Weight fractions of 32 waste components were quantified from all geographic areas that contribute to the Columbia Sanitary Landfill using a two-way stratification method, which accounted for variations in geographical regions and seasons. Comparisons of solid waste generated between locations and seasons were conducted at the 80% confidence level. The composition of the entire waste stream was 41% paper, 21% organic, 16% plastic, 6% metal, 3% glass and 13% other waste. Paper was the largest composition and glass was the smallest composition for all geographical regions. The result of this study was also compared with a 1987 Columbia, Missouri study conducted by EIERA (1987), with studies conducted in other states such as Minnesota, Wisconsin, Oregon and with national study conducted by the USEPA (USEPA 530-R-96-001, PB96-152 160. US Environmental Protection Agency, Office of Solid Waste, Washington, DC). The results of studies from other states are different from this study due to different local conditions, different methodologies and a different scope. There was a small (5%) increase in per capita weight from 1987 to 1996. The total per capita weight in the present study was 60% greater than the national per capita weight reported by the USEPA (1996) due to that the USEPA report excluded industrial, construction and certain commercial waste. The total per capita weight agrees with the national per capita weight for municipal waste reported by Tchobanoglous (1993), which included industrial, construction and commercial sources. The geographical and seasonal effects on the waste composition are evaluated and discussed. Statistical analysis indicates that waste characteristics are different among geographical regions and seasons. The potential for waste recovery and reduction is also discussed.

Key Words: Solid waste characterization • sample survey • integrated solid waste management planning • solid waste composition • wmr 633–8

Waste Management & Research, Vol. 23, No. 1, 62-71 (2005)
DOI: 10.1177/0734242X05050995


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