title: Settlement behavior of municipal solid waste due to internal and external environmental factors in a lysimeter.
abstract: Long-term settlement magnitude is influenced by changes in external and internal factors that control the microbiological activity in the landfill waste body. To improve the understanding of settlement phenomena, it is instructive to study lysimeters filled with MSW. This paper aims to understand the settlement behavior of MSW by correlating internal and external factors that influence waste biodegradation in a lysimeter. Thus, a lysimeter was built, instrumented and filled with MSW from the city of Campina Grande, the state of Paraíba, Brazil. Physicochemical analysis of the waste (from three levels of depth of the lysimeter) was carried out along with MSW settlement measurements. Statistical tools such as descriptive analysis and principal component analysis (PCA) were also performed. The settlement/compression, coefficient of variation and PCA results indicated the most intense rate of biodegradation in the top layer. The PCA results of intermediate and bottom levels presented fewer physicochemical and meteorological variables correlated with compression data in contrast with the top layer. It is possible to conclude that environmental conditions may influence internal indicators of MSW biodegradation, such as the settlement.
authors.affiliation: a Department of Health , Federal University of Campina Grande , Cuité , Brazil.
authors.forename: Márcio C
authors.initials: MC
authors.lastname: Melo
authors.affiliation: b Department of Civil Engineering , Federal University of Campina Grande , Campina Grande , Brazil.
authors.forename: Rômulo M
authors.initials: RM
authors.lastname: Caribé
authors.affiliation: b Department of Civil Engineering , Federal University of Campina Grande , Campina Grande , Brazil.
authors.forename: Libânia S
authors.initials: LS
authors.lastname: Ribeiro
authors.affiliation: b Department of Civil Engineering , Federal University of Campina Grande , Campina Grande , Brazil.
authors.forename: Raul B A
authors.initials: RB
authors.lastname: Sousa
authors.affiliation: b Department of Civil Engineering , Federal University of Campina Grande , Campina Grande , Brazil.
authors.forename: Veruschka E D
authors.initials: VE
authors.lastname: Monteiro
authors.affiliation: c Department of Sanitary and Environmental Engineering , Paraíba State University , Campina Grande , Brazil.
authors.forename: William
authors.initials: W
authors.lastname: de Paiva
mesh_terms: D001673:Biodegradation, Environmental; D001938:Brazil; D002947:Cities; D011312:Pressure; D062611:Solid Waste; D064091:Waste Disposal Facilities
chemical_list: D062611:Solid Waste
keywords: Biodegradation; landfill; municipal solid waste; physicochemical parameters; principal components analysis; settlement