ASSESSMENT OF LEACHATES CONTAMINATION FROM LANDFILLED EASILY DEGRADABLE WASTE FOR USE AS MULCH

Autor(es)

Takeda, Cintia Minori ; Leme, Mariane Alves de Godoy ; Miguel, Miriam Gonsalves

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL; v. 24, n. 1, p. 244-pg., 2025-01-01.

Resumo

Landfill mining aims to recover landfilled waste for energy, agricultural, material, and environmental purposes. This research evaluates the concentrations of metals and anions from wastes landfilled for 8 and 24 years at Delta A Municipal Sanitary Landfill, located in Campinas city, Southeastern Brazil, using leaching tests to assess its application as mulch in natural form. Landfilled Municipal Solid Wastes were excavated and the recovered cardboard, paper, wood, organic matter, and pruning were classified as landfilled easily degradable (LED) waste. After preparing a representative and homogenized sample of this group, two kinds of leaching tests were conducted to obtain their water and acid extracts. Water extract presented an alkaline pH 8.7, whereas the acid extraction solution had a slight pH increase from 4.9 to 5.6 after contact with LED groups. High Cl-and SO4-2 concentrations for LED in the water extract indicate potential contamination of the surrounding surface water and groundwater, consequently increasing subsoil salinity. Mn, Mo, and Hg concentrations in the water and acid extracts surpassed the quality standard value for irrigation purposes. Thus, LED wastes were considered a source of environmental contaminants. (AU)

• Processo FAPESP: 20/03040-7 - Avaliação do potencial uso na agricultura e geração de energia da fração facilmente biodegradável do resíduo sólido urbano minerado do aterro municipal de Campinas/SP
• Beneficiário: Cintia Minori Takeda
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 19/01559-8 - Mineração de aterros sanitários: caracterização de resíduos sólidos urbanos aterrados visando ao seu potencial de reutilização nas áreas geotécnica, energética e ambiental
• Beneficiário: Miriam Gonçalves Miguel
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular