Treatment of leachate organic matter through sunlight driven processes.
Waste Manag
; 94: 18-26, 2019 Jul 01.
Article
em En
| MEDLINE
| ID: mdl-31279392
Leachate organic matter (LOM) from mature, stabilized landfills is recalcitrant in nature resulting from high concentrations of humic substances, such as humic acids and other complex organic matter. This research focused on the behavior and fate of LOM in aquatic sun-lit systems to address the extent and mechanisms of LOM photodegradation by exposing leachate to natural sunlight in central Florida for a period of 90â¯days. Transformation processes were measured using ultraviolet-visible (UV-Vis) spectroscopy, fluorescence excitation-emission matrix spectroscopy, size-exclusion chromatography, and chemical oxygen demand over the test period. Results of the study suggest that photolytic, and in some cases biological, reactions were responsible for the reduction of LOM demonstrated by the transformation of high molecular weight recalcitrant material to lower molecular weight material, loss of fluorescence and color, and reduction of UV254 absorbance.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
12_ODS3_hazardous_contamination
/
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Luz Solar
/
Poluentes Químicos da Água
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Waste Manag
Ano de publicação:
2019
Tipo de documento:
Article