Estudo de compostos orgânicos em lixiviado de aterros sanitários por EFS e CG/EM

Abstract

Recebido em 1/6/00; aceito em 14/12/00 STUDY OF ORGANIC COMPOUNDS IN LANDFILL LEACHATE BY SPE AND GC/MSD.The main purpose of this work was the qualitative study of organic compounds in landfill leachate. The samples were collected from a sanitary landfill located at Gravataí, a southern Brazilian city, that receive both, industrial and domestic refuse. The samples were submitted to solid phase extraction (SPE) with XAD-4 resin as the stationary phase. The instrumental analysis was performed by Gas Chromatography with a Mass Spectrometry Detector (GC/MSD). The compounds achieved in the SPE extracts were tentatively identified by the GC/MS library. It was found several oxygen and nitrogen compounds like carboxylic acids, ketones, amines and amides. Sulfur compounds and phthalate esters are also identified.

Tratamento Do Lixiviado De Aterro De Resíduos Sólidos Urbanos Por Processo Fenton

“…Algumas substâncias presentes no efluente podem ser tóxicas ou bioacumulativas, agredindo alguns grupos de organismos aquáticos e até mesmo o homem. Segundo Nascimento Filho et al [21], cetonas, alcoóis, compostos nitrogenados e ácidos carboxílicos são substâncias normalmente encontradas em lixiviados de aterros sanitários. O autor também afirma que a presença de outros compostos de largo emprego industrial e com reconhecida ação ambiental, indicam que a degradação desse efluente por ação bacteriológica não é eficiente, contribuindo para um aumento do potencial toxicológico do lixiviado produzido.…”

Determination of Organic Contaminants in Landfill Leachates: A Review

“…A combination of centrifugation and/or filtration becomes imperative before SPE [25] to speed up the extraction process as well as the use of filtre aid to increase the filtration surface. Another alternative for the extraction of LL was to adsorb the sample on a XAD-4 resin under stirring for 15 min, then the adsorbent was transferred to a column chromatography and eluted with a mixture of methanol-acetone [45]. A variety of carboxylic acids, ketones, amines and amides were identified by GC-MS by using this extraction procedure.…”

Study of bisphenol A in sanitary landfill soil

“…Due to their use in packaging, clothes, films, paints, adhesives, cosmetics, ink printers and many other products, plasticizers compounds are widespread in all environments. Several plasticizers were detected in mineral, ultra pure and tap waters [1], municipal solid waste compost [2], sewage and wastewater treatment sludge [3], river sediments [4], landfill leachate [5][6][7] and swine slaughterhouse wastewaters [8], among other environmental samples.…”