RESUMO

VOCs emitted by two composting static piles of biosolids coming from the "El Salitre" wastewater treatment plant (Bogotá, Colombia) were analysed during the composting process. Each pile in its sampling time was maintained with a different aeration system. The sampling was made using Solid Phase Microextraction (SPME); separation and identifications were made using Gas Chromatography (GC) coupled to Mass Spectrometry (MS). Aliphatic and aromatic hydrocarbons, chlorinated compounds, ketones, mercaptans, alcohols and amines were identified in concentrations greater than the norms stipulated by the EPA for inhalation in humans beings. The emission behavior varied according to the aeration system used.

Assuntos

Eliminação de Resíduos Líquidos/métodos , Álcoois/análise , Álcoois/metabolismo , Aminas/análise , Aminas/metabolismo , Colômbia , Cromatografia Gasosa-Espectrometria de Massas , Hidrocarbonetos/análise , Hidrocarbonetos/metabolismo , Cetonas/análise , Cetonas/metabolismo , Compostos Orgânicos/análise , Compostos de Sulfidrila/análise , Compostos de Sulfidrila/metabolismo , Volatilização