Evaluación de metano mediante la codigestión anaerobia de lixiviado de relleno sanitario y lodos de aguas residuales urbanas

Abstract

The objective of this research was to evaluate methane production by anaerobic co-digestion of landfill leachate and urban wastewater sludge. Three anaerobic bioreactors (R1, R2, R3), with 1000 mL capacity, were designed, consisting of 12.5, 25, 50 % v/v treatments of urban sewage sludge for a working volume of 900 mL of mixture. The quantification of methane (CH4) purity in percentage was analyzed through the gas chromatograph electrochemical equipment FULI 9790 II during the 20 days of anaerobic digestion. According to the results obtained, the average CH4 composition ranged between 18.19%, 18.55% and 17.86% for the different treatments applied (R1, R2, R3), indicating that the R2 treatment is the one that obtained the best performance during the whole operation process, maintaining a constant average percentage of 18.55% CH4 during the anaerobic co-digestion time for that sludge/leachate ratio (25%/75% v/v)