Seasonal Effects On Anaerobic Digestion of the Source Sorted Organic Fraction of Municipal Solid Waste

Abstract

The effects of seasonal temperature change on the quality of easily degradable organic matter in municipal solid waste was monitored and the related influence on the anaerobic digester performance examined. It was verified that increased external temperature caused the transformation of the ethanol contained in the source-sorted organic fraction of municipal solid waste fed to the digester, into acetate. This transformation has been associated with a remarkable effect on the process kinetics of substrate utilization. Thus, the kinetic constant for the first order substrate utilization model in the summer (external temperature greater than 18-20°C) doubled with respect to the winter, although the digester was held at 35±2°C throughout.

Methane Potential of Food Waste and Anaerobic Toxicity of Leachate Produced During Food Waste Decomposition

“…Food waste is a biodegradable component of refuse for which multiple management alternatives exist, including burial in a landfill, anaerobic digestion (Ten Brummeler & Koster 1989;Cecchi et al 1992) and aerobic composting. Diversion of food waste from landfills is likely to have an impact on methane yields that will increase in proportion to the concentration of food waste in municipal refuse.…”

Evaluation of the effect of initial solid matter concentration and season on anaerobic biodegradation of municipal solid wastes

“…Cechi et al [18] studied on the seasonal effect of anaerobic digestion of the source sorted organic fraction of municipal solid waste. They had examined the effect of temperature on the reactor performance and however their study does not include seasonal influence the waste quality.…”

Caracterização da comunidade procarionte presente no tratamento anaeróbio da fração orgânica dos resíduos sólidos urbanos em conjunto com serragem e lodo de esgoto

“…Para a destinação ambientalmente adequada dos resíduos, quando o objetivo é o tratamento, deve-se considerar em primeiro lugar não a escolha da tecnologia, mas sim a implementação de uma coleta seletiva eficiente (CECCHI et al, 1992). Pode-se dizer que uma mistura lenta e descontínua proporciona um maior controle do processo anaeróbio, pois mantém num ritmo lento a ocorrência da hidrólise e da acidogênese.…”