The contribution of the emissions generated during the pre-collection of the organic fraction of municipal solid waste was investigated for an existing collection district in a life cycle perspective. Different source segregation intensities and collection frequencies (day-1) of the organic fraction were analyzed. The amount of organic fraction not segregated at source was assumed to be collected commingled with residual waste. The main findings showed that the lower was the collection frequency, the higher was the impact generated during the pre-collection phase, whereas the fuel consumption for collection vehicles was lower. If no source segregation of organic fraction was performed and for a collection frequency of 7 day-1, fuel consumption was 1.73 L/Mg. On the other hand, for a source segregation intensity of organic fraction of 50% and a collection frequency of 1 day-1, the amount of fuel consumed was 12.6 L/Mg. Correspondingly the amount of greenhouse gas emitted during pre-collection was 50 kgCO2eq/Mg and 7.18 kgCO2eq/Mg, respectively. On the basis of the assumption made the emissions of the organic fraction during the pre-collection activities affected mainly the global warming. Depending on different operating conditions the emissions during pre-collection could represent up to 40% of the whole global warming ones of the entire collection system.
Assessment Of The Emissions For The Collection Of Biodegradable Waste In A Life Cycle Perspective: The Influence Of Source Separation Intensity And Collection Frequency
DI MARIA, Francesco;MICALE, CATERINA
2016
Abstract
The contribution of the emissions generated during the pre-collection of the organic fraction of municipal solid waste was investigated for an existing collection district in a life cycle perspective. Different source segregation intensities and collection frequencies (day-1) of the organic fraction were analyzed. The amount of organic fraction not segregated at source was assumed to be collected commingled with residual waste. The main findings showed that the lower was the collection frequency, the higher was the impact generated during the pre-collection phase, whereas the fuel consumption for collection vehicles was lower. If no source segregation of organic fraction was performed and for a collection frequency of 7 day-1, fuel consumption was 1.73 L/Mg. On the other hand, for a source segregation intensity of organic fraction of 50% and a collection frequency of 1 day-1, the amount of fuel consumed was 12.6 L/Mg. Correspondingly the amount of greenhouse gas emitted during pre-collection was 50 kgCO2eq/Mg and 7.18 kgCO2eq/Mg, respectively. On the basis of the assumption made the emissions of the organic fraction during the pre-collection activities affected mainly the global warming. Depending on different operating conditions the emissions during pre-collection could represent up to 40% of the whole global warming ones of the entire collection system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
