Knowledge Agora

Title	Gaseous Emissions from the Composting Process: Controlling Parameters and Strategies of Mitigation
ID_Doc	8081
Authors	Sayara, T; Sanchez, A
Title	Gaseous Emissions from the Composting Process: Controlling Parameters and Strategies of Mitigation
Year	2021
Published	Processes, 9, 10
Abstract	Organic waste generation, collection, and management have become a crucial problem in modern and developing societies. Among the technologies proposed in a circular economy and sustainability framework, composting has reached a strong relevance in terms of clean technology that permits reintroducing organic matter to the systems. However, composting has also negative environmental impacts, some of them of social concern. This is the case of composting atmospheric emissions, especially in the case of greenhouse gases (GHG) and certain families of volatile organic compounds (VOC). They should be taken into account in any environmental assessment of composting as organic waste management technology. This review presents the relationship between composting operation and composting gaseous emissions, in addition to typical emission values for the main organic wastes that are being composted. Some novel mitigation technologies to reduce gaseous emissions from composting are also presented (use of biochar), although it is evident that a unique solution does not exist, given the variability of exhaust gases from composting.
PDF	https://www.mdpi.com/2227-9717/9/10/1844/pdf?version=1634553175

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