Materials And Carbon Flow In A Waste Refinery Process Using Enzymes

Davide Tonini, M. Woods, Thomas Astrup

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Abstract

Recovery of resources from mixed Municipal Solid Waste (MSW) is a crucial aspect of waste management practices. In this paper the materials and carbon flows of an innovative waste refinery process using enzymes are presented. Through enzymatic treatment the process produces two main streams from the initial mixed MSW: a bioslurry (liquefied paper and organics) and a solid fraction (non-degradable materials). The discussion is based on the performance of the process in separating recyclables and recovery Cbiogenic as well as nutrients from the input MSW. The results of MFA and SFA illustrate that the waste refinery has great potential for resource recovery: about 100% of the Cbiogenic and up to 90% of N and P can potentially be recovered in the bioslurry and returned to land after anaerobic digestion. Recovery of ferrous and non-ferrous material is estimated double compared to recovering the same material from bottom ash after incineration (current scenario). Hard plastic can also be separated and recovered. Potentially, only residual 20% of the initial MSW is to be incinerated after refining and separation of metals and plastic.
Original languageEnglish
Title of host publicationProceedings Sardinia 2011, Thirteenth International Waste Management and Landfill Symposium
Place of PublicationItaly
PublisherCISA, Environmental Sanitary Engineering Centre
Publication date2011
Publication statusPublished - 2011
EventThirteenth International Waste Management and Landfill Symposium - S. Margherita di Pula, Cagliari, Italy, Italy
Duration: 3 Oct 20117 Oct 2011
Conference number: 13

Conference

ConferenceThirteenth International Waste Management and Landfill Symposium
Number13
CountryItaly
CityS. Margherita di Pula, Cagliari, Italy
Period03/10/201107/10/2011

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