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INTEGRATION OF RESOURCE RECOVERY INTO CURRENT WASTE MANAGEMENT THROUGH (ENHANCED) LANDFILL MINING
Renewi Belgium SA NV, Belgium; Univ Leoben, Austria.
Rhein Westfal TH Aachen, Germany.
Swiss Fed Inst Technol, Switzerland.
Katholieke Univ Leuven, Belgium.
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2019 (English)In: DETRITUS, ISSN 2611-4127, Vol. 8, p. 141-156Article in journal (Refereed) Published
Abstract [en]

Europe has somewhere between 150,000 and 500,000 landfill sites, with an estimated 90% of them being "non-sanitary" landfills, predating the EU Landfill Directive of 1999/31/EC. These older landfills tend to be filled with municipal solid waste and often lack any environmental protection technology. " Doing nothing", state-of-theart aftercare or remediating them depends largely on technical, societal and economic conditions which vary between countries. Beside " doing nothing and landfill aftercare, there are different scenarios in landfill mining, from re-landfilling the waste into "sanitary landfills" to seizing the opportunity for a combined resource-recovery and remediation strategy. This review article addresses present and future issues and potential opportunities for landfill mining as an embedded strategy in current waste management systems through a multi-disciplinary approach. In particular, three general landfill mining strategies are addressed with varying extents of resource recovery. These are discussed in relation to the main targets of landfill mining: (i) reduction of the landfill volume (technical), (ii) reduction of risks and impacts (environmental) and (iii) increase in resource recovery and overall profitability (economic). Geophysical methods could be used to determine the characteristics of the landfilled waste and subsurface structures without the need of an invasive exploration, which could greatly reduce exploration costs and time, as well as be useful to develop a procedure to either discard or select the most appropriate sites for (E)LFM. Material and energy recovery from land-filled waste can be achieved through mechanical processing coupled with thermochemical valorization technologies and residues upcycling techniques. Gasification could enable the upcycling of residues after thermal treatment into a new range of eco-friendly construction materials based on inorganic polymers and glass-ceramics. The multi-criteria assessment is directly influenced by waste- and technology related factors, which together with site-specific conditions, market and regulatory aspects, influence the environmental, economic and societal impacts of (E)LFM projects.

Place, publisher, year, edition, pages
CISA PUBLISHER , 2019. Vol. 8, p. 141-156
Keywords [en]
Landfill mining strategies; Enhanced landfill mining; Resource recovery; Waste management practices and policies; Economic assessment; Environmental impacts
National Category
Environmental Management
Identifiers
URN: urn:nbn:se:liu:diva-163966DOI: 10.31025/2611-4135/2019.13884ISI: 000504065300012OAI: oai:DiVA.org:liu-163966DiVA, id: diva2:1412324
Note

Funding Agencies|European UnionEuropean Union (EU) [721185]

Available from: 2020-03-05 Created: 2020-03-05 Last updated: 2020-03-30

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