Recovering metal(loids) and rare earth elements from closed landfill sites without excavation: leachate recirculation opportunities and challenges

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dc.contributor.authorLee, Hyeyeon
dc.contributor.authorCoulon, Frederic
dc.contributor.authorBeriro, D. J.
dc.contributor.authorWagland, Stuart
dc.date.accessioned2022-01-11T15:55:38Z
dc.date.available2022-01-11T15:55:38Z
dc.date.issued2021-12-27
dc.description.abstractMetal (loids) and Rare Earth Elements (REE) (‘metals’) are used in a wide range of products, and therefore, the improvement of expectations for everyday comforts with demand continues to grow. Metal-bearing wastes are a secondary source of raw material that can meet this demand by providing a previously unconsidered low impact supply source. Total annual leachate production is 1,056,716 m3. Therefore, landfill leachate emerges as a significant potential resource as it contains high concentrations of metals. However, realising a profitable return on investment for leachate processing is a challenge due to relatively low recovery rates of approximately 0.02% of total heavy metals in a landfill being leached out in 30 years. Variation within the multi-element value and the effect of other chemicals in these complex mixtures. There is a need to better understand the mechanisms and potential applicability of extraction methods for optimising metals recovery from leachate. This paper addresses this need by providing a systematic review of the critical factors and environmental conditions that influence the behaviour of metals within the landfilled waste. The paper provides a synthesis of how the factors and conditions may affect leachate recirculation efficiency for recovery in the context of a range of opportunities and challenges facing circular economy practitioners. To approach feasibility metal recovery economically from landfill leachate without energy-intensive and environmentally destructive, future research actions need to be initiated in lab-based and later on semi-pilot to pilot studies, which the review can help achieve the challenges.en_UK
dc.identifier.citationLee H, Coulon F, Beriro DJ, Wagland ST. (2022) Recovering metal(loids) and rare earth elements from closed landfill sites without excavation: leachate recirculation opportunities and challenges. Chemosphere, Volume 292, April 2022, Article number 133418en_UK
dc.identifier.issn0045-6535
dc.identifier.urihttps://doi.org/10.1016/j.chemosphere.2021.133418
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17395
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCircular economyen_UK
dc.subjectNon-intrusive investigationen_UK
dc.subjectOrganic compoundsen_UK
dc.subjectMobilityen_UK
dc.subjectMetal recoveryen_UK
dc.titleRecovering metal(loids) and rare earth elements from closed landfill sites without excavation: leachate recirculation opportunities and challengesen_UK
dc.typeArticleen_UK

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