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Dynamic Landfill Mining (DLM) aims at the sustainable integration of landfill resources-materials, energy and land-into the circular economy. The establishment of this concept provides a new incentive to advance the use of geophysical methods as economic tools for landfill characterization. Yet, setting the waste composition as a main target adds some challenges to the more conventional geophysical survey practice on landfills tailored to environmental risk assessment. In this contribution, we give an overview of these challenges and recommend a set of consistent solutions that can be adopted to deal with them in an integrated way. The challenges and presented solutions will be illustrated for two specific DLM cases, for which some preliminary geophysical survey results are included in this extended abstract.

(Enhanced) landfill mining (ELFM) is a sustainable waste management strategy which supports the circular economy and reduces the environmental risks related to landfills. To facilitate and encourage stakeholders to launch (E)LFM-projects, RAWFILL has developed (1) an Enhanced Landfill Inventory Framework (ELIF), (2) an innovative landfill characterization methodology combining geophysical imaging and guided sampling (HADESS) and (3) a two-step Decision Support Tool (DST) to allow smart (E)LFM-project planning and prioritization. Based on the Interreg Europe COCOON experiences, the (E)LFM-concept was broadened to Dynamic Landfill Management (DLM), a sustainable and active long-term management of former landfills. DSTs improve decision-making by increasing the efficiency and lowering the uncertainty. The two-step approach offers an efficient and cost-effective solution. The DST 1 (Cedalion) requires limited data and provides guidance to the next step. The result is a ranking score on 4 scenario’s: waste to materials, waste to energy, waste to land interim use. The DST 2 (Orion) provides an overview of relevant tools that can assist the user in the further project development, like estimations about the feasibility of a business case, simulating scenario’s or finding sustainable interim solutions. The latter, interim use, is the novelty in this dual DST and should be seen as a loop in the roadmap. To summarize, the innovative approach of RAWFILL is the broadening of the resource scope at landfills and their comprehensive management, spanning the whole project cycle: from first screening to final redevelopment, including sustainable management and interim uses.

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