Composition and Characteristics of Excavated Materials from a Legacy Waste Dumpsite: Potential of Landfill Biomining

Landfill biomining (LFBM) has been proposed as a viable method for the reclamation of legacy waste dumpsites well subsequent recovery valuable resources and land value spaces. Despite these advantages, potential LFBM faces significant challenge due to composition, characteristics end-use excavated materials. This paper assesses composition obtained during operation four heaps at Boragaon dumpsite in North-East India determines physicochemical crucial material energy from key reclaimed fractions. The compositional analysis revealed that proportion combustible non-combustible fractions decreases youngest heap HP4 oldest HP1 variations consumption habits local community inadequate recycling recyclable However, fine fraction (FF) shows an increasing trend HP1, suggesting enhanced biodegradation easily degradable over years. proximate content suggest refuse-derived fuel (RDF) preparation is most suitable valorization option since surface defilements are too high good quality recovery. elevated amount organic matter leachable heavy metals indicate unrestricted reuse FF earth-fill can cause long-term settlements groundwater contamination, respectively. Even though every different characteristics, findings this case study assist developing new strategies waste.