Trancone, Gennaro (2024) Biological leaching: a sustainable solution for construction and demolition waste. [Tesi di dottorato]

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The construction sector is notoriously associated with serious environmental impacts, mainly due to the generation of construction waste. This construction and demolition waste (CDW) includes a wide range of materials, including inert and hazardous waste, often resulting from construction, renovation and demolition activities. This category also includes debris produced by natural disasters such as earthquakes and floods. Despite the relevance of such wastes, ambiguity currently exists in their definition, revealing differences in waste management philosophies between regions. The composition and volume of CDWs are subject to variations based on numerous factors, both internal, such as the age of buildings and the technologies used, and external, such as population growth and regional regulations. This thesis mainly focused on cement waste, particularly those potentially contaminated with asbestos, due to their dangerous effects on human health. The research has highlighted biological bioleaching treatments through the action of volatile fatty acids (VFAs) produced in dark fermentation (DF) processes capable of effectively degrading this class of waste. These treatments have also been further applied to the treatment of cement waste not contaminated by asbestos, showing a promising ecological way for the management of CDW.

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