When Physical Chemistry Meets Circular Economy to Solve Environmental Issues: How the ReScA Project Aims at Using Waste Pyrolysis Products to Improve and Rejuvenate Bitumens

نویسندگان

چکیده

Urban waste management is a hard task: more than 30% of the world’s total production Municipal Solid Wastes (MSW) not adequately handled, with landfilling remaining as common practice. Another source wastes road pavement industry: service life about 10–15 years, asphalts become stiff, susceptible to cracks, and therefore no longer adapted for paving, so they wastes. To simultaneously solve these problems, circular economy-based approach proposed by ReScA project, suggesting use pyrolysis treat MSW (or its fractions Refuse Derived Fuels, RDFs), whose residues (oil char) can be used added-value ingredients asphalt cycle. Char prepare better performing durable asphalts, oil regenerate exhaust avoiding their landfilling. The provides different useful pathway in end-of-waste (EoW) cycle urban This proof concept suggested following two observations: (i) char made up carbonaceous particles highly compatible organic nature bitumens, addition reinforce overall bitumen structure, increasing mechanical properties slowing down molecular kinetics aging process; (ii) rich hydrocarbons, it enrich poor fraction maltene phase asphalts. These hypotheses have been proved testing derived from RDFs improvement characteristics representative sample regeneration after aging. physico-chemical study materials involved, aims show how chemical knowledge complex systems, like bituminous materials, help solving environmental issues. We hope that this will considered model method future.

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ژورنال

عنوان ژورنال: Sustainability

سال: 2022

ISSN: ['2071-1050']

DOI: https://doi.org/10.3390/su14105790