Municipal waste management in Sicily: practices and challenges

Area of Science:

• Environmental Science
• Waste Management Engineering
• Energy Recovery

Background:

• Landfills are the predominant waste disposal method in the EU and industrialized nations, posing environmental challenges.
• Current waste management in Sicily, a densely populated region, faces critical issues due to landfill limitations.
• Existing recycling and recovery efforts are insufficient to address the scale of municipal solid waste.

Purpose of the Study:

• To detail a new Waste Management Plan for Sicily focusing on sustainable solutions.
• To evaluate the potential of waste-to-energy (WTE) plants as an alternative to landfilling.
• To present the operational framework for new WTE facilities in Sicily.

Main Methods:

• Analysis of Sicily's municipal solid waste (MSW) composition and management strategies.
• Description of a new Waste Management Plan incorporating WTE technology.
• Outline of the steam cycle process for electricity generation in four proposed WTE plants.

Main Results:

• The proposed plan integrates material recovery, with residues forming feedstock for WTE plants.
• Recovered material is estimated to constitute 20-40% of the collected MSW by weight.
• Four WTE plants are planned to generate electricity, addressing Sicily's waste crisis.

Conclusions:

• Waste-to-energy plants present a sustainable and environmentally sound alternative to landfilling for municipal solid waste.
• Sicily's new Waste Management Plan leverages WTE technology to convert waste into energy, mitigating environmental impact.
• The integration of material recovery enhances the efficiency and viability of WTE operations.