Green deal, circular economy, and PNRR: from biogas to biomethane. Regulatory compliance and major accidents prevention.


  • Gianandrea Gino Studio Ingegneria per il Rischio Tecnologico -Milano
  • Gianluca Scurto Studio Ingegneria per il Rischio Tecnologico -Milano



Green deal – Climate change


A biogas plant is mainly an anaerobic digester that treats farm or biodegradable wastes including sewage sludge and food waste. Biogas and its upgraded form, biomethane, are a source of renewable gas and a model of sustainable development. 

Production plants that reuse agro-industrial wastes reduce emissions in agriculture and are a virtuous example of the circular economy since the byproduct is digestate, an organic fertilizer destined for reuse.

The environmental performance of the organic residues reuse can achieve below zero CO2 emissions levels and contribute to atmospheric release reduction of one of the most significant greenhouse gasses, methane.

In the framework of the EU Green deal and among the objectives of the Italian Recovery and Resilience the commitment is to produce 4 billion cubic meters of biomethane by 2026, rising to a target of 6 Gm3 in the next four years.

The trend of raw materials and energy costs accompanied by the related geopolitical tensions further enhances this resource value.

A prospect that encourages the growth in number and size of production plants and the storage of hazardous substances held that may become subject to the Italian Legislative Decree 105/2015 for the major-accident hazards involving dangerous substances control (2012/18/EU Directive - Seveso III).

The related regulatory requirements are in addition to the explosion and conventional fire prevention national regulations, mandatory also for the settlements with lower storage capacity.

A review of the major accidents recorded by the European Community database eMars confirms that for this type of plant the safety conditions must be evaluated and improved applying the typical risk analysis tools and a safety management system with a view on the prevention of major accidents.


Agenzia Coesione “Italia Domani: il Piano Nazionale di Ripresa e Resilienza.”

D.lgs. 26 giugno 2015 n°105 Attuazione della direttiva 2012/18/UE relativa al controllo del pericolo di incidenti rilevanti connessi con sostanze pericolose

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