VALUTAZIONE DEL CICLO DI VITA DEI RIFIUTI DA IMBALLAGGIO NELLA PREPARAZIONE E NEL CONSUMO DEL CAFFÈ

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Mauro Moresi https://orcid.org/0000-0002-4706-0129
Alessio Cimini https://orcid.org/0000-0002-6918-9441

Keywords

Abstract

Le crescenti preoccupazioni sui rifiuti da imballaggio e la spinta alla circolarità, evidenziate dal Regolamento UE sugli Imballaggi e i Rifiuti di Imballaggio (PPWR), rendono essenziale una valutazione approfondita dei prodotti di consumo. Questo studio analizza la produzione e il consumo di caffè, inclusi i loro impatti ambientali, tramite una Valutazione del Ciclo di Vita (LCA) semplificata delle fasi di utilizzo e post-consumo di diversi formati di caffè al fine di quantificare i rifiuti di imballaggio per tazza e gli oneri ambientali. Diversi formati di caffè — dai sacchetti multistrato flessibili alle cialde e capsule di diversi materiali fino alle innovative coffee balls — con i rispettivi sistemi di preparazione (Moka, Espresso, macchine per cialde/capsule, capsule riutilizzabili) sono stati esaminati, valutandone l'impatto ambientale con la metodologia comunitaria dell'Impronta Ambientale di Prodotto (PEF), su un'unità funzionale di 720 kg di caffè torrefatto e macinato. Si è rilevato che i sistemi tradizionali con caffè macinato da sacchetti multistrato (PEF: 613±10 nPt/tazza) hanno un impatto significativamente inferiore rispetto alle opzioni monoporzione. Queste includono le "coffee balls" (PEF: 1675±25 nPt/tazza) e soprattutto i sistemi a capsule/cialde, come le cialde (PEF: 2895±581 nPt/tazza) o le capsule in polipropilene (PEF: 2777±23 nPt/tazza), considerando i punteggi PEF normalizzati e ponderati.


L'analisi dettagliata ha evidenziato rilevanti differenze nella generazione di rifiuti (ad es., circa 12 g/tazza per i sacchetti multistrato contro 22 g/tazza per le cialde), nell'impronta carbonica (8.2 g CO2e/tazza per i sacchetti multistrato contro 41 g CO2e/tazza per le capsule in polipropilene), nel consumo di risorse fossili e nel consumo di acqua per singola tazza. Questi dati evidenziano il carico ambientale sproporzionato delle opzioni monoporzione.


Sebbene i sistemi tradizionali richiedano al consumatore di riempire il portafiltro e di smaltire i fondi, i loro benefici ambientali sono chiaramente quantificabili. Questo studio identifica i principali punti critici ambientali e fornisce raccomandazioni basate su prove concrete per armonizzare il consumo di caffè con le normative UE, promuovendo pratiche più sostenibili nella progettazione dei prodotti e nelle scelte dei consumatori.

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