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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in atti di convegno anno 2017

Contributo in atti di convegno

Tipo: Contributo in atti di convegno

Titolo: MULTI-STAGE SEMI-DRY ANAEROBIC DIGESTION OF OFMSW AND CATTLE MANURE IMPROVED BY NATURAL ZEOLITES

Anno di pubblicazione: 2017

Autori: Francesco Petracchini, Flavia Liotta, Valerio Paolini, Mattia Perilli, Davide Cerioni, Francesco Gallucci, Monica Carnevale, Alessandro Bencini

Affiliazioni autori: National Research Council of Italy, Institute of Atmospheric Pollution Research. Via Salaria km29.300, 00015 Monterotondo, Italy 2 Social Energy srl. Via della Tenuta del Cavaliere, 1, 00012 Guidonia, Italy 3 Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Unità di Ricerca per l'Ingegneria Agraria, Via della Pascolare 16, 00015 Monterotondo, Italy

Autori CNR:

  • VALERIO PAOLINI
  • MATTIA PERILLI
  • FRANCESCO PETRACCHINI

Lingua: inglese

Abstract: This paper reports the improvement obtained by natural zeolites for anaerobic digestion of the organic fraction of municipal solid waste and cattle manure. A full scale multi-stage reactor was used for the tests. A first dry stage was used for hydrolysis and acidogenesis, equipped with a leachate accumulation and recirculation unit. Leachate is then continuously directed to a second wet stage, in which methanogenesis and biogas production occur. The obtained wastewater presents a low organic content and might be recirculated in the leachate collection tank: however, ammonia level must be preliminary reduced. For this purpose, natural zeolites were tested as a valid alternative to currently used approaches. The obtained water has a low nitrogen content and could be continuously be recirculated without leading to inhibition phenomena. When saturated, natural zeolites are added to the compost obtained from the solid residue of the first dry stage, improving its slow release of water and ammonia into the soil. The plant was monitored for 80 days: no ammonia inhibition was observed, the concentration of this compound being always below 320 mg/L.

Lingua abstract: inglese

Referee: Ś: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • agricultural biogas plants
  • anaerobic digestion
  • municipal solid waste (MSW)
  • ammonia
  • wastewater treatment.

Congresso nome: 25th European Conference and Exhibition

Congresso data: 12/06/2017-15/06/2017

Congresso rilevanza: Internazionale

Congresso relazione: Contributo

Strutture CNR:

 
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