This paper aims investigating the freeze-drying process to recover flooded archival materials. Good restauration results can be obtained through this process as water freezing, after soaking, allows stopping all undesired chemical and physical phenomena caused by liquid water, and, then, ice removal through sublimation, at low pressure, allows avoiding any further damage. An extensive experimental investigation was carried out in an industrial-scale freeze-dryer, aiming to prove the effectiveness of the process and to provide guidelines for carrying out the freeze-drying process. A simple mathematical model is proposed to evaluate the effect of some operating conditions on the drying time.
On the use of freeze-drying to recover flooded archival materials / Barresi, Antonello; Fissore, Davide; Pisano, Roberto; Pittino, H.. - ELETTRONICO. - (2017), pp. 1-8. (Intervento presentato al convegno EuroDrying’2017 – 6th European Drying Conference tenutosi a Liège, Belgium nel June 19-21, 2017).
On the use of freeze-drying to recover flooded archival materials
BARRESI, Antonello;FISSORE, DAVIDE;PISANO, ROBERTO;
2017
Abstract
This paper aims investigating the freeze-drying process to recover flooded archival materials. Good restauration results can be obtained through this process as water freezing, after soaking, allows stopping all undesired chemical and physical phenomena caused by liquid water, and, then, ice removal through sublimation, at low pressure, allows avoiding any further damage. An extensive experimental investigation was carried out in an industrial-scale freeze-dryer, aiming to prove the effectiveness of the process and to provide guidelines for carrying out the freeze-drying process. A simple mathematical model is proposed to evaluate the effect of some operating conditions on the drying time.File | Dimensione | Formato | |
---|---|---|---|
EuDrying-2017_Barresi_paper_fulltext.pdf
accesso aperto
Descrizione: full text paper
Tipologia:
2. Post-print / Author's Accepted Manuscript
Licenza:
PUBBLICO - Tutti i diritti riservati
Dimensione
1.11 MB
Formato
Adobe PDF
|
1.11 MB | Adobe PDF | Visualizza/Apri |
EuDrying-2017_abstract_Barresi_FD-book.pdf
accesso aperto
Descrizione: Abstract
Tipologia:
Abstract
Licenza:
PUBBLICO - Tutti i diritti riservati
Dimensione
159.87 kB
Formato
Adobe PDF
|
159.87 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2683383
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo