In this work the use of a nephelometric probe for the investigation on crystallization kinetics is reported. The nephelometric signal was proven to be directly proportional to the overall surface of the suspended solid. An experimental investigation on the nucleation of potassium sulphate crystals from aqueous solution was carried out by applying both polythermal and isothermal methods. The nephelometer allowed to properly detect the nucleation point both in polythermal and isothermal runs. The recorded signal during the first period of time after nucleation was related to the growth of the crystal mass by means of a simplified model. The nephelometric signal was proven to well represent the overall crystal surface evolution at the starting of the crystallization operation. Copyright © 2013, AIDIC Servizi S.r.l.
The use of nephelometric measurements in crystallization operations / Parisi, Mariapaola; Chianese, Angelo. - STAMPA. - 32:(2013), pp. 2065-2070. (Intervento presentato al convegno 11th International Conference on Chemical and Process Engineering tenutosi a Milan nel 3-5 June 2013) [10.3303/cet1332345].
The use of nephelometric measurements in crystallization operations
PARISI, Mariapaola;CHIANESE, Angelo
2013
Abstract
In this work the use of a nephelometric probe for the investigation on crystallization kinetics is reported. The nephelometric signal was proven to be directly proportional to the overall surface of the suspended solid. An experimental investigation on the nucleation of potassium sulphate crystals from aqueous solution was carried out by applying both polythermal and isothermal methods. The nephelometer allowed to properly detect the nucleation point both in polythermal and isothermal runs. The recorded signal during the first period of time after nucleation was related to the growth of the crystal mass by means of a simplified model. The nephelometric signal was proven to well represent the overall crystal surface evolution at the starting of the crystallization operation. Copyright © 2013, AIDIC Servizi S.r.l.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
