Work

Experimental study of growth kinetics in a new freezing-based pretreatment for desalination using Reverse Osmosis

Year: 2026

Type: article

Abstract: This work conducts an experimental study of the operational parameters influencing the freeze-based pretreatment process, to improve the efficiency of reverse osmosis (RO) desalination. The effects of the temperature gradient (7 and 9 °C), subcooling degree (1.25 and 1.75 °C), and initial salt concentration (35 and 50 g/kg) on the ice growth rate were investigated using a dynamic-layer crystalliser. The findings show that an increased initial salt concentration and a higher subcooling degree lowered the growth rate, whereas a higher temperature gradient enhanced it. These results align with the existing knowledge of crystal formation and demonstrate the potential efficacy of freezing as a pretreatment in hybrid desalination systems.

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/e3sconf/202670802004/pdf

Authors: Oumaima Rhandari, Mohamed Ezzokaki, Aurélie Gallfré, Denis Mangin, Driss Khomsi, Naoual Semlali Aouragh Hassani

Institutions: Mohammed V University, Ecole Mohammadia d'Ingénieurs, Lyon 1 Université, Centre National de la Recherche Scientifique, Laboratoire d'Automatique, de Génie des Procédés et de Génie Pharmaceutique

Language: English

Topic: Freezing and Crystallization Processes

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7160269485

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