An investigation of a proposed freezing desalination system integrating sweating effect and a Centrifugal-Based brine rejection technique

•Eliminate additional processes like ice crushing and washing.•Key parameters investigated are sweating period, centrifugation rotational velocities, and centrifugation durations.•Sweating period identified as a significant factor influencing mass reduction and brine rejection.•Salt rejection consistently exceeding 90% across various parameter variations.•Centrifugation process demonstrated low power consumption. Freeze desalination (FD) presents a promising yet underutilized technique for addressing global water scarcity, hindered by challenges such as the necessity for ice crushing and washing. This study introduces an innovative FD system incorporating sweating effects and centrifugal brine rejection, aiming to simplify the process by eliminating these additional steps. We evaluate the impact of key variables including sweating period, centrifugation duration, and rotational velocity on ice quality and process efficiency. Through systematic examination, our findings reveal that the sweating period significantly influences product salinity and salt rejection efficiency, achieving a salinity reduction from 40 ppt to 0.99 ppt with a 95.05 % salt rejection rate. Additionally, the centrifugation method showcased low power consumption, marking a significant advancement towards more sustainable desalination practices. This research not only demonstrates the feasibility of the proposed FD system but also sets the groundwork for future enhancements in the field of desalination technology.