The impact of temperature on flux, protein transmission and energy usage during microfiltration of skim milk using polymeric membranes

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Abstract

Membrane performance during microfiltration (MF) of skim milk carried at 7 °C (cold MF) and 50 °C (hot MF) using 800 kDa spiral wound polymeric membranes was assessed. Permeate flux, protein and mineral partitioning, fouling resistance (Rf) and energy consumption as a function of temperature are reported. MF performance at 50 °C resulted in significantly (p < 0.05) higher flux than at 7 °C, with the energy requirements (in kW h kg−1 protein removed) significantly (p < 0.05) lower than cold MF. Overall Rf was significantly (p < 0.05) higher for the cold MF process, with reversible fouling accounting for 97 and 71% of the Rf in the cold and hot MF processes, respectively. On a dry matter basis, cumulative serum protein permeation was similar at both temperatures at 60.4 and 62.1% for the cold and hot MF processes, respectively, with higher β-casein and calcium permeation observed for the cold MF process.

Original languageEnglish
Article number105729
JournalInternational Dairy Journal
Volume147
DOIs
Publication statusPublished - Dec 2023

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