Fouling and Cleaning of Membrane Filtration Systems in the Dairy Industry: Towards Optimization of Micro- and Ultrafiltration Processes
Research output: Book/Report › Ph.D. thesis
Standard
Fouling and Cleaning of Membrane Filtration Systems in the Dairy Industry : Towards Optimization of Micro- and Ultrafiltration Processes. / Berg, Thilo Heinz Alexander.
Department of Food Science, Faculty of Science, University of Copenhagen, 2014.Research output: Book/Report › Ph.D. thesis
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - BOOK
T1 - Fouling and Cleaning of Membrane Filtration Systems in the Dairy Industry
T2 - Towards Optimization of Micro- and Ultrafiltration Processes
AU - Berg, Thilo Heinz Alexander
PY - 2014
Y1 - 2014
N2 - membranes that were industrially used for a longer period of time (“aged membranes”)to study fouling and cleaning phenomena. During this study, reduced cleaning (a onestepCIP instead of a three-step CIP) was investigated, leading to the suggestion thatthe aim of a cleaning procedure should not necessarily be perfect hydraulic cleanlinessin order to restore processing performance. Consequences of reduced cleaning couldhowever be observed in subsequent CIPs; hydraulic cleanliness reached a lower level.Further research is required to assess the practical significance of these consequences.An overview of possible methods to investigate fouling and cleaning of membranes isgiven. Various spectroscopic methods have been screened to assess whether they canbe used for online measurement of membrane fouling and cleaning. Also, methodswith a possible capability of offline characterization of fouling residues wereinvestigated. Both online and offline methods were found unsuitable to follow thewhole process of fouling and cleaning as the concentration of protein residues on themembrane surface sooner or later reaches a level below the limit of detection of therespective methods.The main differences between full scale filtration and small scale simulations havebeen evaluated and are reflected in the conclusions. These insights will prove useful forfuture development of optimized small scale filtration units that could then be used forimproved simulation of full scale fouling and cleaning of membranes in bench scale.The results obtained in this thesis and the given literature overview is expected to helpoptimizing future membrane cleaning in the dairy industry.
AB - membranes that were industrially used for a longer period of time (“aged membranes”)to study fouling and cleaning phenomena. During this study, reduced cleaning (a onestepCIP instead of a three-step CIP) was investigated, leading to the suggestion thatthe aim of a cleaning procedure should not necessarily be perfect hydraulic cleanlinessin order to restore processing performance. Consequences of reduced cleaning couldhowever be observed in subsequent CIPs; hydraulic cleanliness reached a lower level.Further research is required to assess the practical significance of these consequences.An overview of possible methods to investigate fouling and cleaning of membranes isgiven. Various spectroscopic methods have been screened to assess whether they canbe used for online measurement of membrane fouling and cleaning. Also, methodswith a possible capability of offline characterization of fouling residues wereinvestigated. Both online and offline methods were found unsuitable to follow thewhole process of fouling and cleaning as the concentration of protein residues on themembrane surface sooner or later reaches a level below the limit of detection of therespective methods.The main differences between full scale filtration and small scale simulations havebeen evaluated and are reflected in the conclusions. These insights will prove useful forfuture development of optimized small scale filtration units that could then be used forimproved simulation of full scale fouling and cleaning of membranes in bench scale.The results obtained in this thesis and the given literature overview is expected to helpoptimizing future membrane cleaning in the dairy industry.
UR - https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99121921532005763
M3 - Ph.D. thesis
BT - Fouling and Cleaning of Membrane Filtration Systems in the Dairy Industry
PB - Department of Food Science, Faculty of Science, University of Copenhagen
ER -
ID: 122832007