Biofilm Contamination of Ultrafiltration and Reverse Osmosis Plants

Tang, Xuemei; Flint, Steve; Bennett, R.J.; Brooks, J.; Zain, Siti Norbaizura Md

doi:10.1002/9781118876282.ch8

Cited by 5 publications

(7 citation statements)

References 55 publications

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“…In addition to thermophilic microorganisms, the spores of Gram-positive psychrotolerant microorganisms can also survive pasteurization [21]. During the filtration process, the remaining bacteria can settle and multiply at the membrane surface, where optimal nutritional conditions exist and spores can germinate within the deposits [36]. Biofilm formation on spiral-wound membranes is possible during the filtration of pasteurized milk at processing temperatures below 20 • C, as was shown by Chamberland et al [37].…”

Section: Changes In Ph and Microbial Count As A Function Of The Filtrmentioning

confidence: 99%

Effect of Temperature-Dependent Bacterial Growth during Milk Protein Fractionation by Means of 0.1 µM Microfiltration on the Length of Possible Production Cycle Times

Schiffer

Kulozik

2020

Membranes

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This study determined the maximum possible filtration time per filtration cycle and the cumulated number of operational hours per year as a function of the processing temperature during milk protein fractionation by 0.1 µm microfiltration (MF) of pasteurized skim milk. The main stopping criteria were the microbial count (max. 105 cfu/mL) and the slope of the pH change as a function of filtration time. A membrane system in a feed and bleed configuration with partial recirculation of the retentate was installed, resembling an industrial plants’ operational mode. Filtration temperatures of 10, 14, 16, 20, and 55 °C were investigated to determine the flux, pH, and bacterial count. While the processing time was limited to 420 min at a 55 °C filtration temperature, it could exceed 1440 min at 10 °C. These data can help to minimize the use of cleaning agents or mixing phase losses by reducing the frequency of cleaning cycles, thus maximizing the active production time and reducing the environmental impact.

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Section: Changes In Ph and Microbial Count As A Function Of The Filtrmentioning

confidence: 99%

Effect of Temperature-Dependent Bacterial Growth during Milk Protein Fractionation by Means of 0.1 µM Microfiltration on the Length of Possible Production Cycle Times

Schiffer

Kulozik

2020

Membranes

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“…Dairy fluids were ultrafiltered for 5 h at 10°C, a temperature known to reduce microbial spoilage during filtration (Tang et al, 2015), or at 40°C, a temperature known to be optimal for biofouling development in water systems (Melo and Bott, 1997). The volume concentration factor during UF of dairy fluids never exceeded 1.1 due to the low filtration area compared with the high volume of the feed.…”

Section: Dairy Fluids and Operational Proceduresmentioning

confidence: 99%

“…In dairy processing, the temperature of the feed and the heat-treatments used are the main alternatives for controlling membrane biofouling issues but there is a trade-off between system performance and quality of the retentates (e.g., protein concentrate from milk or whey). Even if higher temperatures increase the permeate flux (Pompei et al, 1973), it is now accepted that retentates produced at lower temperatures have better qualities in terms of less protein denaturation and slower microbial growth (Luo et al, 2015;Tang et al, 2015). In addition, lowering the microbial load by pasteurizing the feed may help by reducing adhesion of metabolically active bacteria to membranes (Koop et al, 1989;Al-Juboori and Yusaf, 2012).…”

Section: Effect Of Fouling Incidence On Biofilm Formationmentioning

confidence: 99%

“…This situation is detrimental for dairy processors because biofilms survive membrane cleaning cycles (Anand and Singh, 2013;Anand et al, 2014). Throughout a membrane's lifetime, biofilm build-up causes the continuous inoculation of filtered fluids (Tang et al, 2015) and the release of enzymes, affecting the overall quality of retentates (Teh et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, different membrane coatings have been developed to reduce bacterial adhesion to membranes (Tang et al, 2015). However, independent of the type of membrane used, bacterial adhesion to membranes and the initiation of biofilms are instead related to the type of microorganisms found in the filtered fluid (Vanysacker et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biofouling of ultrafiltration membrane by dairy fluids: Characterization of pioneer colonizer bacteria using a DNA metabarcoding approach

Chamberland

Lessard

Doyen

et al. 2017

Journal of Dairy Science

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Biofouling of filtration membranes is a major quality and performance issue for the dairy industry. Because biofilms that survive cleaning cycles become resistant over time, prevention strategies limiting the adhesion of bacteria to membranes should be prioritized for sustainable control of biofouling. However, this cannot be achieved because the pioneer bacteria colonizing these membranes are still unknown. Consequently, the objective of this study was to characterize pioneer bacteria on the filtration membrane surface and to measure the effect of filtration operational parameters on their diversity. Thus, milk and cheese whey were filtered for 5 h in concentration mode at 10 and 40°C using a laboratory-scale crossflow filtration system equipped with flat-sheet ultrafiltration membranes. Pioneer colonizer bacteria found on membranes after a chlorinated alkaline cleaning cycle were identified using a metabarcoding approach targeting the 16S ribosomal RNA genes. Our results suggested that prevention strategies targeting biofouling should consider the nature of the filtered fluid and the feed temperature (36.15 and 5.09% of the variances observed on membranes, respectively), as well as the microbial environment of the dairy processing plant. In the future, it is hypothesized that cleaning prevention strategies will be specific to each dairy processor and their operational parameters.

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Evolution of bacterial communities during the concentration and recirculation of dairy white wastewater by reverse osmosis

Alalam

Marciniak

Lessard

et al. 2022

International Dairy Journal

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Biofilm Contamination of Ultrafiltration and Reverse Osmosis Plants

Cited by 5 publications

References 55 publications

Effect of Temperature-Dependent Bacterial Growth during Milk Protein Fractionation by Means of 0.1 µM Microfiltration on the Length of Possible Production Cycle Times

Effect of Temperature-Dependent Bacterial Growth during Milk Protein Fractionation by Means of 0.1 µM Microfiltration on the Length of Possible Production Cycle Times

Biofouling of ultrafiltration membrane by dairy fluids: Characterization of pioneer colonizer bacteria using a DNA metabarcoding approach

Evolution of bacterial communities during the concentration and recirculation of dairy white wastewater by reverse osmosis

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