Simulation of membrane ageing to go ahead in fouling and cleaning understanding during skim milk ultrafiltration

Rabiller-Baudry, Murielle; Thomas, Patrick; Nguyen, Thi Khan Huyen; Girard, Jean Pierre; Jastimi, Massoud El Mansour El; Loulergue, Patrick

doi:10.1016/j.fbp.2018.10.004

Cited by 6 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results suggest that mechanical degradation cannot be reached by only MW irradiation. However this assumption is in contradiction with our own more recent study highlighting that MW conditions can be found to reach the expected ageing state [29]. Regardless of this last remark, conditions using MW exist to reach ageing state representative of progressive membrane degradation at industrial scale.…”

Section: Discussioncontrasting

confidence: 85%

How microwaves can help to study membrane ageing

Rabiller-Baudry

Paquin

Leperoux

et al. 2019

Environmental Technology

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Section: Discussioncontrasting

confidence: 85%

How microwaves can help to study membrane ageing

Rabiller-Baudry

Paquin

Leperoux

et al. 2019

Environmental Technology

View full text Add to dashboard Cite

show abstract

“…The full autopsy of these two membrane elements suggested that the irreversible fouling remaining before the membrane final cleaning increased with the received chlorine dose. This increase of foulant protein amount is also in good agreement with quantification achieved on flat membrane deliberately aged by NaOCl under micro-wave conditions and reported in [44]. Such results appeared in better agreement with those expected contrary to the resistance calculations which gave relatively close results between 2,000 and 2,800 ppm.d dose.…”

Section: Figure 7: Variation Of the Membrane Resistance (•: R Mdose ) And Of The Residual Irreversible Fouling Resistance (▲: R Irreversisupporting

confidence: 91%

“…To answer, this study provides complements to our previous systematic studies devoted to: (1) the cleanability of a pristine PES/PVP UF membrane [18] and (2) reporting on the cleanability decrease due to NaOCl exposure [43,44]. Especially, this paper reports on the misleading interpretation that can be drawn from water flux recovery during the membrane life, provoking the entrance into a cycle of fouling accumulation only evidenced when irreversible damage is done and service lifetime considerably shorten.…”

Section: Overview Of Membrane Degradation During Disinfection Stepmentioning

confidence: 56%

See 1 more Smart Citation

Consequences of membrane aging on real or misleading evaluation of membrane cleaning by flux measurements

Rabiller-Baudry

Loulergue

Girard

et al. 2021

Separation and Purification Technology

Self Cite

View full text Add to dashboard Cite

Skim milk ultrafiltration is worldwide used in dairy. Its management at industrial scale is based on the permeate flux mastering, the first bottleneck, and consequently on the nature of the overall fouling which is not yet fully understood with respect to the membrane lifespan. The second bottleneck is the mastering and control of the cleaning efficiency aiming at the full removal of the initial irreversible fouling mainly made of proteins. In this study, we have deliberately chemically aged several spiral wound membrane elements by filtering NaOCl solution (400 ppm in total free chlorine at pH 8.0 and 50°C) up to a cumulative chlorine dose of 2,800 ppm.d. The critical/threshold and limiting fluxes have been proven to increase with the membrane ageing together with a decrease in their related transmembrane pressure. This suggest that, at industrial scale, UF might be managed with respect to the chlorine dose received by the membrane during its service life. SEM and Raman spectroscopy have been used to localise the initial irreversible fouling whereas ATR-FTIR was the tool to quantify proteins on membrane. Membrane cleaning was achieved by a non-oxidative alkaline detergent removing the hereafter called "removable fouling" whereas a "residual fouling" remained on/in the membrane. However, the following NaOCl treatment (achieved for disinfection purpose at industrial scale) also acts both as cleaner (polishing the alkaline step by removing part of the residual fouling) and as degradation agent toward the membrane. Unambiguously NaOCl induced a significant decrease in the membrane intrinsic hydraulic resistance associated with an increase of the irreversible fouling, either initial or residual, build during the following skim milk UF. This paper shows how degradation and fouling can transiently compensate each other and lead to the impression of an initial water flux recovery. This phenomenon can lead to misinterpretation of the membrane cleanliness in the specific case of aged membranes. Indeed, for a received chlorine dose close to 400 ppm.d at pH= 8.0, an irreversible residual fouling can remain, strongly anchored in/on the membrane with a water flux recovery after cleaning only 15% less than that of the pristine membrane. This residual fouling favours the rapid build-up of more and more irreversible fouling during the next skim milk filtration steps. However, with respect to the accuracy on flux measurement, the amplitude of the problem will be underestimated, preventing from getting rid of the first and crucial accumulated layers and consequently leading to an irreversible accelerated degrading process. Relationships have been found between the received chlorine dose and the aged membrane resistance and the residual irreversible fouling that could be used for management at industrial scale.

show abstract

“…For simplicity, membrane ageing was excluded from the problem formulation, but the filtration efficiency of membranes does decrease over time. Consequently, as membranes age, fouling by skim milk increases, critical and limiting conditions of filtration are modified and cleanliness decreases (Rabiller-Baudry et al, 2019). Considering membrane ageing would require continuously adapting filtration and cleaning conditions throughout the lifetime of the membrane to ensure optimal operating conditions.…”

Section: Perspectivesmentioning

confidence: 99%

Formulating multiobjective optimization of 0.1 μm microfiltration of skim milk

Belna

Ndiaye

Taillandier

et al. 2020

Food and Bioproducts Processing

View full text Add to dashboard Cite

Optimizing 0.1 m microfiltration (MF) of skim milk requires formulating optimization of a food processing problem with conflicting objectives that consider product composition, process variables and operating conditions. Formulating the MF optimization problem requires knowledge from experts about food processing, dairy product production and equipment manufacturing. This study formulated the MF optimization problem in an innovative manner: as a multiobjective optimization problem that considered the entire MF process. Eleven experts were interviewed to identify the knowledge domains necessary, which required 36 interviews over a total of 14 h. Formulation was achieved from the MF process to the compositions of the permeate and retentate fractions. Five conflicting optimization objectives, influenced by 36 variables, were set up to formulate the problem. Five of the variables were decision variables used to control the MF, and the other 31 were intermediate calculation variables. This approach opens new perspectives for optimization of food processes that integrate expert knowledge.

show abstract

Simulation of membrane ageing to go ahead in fouling and cleaning understanding during skim milk ultrafiltration

Cited by 6 publications

References 22 publications

How microwaves can help to study membrane ageing

How microwaves can help to study membrane ageing

Consequences of membrane aging on real or misleading evaluation of membrane cleaning by flux measurements

Formulating multiobjective optimization of 0.1 μm microfiltration of skim milk

Contact Info

Product

Resources

About