Cleaning UF membranes with simple and formulated solutions

Levitsky, Inna; Duek, Aviv; Naim, R.; Arkhangelsky, Elizabeth; Gitis, Vitaly

doi:10.1016/j.ces.2011.10.060

Cited by 44 publications

(22 citation statements)

References 25 publications

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“…The purpose we performed cleaning studies at the pilot-scale study here is not to scale-up the findings of previous laboratory-scale studies [16,17] but we intend to find the best conditions (combination of NaOCl concentration and soaking time) to minimize negative impacts of NaOCl while living with current membrane cleaning practice in a number of membrane filtration plants. Finding a replacement of NaOCl is needed for organic fouling control in membrane cleaning to eliminate its negative impact on membrane properties that is the next step of our research [18].…”

Section: : Introductionmentioning

confidence: 99%

Optimization of Chemical Cleaning for Improvement of Membrane Performance and Fouling Control in Drinking Water Treatment

Bogati

Goodwin

Marshall

et al. 2015

Separation Science and Technology

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Section: : Introductionmentioning

confidence: 99%

Optimization of Chemical Cleaning for Improvement of Membrane Performance and Fouling Control in Drinking Water Treatment

Bogati

Goodwin

Marshall

et al. 2015

Separation Science and Technology

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“…Fig. The less dramatic effect observed with the NaOCl cleaning of the PVDF-30 membrane is more a function of a gradual elimination of the membrane surface preservation residues [13], and not of membrane damage. The retention was calculated from the BSA concentrations in the permeate and the feed and plotted against the cleaning time.…”

Section: Resultsmentioning

confidence: 92%

“…Higher cleaning efficiency and lower fouling resistance at lower cleaning times can be explained with ATR-FTIR spectra [13]. Tab.…”

Section: Resultsmentioning

confidence: 94%

Effect of Time in Chemical Cleaning of Ultrafiltration Membranes

et al. 2012

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Chemical cleaning of ultrafiltration membranes is often considered successful when the flux through a cleaned membrane is much higher than through a pristine one. Here, a novel definition of cleaning intensity is proposed as the product of the concentration of the cleaning agent and the cleaning time (Ct), and it is shown that Ct values between 0.5 and 1.0 g h L -1 are sufficient for effective cleaning. Experiments with PES-30 and PVDF-30 membranes fouled by bovine serum albumin and cleaned with surfactant, oxidant, and formulated cleaning agents demonstrate that a good cleaning should last for 10-20 min and restore the flux through a virgin membrane. More intensive cleaning increases the membrane hydrophilicity and the water flux, but soon causes more severe fouling and even membrane disintegration.

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“…Mendoza-Roca et al [23] studied cleaning of membranes fouled by tannery wastewater with NaOH, sodium dodecyl sulfates, and two different enzymes, and results showed NaOH (1 g/L) have a better cleaning efficiency. As an oxidizing agent, NaClO has been used widely studied for its cleaning performance of membranes fouled by different matters such as milk [22,24], BSA [25], and whey [26] and showed high cleaning efficiency. But cleaning of membranes fouled by desizing wastewater containing polymethyl acrylate (PMA) was little investigated.…”

Section: Introductionmentioning

confidence: 99%