Integrated membrane regeneration process for dairy cleaning-in-place

Dresch, Marlène

doi:10.1016/s1383-5866(00)00128-3

Cited by 34 publications

(14 citation statements)

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“…Consequently, it is possible to advantageously replace single use complex formulations with a re-used NaOH solution having both low g and low SS for cleaning UF membranes fouled with skimmed milk and likely with whey proteins (Daufin et al, 1991). CIP with re-used NaOH could therefore be coupled with a removal operation of SS by MF, UF or NF, which are more efficient than centrifugation (Alvarez, 2003;Dresch et al, 1999;Dresch, Daufin, & Chaufer, 2001).…”

Section: Article In Pressmentioning

confidence: 99%

The role of surface tension of re-used caustic soda on the cleaning efficiency in dairy plants

Alvarez

Gésan-Guiziou²,

Daufin³

2007

International Dairy Journal

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Section: Article In Pressmentioning

confidence: 99%

The role of surface tension of re-used caustic soda on the cleaning efficiency in dairy plants

Alvarez

Gésan-Guiziou²,

Daufin³

2007

International Dairy Journal

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“…In fact, regeneration tests (data not shown) carried out on soda only soiled by 1% (v/v) lactose of a 50 g.L −1 stock solution showed the presence of the same brown pigments and COD values of these regenerated solutions were decreased by half compared to those contaminated with 1% (v/v) milk. The browning phenomenon was also observed after regeneration of dairy CIP solutions using membrane ultrafiltration process (Dresch et al, 2001).…”

Section: Discussionmentioning

confidence: 89%

Regeneration of Lyes for Cleaning-In-Place (CIP) Processes in Dairies: Comparison of Recycled Potash and Soda Solutions Cleaning Properties

Furic¹,

Elain²,

Blel³

et al. 2015

American Journal of Applied Sciences

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Abstract:The regeneration of lyes for their integration in the dairy CIP was investigated applying an original process combining adsorption/coagulation and flocculation operations. Solutions of potassium hydroxide (KOH) and caustic soda (NaOH) soiled with 1% (v/v) of whole milk were submitted up to twenty successive regeneration cycles. The multiple recycling of the regenerated solutions was found to modify their physicochemical characteristics that are an increase of the turbidity, total Chemical Oxygen Demand (COD t ) and Total Nitrogen (TN) content simultaneously with a decrease of surface tension (γ) and equilibrium contact angle (θ e ). Along regeneration cycles, potash solutions exhibit quite a distinct trend from soda, especially a lower TN increase and a faster reduction of γ leading to a significant lower value of the critical micelle concentration (32 Vs. 36 mN.m −1 ). These alterations can be correlated with the accumulation of surfactant molecules in the cleaning solutions derived from the saponification of fatty acids and the degradation of amino acids that can originate an improvement of the cleaning efficiency when re-used in CIP process.

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“…Dresch et al (2001) pointed out the NF technology as a promising technique compared to decantation, centrifugation and microfiltration (0.1µm cut-off) for the regeneration of waste NaOH solutions from an industrial CIP system. However, Gésan-Guiziou et al (2007) reported that MF could be more adequate operation based on that the surfactant contained in the spent detergent is only slightly rejected by the membrane and costs of MF operation are much lower (lower TMP) compared to UF and NF costs, in spite of that the COD permeate when using MF was much higher and its possible uses can be limited.…”

Section: Recovery Of Cleaning-in-place Solutionsmentioning

confidence: 99%