The effect of turbulence promoter on cross-flow microfiltration of yeast suspensions: A response surface methodology approach

Jokić, Aleksandar; Zavargo, Zoltan Z.; Šereš, Zita; Tekić, Miodrag N.

doi:10.1016/j.memsci.2009.12.037

Cited by 57 publications

(48 citation statements)

References 23 publications

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“…Used Kenics static mixer had 30 helical mixing elements (diameter of 5 mm) made from twisted (180º) thin flat strips. Every of 30 helical elements in the series was twisted for 90º around its own axis compared to the neighbouring element [8].…”

Section: Methodsmentioning

confidence: 99%

“…The permeate flux during microfiltration influenced by Kenics static mixer was determined as permeate flux improvement (FI) which was defined as the relative increase in permeate flux during usage of static mixer and was calculated by formula [8]:…”

Section: Design Of Experiments and Statistical Analysismentioning

confidence: 99%

“…The efficiency of the Kenics static mixer as a turbulence promoter was determined by reduction of specific energy consumption (ER) which is one of the leading parameter of importance from the economic viewpoint. Specific energy consumption was defined as the power dissipated per unit volume of permeates and can be calculated as follows [8]:…”

Section: Design Of Experiments and Statistical Analysismentioning

confidence: 99%

“…Best known among static mixers are Kenics, HEV, KMS and KMX mixers by Chemineer Inc., Dayton, OH and the SMX and SMX plus mixers by Sulzer Chemtech, Switzerland [7]. A static mixer, as one of the static turbulence promoters, consists of serially connected fixed elements, accommodated in a tube which provides fluid mixing when is placed inside the tubular membrane [8]. In this work, a Kenics static mixer is utilized to study permeate flux changes during cross-flow microfiltration of steepwater from corn starch industry.…”

Section: Introductionmentioning

confidence: 99%

“…In this work, a Kenics static mixer is utilized to study permeate flux changes during cross-flow microfiltration of steepwater from corn starch industry. Many studies reported usage of the Kenics static mixers and its positive influence on the permeate flux increase during microfiltration of different feed suspensions (yeast, skim milk, wheat starch) as well as in wastewater treatment because of the unique flow patterns [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Data-driven Modelling of Microfiltration Process with Embedded Static Mixer for Steepwater from Corn Starch Industry

Šereš

Dokić

Ikonić

et al. 2017

Period. Polytech. Chem. Eng.

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Section: Methodsmentioning

confidence: 99%

Section: Design Of Experiments and Statistical Analysismentioning

confidence: 99%

Section: Design Of Experiments and Statistical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Data-driven Modelling of Microfiltration Process with Embedded Static Mixer for Steepwater from Corn Starch Industry

Šereš

Dokić

Ikonić

et al. 2017

Period. Polytech. Chem. Eng.

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Application of Cross‐Flow Microfiltration for Purifying Solvent Naphtha with Ceramic Membranes

et al. 2011

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The microfiltration process of solvent naphtha 200 containing impurities was studied using multichannel ceramic membranes with pore diameters of 0.5 and 0.8 lm. The effects of operating time, transmembrane pressure, cross-flow velocity, and temperature on permeate flux and rejection were investigated. The scanning electron microscop and energy dispersive spectrometry were conducted for the clean and fouled membranes. Effect of backflushing on permeate flux was also studied. Results show that it is possible to recover over 94 % of the original flux by a program of backflushing. A concentration process was carried out and furthermore, various membrane resistances were calculated. Finally, commercial detergent, HNO 3 , and NaOH + NaClO cleaning stages were used for the 0.5-lm membrane.

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Improving energy efficiency of Bacillus velezensis broth microfiltration in tubular ceramic membrane by air sparging and turbulence promoter

Jokić

Pajčin

Grahovac

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Popularity of biocontrol has increased due to the growing environmental concerns and the demand for organic products. It is considered as a sustainable practice for efficient agricultural production. Microbial biopesticides offer environment‐friendly biotechnological alternative to chemical control of plant diseases and pests. Due to its advantages in cell separation cross‐flow microfiltration has emerged as a powerful alternative to the conventional separation methods. However, the flux enhancement remains to be addressed. This study has estimated the use of flux improvement techniques for biomass harvesting by microfiltration using tubular ceramic membranes. Investigated methods for flux enhancement were turbulence promoter, i.e. Kenics static mixer, two‐phase flow (air sparging) and the combination of these two methods. RESULTS Significant flux improvement coincides with a reduction in specific energy consumption, while at the same time Bacillus velezensis cells have retained viability and antibacterial activity. The highest values of flux and corresponding improvement, compared to the microfiltration without enhancement techniques, are obtained in the case of combining Kenics static mixer and two‐phase flow (133.4 L m−2 h−1 and 502%). Flux improvement for air sparging was 134%, for turbulence promoter alone flux increase was 434%. CONCLUSION The methods proposed herein have achieved effective flux enhancement for cell harvesting. The obtained results also suggest encouraging basis to promote large‐scale economical production of biomass for biocontrol application. © 2019 Society of Chemical Industry

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The effect of turbulence promoter on cross-flow microfiltration of yeast suspensions: A response surface methodology approach

Cited by 57 publications

References 23 publications

Data-driven Modelling of Microfiltration Process with Embedded Static Mixer for Steepwater from Corn Starch Industry

Data-driven Modelling of Microfiltration Process with Embedded Static Mixer for Steepwater from Corn Starch Industry

Application of Cross‐Flow Microfiltration for Purifying Solvent Naphtha with Ceramic Membranes

Improving energy efficiency of Bacillus velezensis broth microfiltration in tubular ceramic membrane by air sparging and turbulence promoter

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