A new design of microfiltration system and application to wastewater treatment

2000 ◽  
Vol 41 (10-11) ◽  
pp. 181-188
Author(s):  
D.J. Chang ◽  
S.H. Chen ◽  
C.Y. Chang ◽  
S.S. Lin ◽  
J.S. Chang
Keyword(s):  
Pore Size ◽  
Membrane Fouling ◽  
Cross Flow ◽  
Reverse Direction ◽  
Feed Concentration ◽  
Force System ◽  
Concentrated Suspension ◽  
Membrane Pore ◽  
Stock Tank ◽  
Membrane Pore Size

A new microfiltration system with two sets of dead-end membrane cells and driven by a piston force system was designed in this study. In this system, suction of the filtrate was through the membrane in the reverse direction with a piston to backwash and reduce membrane fouling. In addition, after a few forward-reverse filtration cycles, the concentrated suspension of particles or solute on the retentate side was discharged into the stock tank under the cross flow condition. For maximizing the filtrate volume, it was found that the optimum times for forward and reverse filtration were 90 s and 3 s respectively, and the discharge frequency of retentate was 1 time per cycle. Moreover, it was also found that the filtrate volume increased with an increase in particle size and membrane pore size but decreased with an increase in feed concentration. Furthermore, an optimal filtrate volume existed on effecting the pressure drop. Finally, it could be used efficiently to treat and recycle the backwash wastewater from a rapid sand filter by a membrane with pore size of 0.1 and 0.22 μm.

scholarly journals Effects of mass retention of dissolved organic matter and membrane pore size on membrane fouling and flux decline

2009 ◽  
Vol 43 (2) ◽  
pp. 389-394 ◽  
Author(s):  
Cheng-Fang Lin ◽  
Angela Yu-Chen Lin ◽  
Panchangam Sri Chandana ◽  
Chao-Yuan Tsai
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Size ◽  
Membrane Fouling ◽  
Membrane Pore ◽  
Flux Decline ◽  
Membrane Pore Size

The effect of apple cider characteristics and membrane pore size on membrane fouling

LWT ◽  
2015 ◽  
Vol 64 (2) ◽  
pp. 974-979 ◽  
Author(s):  
Dongjun Zhao ◽  
Evonne Lau ◽  
Shan Huang ◽  
Carmen I. Moraru
Keyword(s):  
Pore Size ◽  
Membrane Fouling ◽  
Membrane Pore ◽  
Apple Cider ◽  
Membrane Pore Size

scholarly journals Influence of Membrane Properties on Pineapple Wine Clarification and Fouling Behavior

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
W. Youravong ◽  
M. Phukdeekhong ◽  
P. Taksinpatanapong
Keyword(s):  
Pore Size ◽  
Membrane Fouling ◽  
Polyvinylidene Fluoride ◽  
Pilot Scale ◽  
Membrane Properties ◽  
Permeate Flux ◽  
Membrane Pore ◽  
Dead End ◽  
Membrane Pore Size ◽  
Stirred Cell

The experiment was carried out to investigate the influence of membrane pore size and hydrophobicity on the quality of clarified pineapple wine and fouling characteristics, using stirred cell dead–end microfiltration. The test membranes were mixed cellulose acetate (MCE, pore size 0.45 and 0.22 μm), modified polyvinylidene fluoride (MPVDF, 0.22 μm) and polyethersulfone (PESF, 0.22 μm). It was found that all types of membrane successfully clarified the pineapple wine. The membrane pore size and hydrophobicity played an importance role in membrane fouling, both reversible and irreversible. Regarding the permeate flux and fouling, 0.45 μm MCE was the most suitable for pineapple wine clarification. However, intensive organoleptic test with pilot scale would be needed.

Flow and fouling in membrane filters: effects of membrane morphology

2017 ◽  
Vol 818 ◽  
pp. 744-771 ◽  
Author(s):  
P. Sanaei ◽  
L. J. Cummings
Keyword(s):  
Pore Size ◽  
Void Fraction ◽  
Membrane Fouling ◽  
Membrane Pore ◽  
Membrane Filters ◽  
Membrane Morphology ◽  
Specific Morphology ◽  
Fine Control ◽  
Membrane Pore Size ◽  
Optimum Filtration

Membrane filters are used extensively in microfiltration applications. The type of membrane used can vary widely depending on the particular application, but broadly speaking the requirements are to achieve fine control of separation, with low power consumption. The solution to this challenge might seem obvious: select the membrane with the largest pore size and void fraction consistent with the separation requirements. However, membrane fouling (an inevitable consequence of successful filtration) is a complicated process, which depends on many parameters other than membrane-pore size and void fraction; and which itself greatly affects the filtration process and membrane functionality. In this work we formulate mathematical models that can (i) account for the membrane internal morphology (internal structure, pore size and shape, etc.); (ii) describe fouling of membranes with specific morphology; and (iii) make some predictions as to what type of membrane morphology might offer optimum filtration performance.

scholarly journals Optimization of protein fractionation by skim milk microfiltration: Choice of ceramic membrane pore size and filtration temperature

2016 ◽  
Vol 99 (8) ◽  
pp. 6164-6179 ◽  
Author(s):  
Camilla Elise Jørgensen ◽  
Roger K. Abrahamsen ◽  
Elling-Olav Rukke ◽  
Anne-Grethe Johansen ◽  
Reidar B. Schüller ◽  
...  
Keyword(s):  
Pore Size ◽  
Ceramic Membrane ◽  
Skim Milk ◽  
Protein Fractionation ◽  
Membrane Pore ◽  
Membrane Pore Size

Relationship between Cake Structure and Membrane Pore Size in Crossflow Filtration of Microbial Cell Suspension Containing Fine Particles

2001 ◽  
Vol 34 (12) ◽  
pp. 1524-1531 ◽  
Author(s):  
TAKAAKI TANAKA ◽  
YOSHINOBU YAMAGIWA ◽  
TETSUYA NAGANO ◽  
MASAYUKI TANIGUCHI ◽  
KAZUHIRO NAKANISHI
Keyword(s):  
Pore Size ◽  
Cell Suspension ◽  
Fine Particles ◽  
Microbial Cell ◽  
Crossflow Filtration ◽  
Membrane Pore ◽  
Membrane Pore Size
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