Flow and fouling in elastic membrane filters with hierarchical branching pore morphology

Zhengyi Chen; Shi Yue Liu; Ivan C. Christov; Pejman Sanaei

doi:10.1063/5.0054637

Comparison of Surface Pore Morphology of Two Brands of Membrane Filters

Applied and Environmental Microbiology ◽

10.1128/aem.31.2.316-319.1976 ◽

1976 ◽

Vol 31 (2) ◽

pp. 316-319 ◽

Cited By ~ 3

Author(s):

Jon H. Standridge

Keyword(s):

Pore Morphology ◽

Membrane Filters

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Transfer Technique for Electron Microscopy of Membrance Filter Samples

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010005278x ◽

1974 ◽

Vol 32 ◽

pp. 554-555

Author(s):

Lawrence W. Ortiz ◽

Bonnie L. Isom

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Pore Size ◽

Membrane Filters ◽

Size Dependent

A procedure is described for the quantitative transfer of fibers and particulates collected on membrane filters to electron microscope (EM) grids. Various Millipore MF filters (Millipore AA, HA, GS, and VM; 0.8, 0.45, 0.22 and 0.05 μm mean pore size) have been used with success. Observed particle losses have not been size dependent and have not exceeded 10%. With fibers (glass or asbestos) as the collected media this observed loss is approximately 3%.

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46. Collection of Airborne Mycotoxin on Membrane Filters and Analysis Using High-Pressure Liquid Chromatography with Ultraviolet Absorbance Detection

10.3320/1.2765550 ◽

1999 ◽

Cited By ~ 1

Author(s):

R. Salazar ◽

Y. Hammad ◽

P. Sherblom

Keyword(s):

High Pressure ◽

Liquid Chromatography ◽

High Pressure Liquid Chromatography ◽

Ultraviolet Absorbance ◽

Membrane Filters ◽

Absorbance Detection

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Blood Cell Separation Device Using Serially Connected Membrane Filters for Adapting to Blood Flow Properties

IEEJ Transactions on Sensors and Micromachines ◽

10.1541/ieejsmas.129.380 ◽

2009 ◽

Vol 129 (11) ◽

pp. 380-386 ◽

Cited By ~ 1

Author(s):

Taizo Kobayashi ◽

Daiki Kato ◽

Hiroyuki Koga ◽

Kenichi Morimoto ◽

Makoto Fukuda ◽

...

Keyword(s):

Blood Flow ◽

Blood Cell ◽

Cell Separation ◽

Flow Properties ◽

Separation Device ◽

Membrane Filters

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Performance Characteristics of Methods for the Bacteriological Examination of Water

Water Science & Technology ◽

10.2166/wst.1993.0312 ◽

1993 ◽

Vol 27 (3-4) ◽

pp. 1-13 ◽

Cited By ~ 6

Author(s):

Arie H. Havelaar ◽

Siem H. Heisterkamp ◽

Janneke A. Hoekstra ◽

Kirsten A. Mooijman

Keyword(s):

Sensitivity And Specificity ◽

Measurement Errors ◽

Systematic Errors ◽

General Concept ◽

Growth Characteristics ◽

Performance Characteristics ◽

Logarithmic Scale ◽

Bacteriological Examination ◽

Membrane Filters

The general concept of measurement errors is applied to quantitative bacteriological counts on membrane filters or agar plates. The systematic errors of these methods are related to the growth characteristics of the medium (recovery of target organisms and inhibition of non-target organisms) and to its differential characteristics (sensitivity and specificity). Factors that influence the precision of microbiological counts are the variation between replicates, within samples, between operators and between laboratories. It is also affected by the linearity of the method, the verification rate and, where applicable, the number of colonies subcultured for verification. Repeatability (r) and reproducibility (R) values can be calculated on the logarithmic scale.

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Evaluation of the disinfection potential of low chlorine concentrations in tap water using immobilised enterococcus faecium in a continuous flow device

Water Science & Technology ◽

10.2166/wst.1997.0713 ◽

1997 ◽

Vol 35 (11-12) ◽

pp. 77-80 ◽

Cited By ~ 1

Author(s):

A. Wiedenmann ◽

M. Braun ◽

K. Botzenhart

Keyword(s):

Distribution System ◽

Enterococcus Faecium ◽

Continuous Flow ◽

Tap Water ◽

Test System ◽

Batch Experiments ◽

Membrane Filters ◽

Upper Limit ◽

Flow Device ◽

Faecal Streptococci

A simple continuous flow device in which bacteria were immobilised on membrane filters and flushed with tap water with free chlorine residuals of 0.05, 0.1, 0.2 and 0.4mg/L at pH 7.7 and 10°C, has been used for disinfection experiments with faecal streptococci. A 99.99% reduction of Enterococcus faecium was observed between 3.4–5.2min (0.05mg/L), between 2.8–4.1min (0.1mg/L), between 1.7–3.1min (0.2mg/L) and between 0.8–2.1min (0.4mg/L). CT-products covered a range of 0.17 (0.05mg/L, lower limit) up to 0.85mg/L/min (0.4mg/L, upper limit). The test system is suggested as a more reliable alternative to batch experiments when the disinfection potential of low chlorine concentrations acting for several minutes has to be evaluated. The system cannot be used to demonstrate exact reduction kinetics but it allows the calculation of CT values and the evaluation of the disinfection potential of chlorinated water at any point of a distribution system where initial chlorine concentrations may have already remarkably declined.

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Shock loading of fixed flexible thread and orthotropic elastic membrane

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2003.1.003 ◽

2003 ◽

Vol 3 ◽

pp. 52-59

Author(s):

S.S. Komarov ◽

N.Yu. Tsvileneva ◽

N.I. Miskaktin

Keyword(s):

Numerical Methods ◽

Dynamic Loading ◽

Elastic Deformation ◽

Numerical Algorithm ◽

Shock Loading ◽

Elastic Membrane ◽

Wave Dynamics ◽

Elastic Membranes ◽

Pneumatic Structures

The main problems of the wave dynamics of flexible filaments and elastic membranes are solved. The reliability of the numerical algorithm proposed by the authors for calculating the elastic deformation of pneumatic structures under dynamic loading is confirmed when compared with the results of known studies obtained by analytical and numerical methods.

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