study on correlation of filtration performance and charge

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Next to the pore size distribution surface charge is considered to be one main factor in the separation performance of ultrafiltration (UF) membranes By applying an external surface potential onto an electro-conductive UF membrane electrostatic induced rejection was investigated This study introduces in a first part a relatively simple but yet not reported technology of membrane Clustered-charge ion exchangers exhibit higher affinity capacity and selectivity than their dispersed-charge counterparts of the same total charge density In the present work we monitored the transport behavior of an anionic protein near clustered-charge adsorbent surfaces using Fluorescence Correlation Spectroscopy We can resolve protein free diffusion hindered diffusion and association

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In the present study the performance was further improved by properly and gradually decreasing the baffled-ring distance along the cross-flow channel coupled with properly adjusting the number of baffled rings This theoretical analysis is based on the mass and momentum balances as well as the application of the resistance-in-series model The correlation predictions are confirmed with the

28 02 2014Cardio-renal syndromes are characterized by the impairment of cardiac and renal functions Plasma and urinary neutrophil gelatinase-associated lipocalin (NGAL) and plasma B-type natriuretic peptide (BNP) are markers of acute kidney injury (AKI) and heart failure (HF) respectively The aim of this study was to assess the effect of the reduction of glomerular filtration rate (GFR) on plasma

Study on correlation of filtration performance and charge behavior and crystalline structure for melt‐blown polypropylene electret fabrics Huiming Xiao Laboratory of Electret its Application Hangzhou Dianzi University Hangzhou People's Republic of China 310018 Search for more papers by this author Jiyang Gui Laboratory of Electret its Application Hangzhou Dianzi University

Clustered-charge ion exchangers exhibit higher affinity capacity and selectivity than their dispersed-charge counterparts of the same total charge density In the present work we monitored the transport behavior of an anionic protein near clustered-charge adsorbent surfaces using Fluorescence Correlation Spectroscopy We can resolve protein free diffusion hindered diffusion and association

This study investigated the correlation between the antibacterial ability of silver nanoparticle air filters with the related dust loading In addition a decay equation with which the life cycle of the antibacterial air filters could be predicted was developed Samples of a HEPA (High Efficiency Particulate Air) filter were coated with an antibacterial agent silver nanoparticles which were

Effect of glomerular filtration rate impairment on

28 02 2014Cardio-renal syndromes are characterized by the impairment of cardiac and renal functions Plasma and urinary neutrophil gelatinase-associated lipocalin (NGAL) and plasma B-type natriuretic peptide (BNP) are markers of acute kidney injury (AKI) and heart failure (HF) respectively The aim of this study was to assess the effect of the reduction of glomerular filtration rate (GFR) on plasma

The next of our study will focus on (1) further improve the anode performance (2) design and realize a high-performance air-cathode (3) test our electrodes in different modified MFC technologies and (4) build MFCs in pilot scale to study the scalability of the new MFC electrodes Nanoscale tools In-situ TEM electrical measurement Atomic arrangements and electrical properties are closely

Nanofiltration (NF) is a relatively recent membrane filtration process used most often with low total dissolved solids water such as surface water and fresh groundwater with the purpose of softening (polyvalent cation removal) and removal of disinfection by-product precursors such as natural organic matter and synthetic organic matter Nanofiltration is also becoming more widely used in food

Staged coagulation-flocculation can enhance CEPT performance For example at primary clarifier overflow rates of over 6 m/h (3 600 gpd/ft2) during peak flow treatment TSS and BOD removals of 80 to 95% and 58 to 68% were achieved respectively using 60 mg/l ferric chloride followed by 15 mg/l polyaluminum chloride followed by 0 5 mg/l anionic polymer The total reaction time from the

tude de la performance des filtres Vortisand en prsence d'un balayage de surface par Selma DAALACH MMOIRE PRSENT L'COLE DE TECHNOLOGIE SUPRIEURE COMME EXIGENCE PARTIELLE L'OBTENTION DE LA MAITRISE AVEC MMOIRE EN GNIE DE L'ENVIRONNEMENT M Sc A MONTRAL LE 19 JANVIER 2017 COLE DE TECHNOLOGIE SUPRIEURE

The filtration performance of five N95FFR models following long-term storage removal of charge using isopropanol alcohol (IPA) autoclaving or treatment with gamma-radiation was assessed using a TSI 8130 automated filter tester Statistically significant differences were found in the penetration (P) pressure drop (Δp) and quality factor (qf) between non-expired and expired N95 models 3M

This study explored the effect of particle charge on the filtration of fly ash particles The main conclusions are presented as follows The particle charge distributions under three charging voltages were measured by ELPI The particles in all size ranges carried a negative net charge which increased with charging voltage and particle diameter

We found a correlation between ethanol content/surface tension and rolling time/distance so we used the same device to estimate the alcoholic strength of Chinese liquors and to predict the surface tension of ethanol aqueous solutions Full article (This article belongs to the Special Issue Polymeric Materials for Filtration and Purification) Show Figures Graphical abstract attachment

Parallel Increase in Urinary Excretion

OBJECTIVE —Increased urinary excretions of several plasma proteins with different molecular radii 55 and different isoelectric points (pI) such as IgG ceruloplasmin transferrin and orosomucoid have been independently reported to precede the development of microalbuminuria in diabetic patients We examined whether increases in urinary excretions of these proteins would be in parallel

Emerging infectious diseases (EIDs) are a significant burden on global economies and public health Most present personal protective equipment used to prevent EID transmission and infections is typically devoid of antimicrobial activity We report on green bioprotective nanofibrous membranes (RNMs) with rechargeable antibacterial and antiviral activities that can effectively produce biocidal

We found a correlation between ethanol content/surface tension and rolling time/distance so we used the same device to estimate the alcoholic strength of Chinese liquors and to predict the surface tension of ethanol aqueous solutions Full article (This article belongs to the Special Issue Polymeric Materials for Filtration and Purification) Show Figures Graphical abstract attachment

The principle finding of this report is that both commercial and a novel material used for N95 mask filters can endure many cycles of disinfection by ozone gas (20 ppm for 30 minutes) without detectable degradation or loss of filtration efficiency N95 masks and surgical masks (hereafter referred to as masks) typically use a filtration material fabricated from meltblown polypropylene nbsp To

Filtration performance of NIOSH-approved N95 and P100 filtering-facepiece respirators against 4-30 nanometer size nanoparticles J Occup Environ Hyg 5: 556 – 564 [Google Scholar]) One study tested the filtration efficiency of N95 FFRs for Mycobacterium tuberculosis using simulant bacteria (16 Qian Y Willeke K Grinshpun S A 1998

However its filtration performance is gradually decreased by exposure to organic solvents which limits the application of electret filters The effect of ethanol exposure on the filtration performance of polypropylene electret filters was investigated experimentally to clarify the charge decay phenomenon in this study Experimental results

The objective of the present research was to numerically investigate the transport and deposition of particles in porous media at the pore scale Firstly a developed coupled lattice Boltzmann method (LBM) and discrete element method (DEM) is used to simulate the fluid-particle flow LBM is employed to describe the fluid flow around fibers whereas DEM is used to deal with the particle dynamics

Electrostatic charge is a treatment given to synthetic media to enhance filtration performance on fine particles Coarser fibers can be used to create a more open structure resulting in lower pressure drop Typically electrostatic charged synthetic material loses its charge over time which leads to a significant reduction in performance To

Biofunctionalisation of p-doped silicon with cytochrome c 553 minimises charge recombination and enhances photovoltaic performance of the all-solid-state photosystem I-based biophotoelectrode† Julian David Janna Olmos ab Philippe Becquet c Dominik Gront d Jarosław Sar e Andrzej Dąbrowski e Grzegorz Gawlik e Marian Teodorczyk e Dorota Pawlak ef and Joanna Kargul * a a Solar Fuels

Fluorescence Correlation Spectroscopy Study of Protein Transport and Dynamic Interactions with Clustered-Charge Peptide Adsorbents Charlisa R Daniels‡ Lydia Kisley‡ Hannah Kim† Wen-Hsiang Chen† Mohan- Vivekanandan Poongavanam# Carmen Reznik‡ Katerina Kourentzi† Richard C Willson† # and Christy F Landes‡ * †Department of Chemical Biomolecular Engineering

In this study we replace the simulated colloid‐surface collisions in idealized models with experimental column‐scale data on apparent colloid‐surface collisions A new correlation equation is obtained by minimizing the difference between η determined by the correlation equation and that determined experimentally using data from a collection of experiments for favorable conditions for