OBJECTIVES: The performance of spiral-wound nanofiltration (NF) and ultrafiltration (UF) membranes was investigated in terms of natural organic matter (NOM) rejection and associated NOM fouling. The study objectives focused on • demonstrating the effects of both hydrophobic and electrostatic interactions between NOM components and the membrane surface • determining influential factors (water qu...

Crossflow filtration techniques (microand ultrafiltration), using inorganic membranes, were employed to clarify apple juice. Changes in the polyphenol composition (procyanidins, hydroxycinnamic derivatives, and dihydrochalcones) were monitored throughout the clarification process by means of a simple and reliable HPLC procedure. A factorial repeated measures design was constructed to ascertain ...

Micropollutants pose a significant threat to water quality, aquatic life, and public health. A catalytic polymeric membrane, combining membrane filtration peroxymonosulfate (PMS) activation provides an alternative option their treatment. In this work, CoFe2O4 based particles were blended with polyethersulfone (PES) polymer UF (ultrafiltration) membranes fabricated by non-solvent induced phase i...

Purpose. To develop a method of using salts humic acids obtained from brown coal Ukraine for sorption heavy metal ions and their extraction ultrafiltration membranes. Methodology. Unique laboratory equipment has been developed to determine the capacity substances with concentration 0 20 mg/l in relation (Cu2+, Pb2+, Cd2+, Hg2+, Zn2+, Co2+) 5 mg/l. The results proximate ultimate analyzes, as wel...

Efficiency of a sequential ultrafiltration – ion exchange purification system was studied by testing separation of an anionic surfactant (SDBS) from aqueous solutions. Commercially available ultrafiltration membranes with cut-off values of 5, 10, and 30 kDa were used for the tests. The ion exchange processes were carried out on five types of ion-exchange resins – both macroporous and gel-based....

membranes to completely remove, replace, or lower the concentration of salts or solvents from solutions containing proteins, peptides, nucleic acids, and other biomolecules. The process selectively utilizes permeable (porous) membrane filters to separate the components of solutions and suspensions based on their molecular size. An ultrafiltration membrane retains molecules that are larger than ...

Nephelometry of serum before and after ultrafiltration through cellulose membranes affords a simple and rapid physical method for separately estimating pre..lipoproteins and chylomicrons in their native state. The method was rigorouslyevaluated through correlativestudies with chemical analyses, electron microscopy, and electrophoresis. Together, the data indicate that this technique, combined w...

Present study highlights on isolation of bioactive peptide from the sesame protein hydrolysate with an objective of better utilization sesame meal. Sesame protein isolate was enzymatically modified to prepare sesame protein hydrolysate using enzyme ‘Protease A Amano 2G’ in an enzyme membrane reactor and the hydrolysate was subsequently fractionated by ultrafiltration using membranes of decreasi...

Methods for determining ultrafiltrable calcium in serum (UFCa) are comprehensive and time-consuming because pH must be strictly controlled, either by anaerobic technique throughout the process or by saturating the sera with C02-02 mixtures. Farese et al. (1) reported a simple method for separating diffusible calcium in serum by centrifugation through high-flux ultrafiltration membranes. Anaerob...

Textile industry produces millions of tons waste annually, which is predominantly incinerated or landfilled. Cotton textile comprises a quarter total production, and although being renewable, its production highly chemical- water-intensive, rising the need for effective cotton recycling. This study presents an investigation whether it possible to utilize as cellulose source fabrication membrane...