Abstract Membrane filtration of feed containing multiple species particles is a common process in the industrial setting. In this work, we propose model for suspension particle (concrete examples our are shown two and three species), each with different affinities material porous filter membrane. Using pore shape within membrane as design objective, formulate number optimization problems pertai...

This study linked the chemical potential change to high specific filtration resistance (SFR) of gel layer, and then proposed a novel membrane fouling mechanism regarding gel layer filtration, namely, Flory-Huggins based filtration mechanism. A mathematical model for this mechanism was theoretically deduced. Agar was used as a model polymer for gel formation. Simulation of the mathematical model...

The flagellated protozoan Giardia lamblia is a recognized public health problem. Intestinal infection can result in acute or chronic diarrhea with associated symptoms in humans. As part of a study to evaluate removal of G. lamblia cysts from drinking water by the processes of coagulation and dual-media filtration, we developed a methodology by using 5.0-microns-porosity membrane filters to eval...

The capacity for secondary effluent filtration of hollow fiber polypropylene membranes grafted with several zwitterionic molecules and multi-walled carbon nanotubes was evaluated. In particular, all the modifications result in significant improvement of filtration performances. The anti-fouling properties of the membrane had been increased without damaging the membrane as observed from FTIR, TG...

Hormone can be removed by membrane filtration via membrane interception, sorption and diffusion. However, the effects of operating conditions of membrane filtration on hormone removal have not been evaluated systematically. In this study, the removal of testosterone by nitrocellulose membranes under different operating conditions (e.g., initial testosterone concentrations, sample volumes, flow ...

The impact of typical anion-exchange flowthrough conditions on the IgG mass loading of an anion-exchange membrane scale-down unit (Mustang Q coin) was investigated. High performance size-exclusion chromatography and multiangle laser light scattering results suggested the presence of a small fraction of IgG aggregates with average radius >100 nm under anion-exchange flowthrough conditions. The s...

The membrane filtration with inside-out dead-end driven UF-/MF- capillary membranes is an effective process for particle removal in water treatment. Its industrial application increased in the last decade exponentially. To date, the research activities in this field were aimed first of all at the analysis of filtration phenomena disregarding the influence of backwash on the operation parameters...

Membrane processes are used for drinking water production and medical applications to remove and/or produce viruses using organic membranes. It appears that backwashing is not sufficient all the stopped by membrane. The use of “one-shot” membranes or chlorinated solution filtration can be considered with an additional cost accelerated aging respectively. inactivation bacteria, spores has been d...

Membrane processes such as microfiltration, ultrafiltration, nanofiltration and reverse osmosis have been popular subject for researchers interested in water filtration system. One of the main problems with such membrane system is biofouling, which is caused by deposition or growth of microorganisms on membrane surface. One solution to this problem, as it has been used for many years now, is ch...