Macroor micro-porous chitosan membranes have been utilized as adsorptive membrane for the removal of metal ions, organic macromolecules or bioseparation of protein mixtures. The removal or separation mechanism is not based on physical size retention but based on the high adsorption capability of chitosan to the target solutes. For this purpose, it is important that large macro or micro pores an...

Dialysis reactions with biocompatible membranes are rare, and complement activation has been suggested to be a culprit. We report here a case of an incident haemodialysis patient with asthma disease who experienced severe adverse reactions late into dialysis session, with different synthetic membranes (FX 80, Fresenius; Polyflux 17L, Gambro; FX 10, Fresenius; BLS 512, Bellco-Sorin). After repla...

Heavy metal pollution represents an urgent worldwide problem due to the increasing number of its sources; it derives both from industrial, e.g., mining, metallurgical, incineration, etc., and agricultural sources, pesticide fertilizer use. Features membrane technology are absence phase change or chemical additives, modularity easy scale-up, simplicity in concept operation, energy efficiency, sm...

Two recent studies published in Critical Care reported that plasma [1] and urinary [2] levels of neutrophil gelatinase-associated lipocalin (NGAL), an important biomarker for prediction and diagnosis of acute kidney injury, were not affected by continuous renal replacement therapy (CRRT). The investigators assessed NGAL elimination during continuous venovenous hemofiltration [1] and hemodiafilt...

Polymeric nanofbers, specifcally fabricated by electrospinning, offer viable means useful for a wide range of applications such as health, energy and environmental issues. However, among the mentioned sectors, desalination and water/wastewater treatment applications have been highlighted during the past decade. This article focuses on the present status and recent develo...

The choice of dialyzer may affect the dialysis process more than any other single component of the dialysis system. Over the past five decades, membranes used for the treatment of chronic kidney disease have continuously evolved, and the use of classical non-modified cellulose membranes has declined in favor of cellulose-based membranes in which the basic structure has been modified to improve ...

The shrinking water supply together with our continuously increasing demand for this resource has stimulated a renewed interest in reverse osmosis (RO) as a water treatment unit process. A wider use of RO membranes, however, is impeded by a group of phenomena that lead to permeate flux decline, deterioration of permeate water quality, shortening of membrane life, and thus to a substantial incre...

Selective extraction of a protein from a mixture can be accomplished using an adsorptive membrane and low displacement recuperative parametric pumping. Low displacement recuperative parametric pumping can lead to the preferential transport of an adsorbing solute and the rejection of nonadsorbing solutes by the adsorptive membrane. Using a protein mixture consisting of lysozyme and myoglobin, we...

In this work, molecular dynamics (MD) was performed to simulate the dynamic processes of 1:4 acetone/nitrogen permeating through different Al2O3 membranes by Materials Studio 2.2 software package. Three modeling systems were constructed applying different modeling box lengths as well as different hollow size and texture of Al2O3 membranes to compare different permeation behaviors. In each syste...