Ultrafiltration

Ultrafiltration (UF) of gelatin liquor from marine source (tuna skins) has been performed on a tubular mineral membrane of cut-off 10,000 Da. An attempt was made to concentrate the fish gelatin as well as to purify it by means of the diafiltration technique (DF). Primary experiments were devoted to

The effects of pH and ionic strength (salt concentration) on transmission of single protein human serum albumin (HSA) and human immunoglobulins (HIgG) through a 100 kDa molecular weight cut-off (MWCO) polyethersulfone membrane have been studied using a pulsed sample injection technique. Experimental

A process for recovery heavy metals — Cu(II), Ni(II), Pb(II) and Cd(II) — from industrial wastewaters has been studied. This process is called PSU (Polymer Supported Ultrafiltration), and includes complexation of metallic ions with polymers (polyethyleneimine — PEI, or poly(acrylic) acid — PAA), in

A process for metals removal from totally chlorine free (TCF) wastewater using water-soluble polymeric ligands (WSPL) in combination with ultrafiltration is described. The polymeric ligands addition, contact time between the polymeric ligands and the wastewater, and pH were evaluated. The UF experim

The study has been aimed at finding out the specific features in purification of the water contaminated by Co(II) and Ni(II) ions by use of ultrafiltration in combination with chelation. Within an operating pressure range of 200 to 500 kPa, the maximum retention coefficient of Co(II) and Ni(II) ions

Membrane biosorption is a new integrated process for xenobiotics removal from a water environment. The mathematical model has been presented in the paper based on biosorption equilibrium and kinetics as well as relevant mass balances of the integrated system. To achieve steady-state conditions the b

Membrane permeation combined with complexation was tested for radioactive wastes processing purpose. The ceramic membranes MEMBRALOX® and CéRAM INSIDE® were used. To enhance the UF separation effect, different soluble polymers and ferrocyanides, binding cobalt and caesium ions were used. The complex

Water in many areas of Australia is scarce and of poor quality. In some areas high levels of treatment are required either due to contamination of waters or due to high salinity. Nanofiltration (NF) and low-pressure reverse osmosis membranes are well-recognized technologies to treat waters of qualit

The use of diafiltration is now the state-of-the-art in the food and beverage, biotech and pharmaceutical industry. In this paper, the advantages and disadvantages of the most common process modes of diafiltration, batch and continuous, are discussed. Further, the new concept of counter-current diaf

High-performance tangential flow filtration (HPTFF) is a new technology for protein and nucleotide purification. Conventional ultrafiltration (UF) is limited to separation of solutes that differ by tenfold in size. HPTFF is a twodimensional purification method that exploits differences in both size