Ultrafiltration

A mass transfer coefficient determination method, based on the velocity variation method, is developed for pressure-driven membrane modules with large membrane area and high recovery rates. The method was used to measure mass transfer coefficients in the nanofiltration spiral-wound module Filmtec NF

In this paper, the effect of operation parameters of microfiltration (MF) and ultrafiltration (UF) processes on the performance of purification and de-colorization of raw juice have been studied. Experiments were carried out using the pilot plant MF/UF membrane system equipped to a tubular module wi

T he application o f a combined UF and RO t reatment for the reuse o f spent filter backwash f rom treated swimming pool water is a suitable a nd environmentally friendly method for the r euse of water in swimming pools. Based on a f ull-scale study, membrane performance and the e ffects o f SFBW re

We considered the treatment of secondary effluent by coagulation–adsorption coupled with ultrafiltration. Tests were performed on the secondary effluent of the wastewater treatment plant at Staoueli (Algeria) where the average chemical oxygen demand (COD) was 46 (mg O2/L) and turbidity, 16 NTU. The

The effect of solute size relative to membrane pore size on the critical flux during the ultrafiltration of protein solutions was investigated using the constant pressure method. Hydrophilic regenerated cellulose membranes with a cut-off of 10, 30 and 100 kg mol!1, model proteins and skimmed milk so

Textile effluents usually contain high concentrations of inorganics as well as organics, and are therefore difficult to treat. Membrane processes can be used for many of these wastewaters in the textile industry. Two typical examples are discussed: (1) the use of nanofiltration for the treatment of

The wastewaters generated by the cuttlefish processing contain a high organic (COD of 20,000–35,000 mg.L−1) and inorganic (TDS of 30–40 g.L−1) load. These seafood effluents were subjected to treatment with cellulose acetate (CA) membranes synthesised according to the phase inversion process. Two pre

Cross-flow microfiltration alone or associated with ultrafiltration or coagulation was conducted to investigate the efficiency of this process in the reducing of chemical oxygen demand (COD) and proteins (Npr) in the waste waters produced from cuttlefish conditioning and freezing process. The study

This study explains the role of coagulation in membrane filtration of wastewater for reuse. For this purpose, a coagulation–ultrafiltration (UF) membrane system was used to treat secondary effluent from a nearby wastewater treatment plant using a rotating biological contactor. The study proceeded wi

Concentration and purification of lignosulphonates (LS) present in spent sulfite liquor (SSL) obtained from the paper industry were carried out through ultrafiltration (UF). The salts of lignosulphonic acid, a product of acid hydrolysis of lignin, are a major component of technical LS. In respect of