Ultrafiltration

To produce healthy drinking water is the main problem almost all over the world. The aim of this study is to find an efficient method to remove humic substances (HS) from water, because HS cause some types of cancer when they react with chlorine or other disinfection materials composing disinfection

The objective of this study was to investigate the influence of MWCO, pressure, SDS concentration, salt amount and temperature on surfactant removal and permeate flux. Intersep Nadir membranes made from polyethersulphone (PES) and polysulphone (PS) were used. With the addition of a mineral salt to t

Studies were performed to determine the effect of the presence of powdered activated carbon (PAC) on ultrafiltration (UF) process performance. The influence of PAC addition to the feed on permeate flux in terms of flux decline and the possibilities of membrane cleaning during backwashing were invest

In this paper, performance of different pretreatment systems used in the seawater reverse osmosis desalination process is presented. The different pretreatment techniques analyzed included conventional media-filtration technique and non-conventional membrane filtration techniques. For the membrane f

The high amino acid content (lysine, meteonin and tryptofan) of most leaf proteins makes them suitable as supplements for cereal flours, which are deficient in these amino acids. These proteins are used in cattle balanced foods. In this work, separative membrane technology, ultrafiltration (UF) and

This paper reviews three ways in which existing brackish water reverse osmosis (BWRO) desalination plants can be modified to increase overall water recovery from the 70–75% range to the 90–95% range. The three techniques used to increase plant recovery are: (i) seawater reverse osmosis (SWRO) for wa

This study aims to find news a die of purification for a wastewater reuse. Primary effluent contains organic mineral, dissolved and suspended matter (colloids). Microfiltration or ultrafiltration is adequate for producing disinfected clear water suited for different applications. However, direct fil

This work reports an ongoing AWWARF research project on integrity testing of low-pressure membrane processes. The project includes an evaluation of existing and improved methods through testing at full-scale plants representing different membrane systems. The assessment and advancement of integrity

Six different globular proteins were filtered with hydrophilic regenerated cellulose ultrafiltration membranes at their isoelectric points. The PLS regression was used to analyse the filtration data. The modelling of the relative flux failed, but that of the transmission of the proteins succeeded re

This work investigated the difference between membrane cut-offs measured with the CHARMME methods and the values quoted from the manufacturers. Four different membranes were characterised. The two regenerated cellulose membranes that according to the manufacturers had cut-offs of 5 and 10 kD had, in