Humic substances

Nanofiltration (NF) membranes retention depends on charge repulsion and size exclusion, combining the properties of ultrafiltration and reverse osmosis membranes. The molecular weight cut-off of two NF membranes was determined using cross-flow filtration of different molecular weights of non-ionized

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

In this study the removal of humic substances from model-solution and well-water using four different ultrafiltration membranes has been investigated. The permeates were analysed by UV254nm absorbance, TOC and DOC measurements. Based on our experiments it can be established that the examined membran

• T he investigations substantiated the thesis that t he hydrophilicity of the membranes noticea bly affects the efficiency of treating water p olluted with natural organic matter by u ltrafiltration. • S trongly hydrophilic membranes (made of r egenerated cellulose) displayed a high p ermeability a