Resumen
In this work, the ability of a commercial spiral-wound nanofiltration membrane to remove hardness and ions from diluted seawater was studied. Experiments were carried out in the pressure range of 4?10 bar. Analyses of the samples, and permeates at different pressures, were performed and the effects of the trans-membrane pressure on the permeate flux were investigated. The results show that this nanofiltration membrane is capable of retaining 96?98% of the total hardness, 79?89% of the electrical conductivity and 79?89% of the total dissolved solid (TDS). Our results are in good agreement with those reported by the manufacturing company.