Last website update: 05-01-2018


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New scientific paper related to LIFE TRANSFOMEM Project

Over the 65% of the installed desalination capacity is related on reverse osmosis (RO) membrane technology. However, membranes have to be replaced when fouling effect is irreversible. In fact, it is estimated that > 840,000 end-of-life RO membranes modules are discarded annually at worldwide scale, mostly in landfills.

In this study, end-of-life RO membranes were recycled at pilot scale by using concentrated solutions of free chlorine. Chemical attack enables the removal of polyamide layer partially or totally, obtaining nanofiltration (NF) and ultrafiltration (UF) membranes, respectively. 5 diverse end-of-life models were tested. Recycled membrane performance (permeability and rejection coefficients) was identified by filtering natural brackish water (BW). Further, validation test were conducted in order to analyze the recycled membrane stability by filtering BW long-term at Cuevas del Almanzora Desalination plant. For this purpose, two real pressure vessels with the capacity of hosting 6 membranes each were adapted. Recycled membranes did not show performance decline after 4 month of filtration. Promising results have been observed. Recycled seawater membranes with properties between RO and NF were validated as potentially fusible membranes. Recycled BW membranes, with high sulphate ion selectivity, were evaluated as a potential alternative of the current NF commercial membranes.

See the full paper at the following link


ESAMUR promote Life-Transfomem project

Look at the project progress trought this new published at ESAMUR workshop on 16th November


Life-Transfomem achieve its first patent

Patent conceded!!

19th October was conceded the patent related to "Transformation of spiral wound polyamide membranes after its industrial lifespan, into membranes with industrial utility". Spanish Patent P201630931. Recycling end-of-life reverse osmosis membranes to be reused in nanofiltration and ultrafiltration processes  is possible. However, although the recycling process is "relative easy going", there are several factors that have to be considered to achieve the success of the process.

This patent is the outcome of the synergy between IMDEA Agua, Valoriza Agua and Sadyt within the life-Transfomem european project. Congratulations to the inventors and all people that have collaborated in some way. Specially thanks to Cuevas del Almanzora desalination plant staff (Diego Martínez, José Manuel Caparrós and Jesús Durán).

Click here to show the patent: