Extending Reverse Osmosis Membrane Lifespan: Real-Time Integrity and Functionality Assessment and Sustainable Approaches for End-of-Life Management

This research project proposes innovative solutions to extend the lifespan of Reverse Osmosis (RO) membranes, aiming to improve their sustainability and operational efficiency. This initiative is achieved by focusing on two key aspects: developing predictive and real-time monitoring tools to enhance the membrane’s first lifecycle and introducing multiple life cycles through sustainable end-of-life (EoL) management strategies. The first phase involves comprehensive investigations on the functionality, integrity, and failure evolution of thin film composite (TFC) RO membranes, utilizing advanced analytical techniques, multiaxial mechanical testing, and controlled testing environments resembling real-life conditions. Additionally, Physics-informed Neural Networks (PINNs) and Electromechanical Impedance (EMI) will be utilized to develop predictive and real-time monitoring tools to enhance the accuracy of performance analysis and optimize operations. The second phase aims at introducing multiple life cycles of RO membranes beyond their initially intended use through sustainable end-of-life (EoL) management strategies. Our approach is to engineer an innovative in-situ transformation process for EoL membranes through surface modification techniques, thereby enabling their reuse in lower-grade applications such as ultrafiltration and nanofiltration. This will be accomplished through lab-scale and in-situ (pilot-scale) transformation experiments, which involve investigating different pre-treatment methods, novel eco-friendly and cost-effective coating materials, performance evaluation of the transformed membranes, optimization of transformation parameters, scalability assessment of transformation methods, and the development of a comprehensive management plan of EoL membranes. This proposed research is transformative and novel, addressing both operational and EoL aspects of RO membranes. The integration of advanced analytical and testing tools with data-driven and machine learning tools promises a step change in the prediction and real-time monitoring of membrane performance. Moreover, the focus on eco-friendly in-situ transformation strategies for EoL membranes introduces a pioneering concept that paves the way for multiple service life cycles for RO membranes and shifting from conventional disposal methods towards more sustainable approaches. The impact of this project extends beyond scientific advancement and could be transformative, benefiting from the collaboration with Marafeq Qatar (see miscellaneous documents), setting new benchmarks for membrane technology in terms of efficiency, lifespan, and sustainability, particularly in water-scarce regions, such as Qatar. It aligns with the Qatar National Vision 2030 and RDI national priorities, promoting environmental and resource sustainability and transition towards a circular economy. Furthermore, this project provides a platform for educating future scientists and promoting a culture of sustainability.

Hamad Bin Khalifa University (HBKU)