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HomeWorldNYUAD researchers develop self-cleaning membranes boosting desalination efficiency - World News Network

NYUAD researchers develop self-cleaning membranes boosting desalination efficiency – World News Network

Abu Dhabi [UAE], September 21 (ANI/WAM): A team of NYU Abu Dhabi (NYUAD) researchers has developed a new kind of self-cleaning, hybrid membrane that provides a solution that overcomes significant challenges that have, until now, limited desalination technologies.
The most energy-efficient desalination technologies are based on membrane desalination. However, the membranes used for desalination are prone to fouling, the accumulation of scale that results in decreased membrane performance, shorter lifespan, and the need for chemical cleaning, which has unknown environmental consequences.
Researchers at NYUAD’s Smart Materials Lab and the Centre for Smart Engineering Materials, led by Professor Panče Naumov and Research Scientist Ejaz Ahmed, together with their collaborators from the Institute for Membrane Technology in Italy, created a unique hybrid membrane by utilising stimuli-responsive materials, thermosalient organic crystals, embedded in polymers. Thermosalient crystals are a new class of dynamic materials that are capable of sudden expansion or motion upon heating or cooling.
Combining these microcrystals with traditional, porous membranes, the researchers developed a “smart” membrane capable of deformation by self-modulating its pore size and surface properties in response to changes in temperature. The crystals on the surface of the membrane respond to a short-term increase in temperature, which activates the membrane to effectively remove the deposited contaminants from its surface. The researchers found that this “gating” process increased the flow of desalinated water by more than 43 percent through osmotic distillation and significantly extended the membrane’s operational lifetime.
The findings are presented in a paper titled Smart Dynamic Hybrid Membranes with Self-Cleaning Capability, published in the journal Nature Communications.
The ability of hybrid membranes to self-clean and minimise fouling could make desalination technologies more efficient and could increase the availability of freshwater. More than a third of the world’s population currently suffers from shortages of drinkable water, a number expected to reach 50 percent by 2025. In water-deficient countries, such as those in arid regions like the MENA region, membrane desalination of seawater helps coastal communities address local deficiencies.
“There is an urgent need for energy-efficient membranes capable of water desalination and other separation technologies that eliminate fouling issues without utilising harsh chemicals as cleaners,” said Naumov. “The hybrid membrane we have developed demonstrates favourable consistency in performance after several cycles of descaling. With more than twenty types of dynamic organic crystals available to use with different membrane compositions, our novel approach represents an important step forward towards the development of a new generation of “smart” membranes that will be capable of self-cleaning in an energy-saving and environmentally benign manner, which will effectively improve the cost-effectiveness of the overall process of potable water production.”
This research is being carried out in the same period that NYUAD is chairing the Universities Climate Network (UCN). Comprising UAE-based universities and higher education institutions, the UCN collaborates on facilitating dialogues, workshops, public events, policy briefs, and youth participation in the lead-up to and beyond COP28. (ANI/WAM)


Disclaimer: This story is auto-generated from a syndicated feed of ANI; only the image & headline may have been reworked by News Services Division of World News Network Inc Ltd and Palghar News and Pune News and World News


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