Standards Go to https://brilliant.org/Undecided you can sign up for free. Could you discuss where G2O is currently in development, i.e. Dr. Miao - As a functional coating, graphene oxide plays a role of changing surface properties, especially underwater oleophobicity and/or low oil adhesion in water. Disclaimer: AAAS and EurekAlert! scipak@aaas.org Our first tests showed that H2 (kinetic diameter: 0.289 nm) can go through but CO2 (0.33 nm) can’t, which suggested that we may use it for highly selective water (0.26 nm) permeation. Water desalination and purification is an attractive pathway to fresh water because seawater represents the largest fraction of water on Earth (1, 2).An ideal water-treatment membrane should exhibit several critical characteristics: (i) minimal thinness to maximize permeance (3, 4); (ii) sufficient mechanical strength to avoid breakage and solute leakage (5–7); and (iii) uniform and … Thin-Film Graphene Nanocomposite to Improve Desalination … December 12, 2019 A more efficient way to turn saltwater into drinking water by Anna Boyle, Carnegie Mellon University Mechanical Engineering A conductive metal-organic framework (MOF) is … The truth about graphene. … Our initial target market is oil/water separation and wastewater where we were recently awarded $1m from Innovate UK to develop smart filters for the nuclear industry while we complete work on desalination. 202-326-6440 Our current goal is to develop scalable processes to prepare graphene-based membranes for separation applications while our longer-term goal is to prepare membranes for high flux desalination. A team of researchers from China, the U.S. and Japan has developed a way to strengthen graphene-based membranes intended for use in desalination projects—by fortifying them with nanotubes. The three keys to just about every membrane’s effectiveness is a precise control over pore sizes, being highly resistant to fouling and an ability to reduce energy costs. What sort of potential implications did you recognize for the technology at that time? Dr. Miao - The R&D element of the technology is largely behind us and we are concentrating on optimizing our coating for specific membrane types and specific applications. Nanoporous 2D graphene membranes are well suited for this purpose and have experimentally demonstrated exceptionally fast and efficient desalination. is a service of the American Association for the Advancement of Science. On the G2O website, it says that the graphene oxide process you have developed can act "as a a functional coating for modifying the surface properties of existing filter media”. (2019, July 16). Then we tried to use graphene oxide as a skin layer/coating on porous filters and found that it produced excellent antifouling performance in oil/water separation due to the high hydrophilicity and the optimized nanostructure that traps water and repels oil. While the team’s long-term goal is to use graphene filters in desalination plants to make seawater drinkable, Prof. Nair acknowledges this could be … Congratulations to you and the whole team for such a nice organization"-"Congratulation for the great job of organizing a fully virtual conference. The Bio Graphene produced will meet the demanding competitive prices required especially for applications in the high volume applications in concrete, asphalt and rubber tires. Simple, solar-powered water desalination. Prev Next. While a fair amount of graphene research is now centered around improving manufacturing techniques—and deservedly so—we are still at the point at which an equal amount of research is dedicated to just finding out all its properties. Nanoporous graphene for desalination. Our lab work has demonstrated that the coating of ultrafiltration (UF) membranes with the G2O technology allows rejection of a high proportion of multivalent ions such as Mg2+ and Ca2+ and further development will allow us to create high flux / high recovery rate RO systems with excellent rejection of monovalent ions.  @AAAS, Copyright © 2021 by the American Association for the Advancement of Science (AAAS), University of Science and Technology of China. Abstract Graphene-based laminar membranes open new avenues for water treatment; in particular, reduced graphene oxide (rGO) membranes with high stability in aqueous solutions are gaining increased attention for desalination. Graphene 2019 – June 25-28 (Rome, Italy) The 9th edition of Graphene Conference series, the largest European Event in Graphene and 2D Materials, will be organized in Rome (Italy): June 25-28, 2019. For single-layered graphene-based membranes with selective defects for high flux water permeation, there will still be a long way to go before large scale adoption. (The Graphene Council, 2019) According to Stetson, seawater in graphene membrane would require pressure of approximately 28 bar (400lb per square inch), which equals half to a third the amount pressure required for other plants. Graphene-based membranes are also attractive for desalination purposes due to their chemical and physical stability, concentration polarization and fouling. We are working on depositing graphene oxide functional coatings with optimized nanostructures on porous filters by facile and scalable processes for water purification, especially for antifouling oil/water separation. +1 202 294 5563 Could you provide a broader context of how this technology could impact issues such as water shortages and reducing costs associated with desalinating water? However, the low water permeability of these membranes significantly limits their applications. We provide the most comprehensive and up-to-date information and resources on graphene materials, suppliers, applications, patents, standards and research, world-wide.