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. An ideal material for removing salt from seawater to create potable freshwater should be thin, strong enough to withstand extended use and contain uniformly sized and distributed pores for efficient ion separation. Nanoporous graphene for desalination. is a service of the American Association for the Advancement of Science. Science Press Package Team "The study brings the membrane area from micrometer-scale to centimeter-scale, which is large enough to be tested in a bench-scale membrane system, representing a major milestone in scaling up nanoporous graphene membranes," writes Baoxia Mi in a related Perspective. When did you have your “eureka moment” and realize that you had discovered a unique approach to using graphene oxide in membrane filters? So this means that the coating process can be applied to any membrane technology currently out in the market, correct? In the related Perspective, Mi notes that despite the "intriguing work" by this team, the technology still has a way to go before it can be implemented in real-world desalination systems. We took the opportunity to interview the man responsible for developing the technology behind this graphene-based membrane, Dr. Miao Yu, Assistant Professor of Chemical Engineering at the University of South Carolina, to get some insights of how this technology is different from other graphene-based membranes and what we can expect to see from this new company in the future. Go to https://brilliant.org/Undecided you can sign up for free. developed an atomically thin graphene nanomesh (GNM) reinforced by an interwoven network of single-walled carbon nanotubes (SWNT). Site Search, 208 King Street 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. Professional Services, Industry Reports & Surveys A very interesting and stimulating conference. Graphene holds promise for water filtration, but the technology is far from ready for use in large-scale desalination. Graphene is fascinating stuff with promise for use in a seeming endless number of applications. EurekAlert! Here, Yanbing Yang and colleagues present a method for fabricating graphene membranes that overcome these limitations. This involves optimizing the coatings, quantifying the performance improvements on commercially available membranes and then working with the manufacturers to integrate our technology into their mass production process. Because of this, the use of ultrathin graphene nanomesh materials has been limited to proof-of-concept demonstrations using micrometer-scale flakes. Artwork: Graphene-based membranes hold huge promise in desalination A UK-based team of researchers has created a graphene-based sieve capable of … Graphene Technology Journal Disclaimer: AAAS and EurekAlert! scipak@aaas.org 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. 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 … Dr. Miao Yu, Assistant Professor of Chemical Engineering at the University of South Carolina, Trilayer Interlinked Graphene Oxide Membrane for Wearable Hemodialyzer, UW Researchers Turn Coal Powder into Graphite in Microwave Oven, Physicists observe competition between magnetic orders, Versarien plc Appointment of Chief Technology Officer, Putty-like composites of gallium metal with potential for real-world application, Tirupati Graphite PLC Vatomina Graphite Project Update, Madagascar, ZEN Graphene Solutions Provides Update on Cytotoxicity Testing of Graphene-Based Compound and Effectiveness of Graphene-Based Coating, Progress on Hydrogen Generation and Graphene-Based Battery Materials, New discovery brings analogue spintronic devices closer, Cuspis Capital Ltd. & GMG Announce Signing of Acquisition Agreement for Qualifying Transaction, Acquisition of Versarien plc CVD Assets and IP from Hanwha Aerospace Lanstead Subscription and Additional Sharing Agreement, ZEN Graphene Solutions Develops Novel Graphene-Based Potential Treatment for Bacterial and Viral Infections in Humans, Researchers invent method to 'sketch' quantum devices with focused electrons, STEK NEX: window films with game-changing graphene cooling technology. Kim Small, pp. 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. We show that nanometer-scale pores in single-layer freestanding graphene can effectively filter NaCl salt from water. An interview with the scientist behind a new company that is commercializing a graphene-based membrane filter technology that will make water desalination more affordable. The upcoming calendar is currently empty. Implications of Chemical Reduction Using Hydriodic Acid on the Antimicrobial Properties of Graphene Oxide and Reduced Graphene Oxide Membranes A.B. 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 … Dr. Miao - We would not go as far as to claim the 99.9% energy savings that some have made, but the G2O technology should significantly decrease the cost of water for large desalination plants. Park, J.S. Please use one of the following formats to cite this article in your essay, paper or report: APA. Simple, solar-powered water desalination. Could you discuss where G2O is currently in development, i.e. 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. provides eligible reporters with free access to embargoed and breaking news releases. 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. Nanoporous 2D graphene membranes are well suited for this purpose and have experimentally demonstrated exceptionally fast and efficient desalination. According to tests of the material, the new graphene hybrid membrane shows high water permeance and salt separation performance at previously unattainable scales. Graphene Videos 1901023, (2019) 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. Desalination is fast becoming a public health priority. Graphynes, graphene analogs yet containing intrinsic uniformly distributed pores, are excellent candidates for highly permeable and select … Selective transport of mass through membranes, so-called separation, is fundamental to many industrial applications, e.g., water desalination and gas separation. What sort of potential implications did you recognize for the technology at that time? Could you discuss how your graphene oxide technology addresses these three criteria? EurekAlert! Dr. Miao - We have tested GO coatings on a variety of porous substrates for oil/water separation, including Anodic Aluminium Oxide (AAO), Polyvinylidene Fluoride (PVDF), Polysulfone (PS), Cellulose Nitrate (CN), Cellulose Acetate (CA) and Polyamide (PA), and found greatly improved antifouling performance, combined with increased water flux. 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. 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. Since this is a low-cost and simple coating process, we realized it must have large applications in oil/water purification to prolong membrane service times and lower operational costs. (The Economist, 2013). 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. New Bern, NC 28560, USA 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 … offers eligible public information officers paid access to a reliable news release distribution service. are not responsible for the accuracy of news releases posted to EurekAlert! Further testing of the material shows its highly efficient desalination capabilities. Pressure-driven flows are induced by the motion of specular reflection boundaries with a constant speed, resulting in a … Dr. Miao - Our coating acts as an enhancer to existing membranes rather than replacing them. The SWNTs physically partition the GNM material to form a structural framework - not unlike the Voronoi-like cells of a dragonfly wing - which provides mechanical stability at centimeter scales. Standards Read full story ... A graphene roll-out. But that was just in computer models, engineering a filter medium is a different story. As a lamellar structure of graphene oxide, interlayer spacing controls the final pore size and the functional groups on graphene oxide determines surface properties for selective permeation of certain molecules, such as water. GraphAudio was established in 2016 to commercialize graphene-based acoustic products based on technology that originated from UC Berkeley and Berkeley Lab. Dr. Miao - There are at least three ways of utilizing graphene-based material for membrane applications: i) create functional coatings, ii) create lamellar structures with nano-channels, and iii) allow selective permeation through structural defects of single-layer graphene or graphene oxide. By adding the G2O coating, water transport through the membranes is significantly increased which makes the use of membranes either cheaper in terms of energy input or allows the use of membranes in applications where their current limitations would make them uneconomic. Prev Next. 202-326-6440 Furthermore, the network of SWNT blocks the spread of cracks or tears in the graphene, effectively constraining any damage to a small area. The Graphene Council is the leading source for graphene research and commercial application news and intelligence. 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