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University of Surrey has a strong legacy of research into membrane separation and osmosis, culminating the commercialisation of Surrey's spin-out company Modern Water plc. Modern Water plc. was floated on AIM (London Stock Exchange) in June 2007 raising £30m cash with a market value of £70m.
The research itself is having direct impact via the operating desalination plants in Gibraltar and Oman producing high quality drinking water typically using 30% less energy than conventional desalination plants. In Oman, because of the poor quality of the feed water the forward osmosis process uses 42% less energy per litre of water produced when compared to convential equipment. The two plants currently operating in Oman serve 600 people in Al-Khuluf and 800 people in Naghdah.
Research at the Department of Engineering Science has led to step changes in the way industrial membrane filtration plants are designed and operated . Based on some key research results that have successfully tackled membrane fouling problems, the work has triggered rapid uptake of membrane-based technologies that are more energy-efficient than traditional processes. Water companies are among those achieving both economic and the environmental benefits, and the research has played a key role in the membrane bioreactor (MBR) market, which is now growing at over 10% a year, and in the global desalination market which exceeds US$19 billion, according to GMR Data (2012) [13].
Organic solvent nanofiltration (OSN) is a membrane separation technology used for separating molecules present in organic solvents. Research in the Livingston group has resulted in the creation of membranes with exceptional stability in organic solvents, coupled to high flux and excellent rejection performance. These membranes have been developed through to commercial products, and are manufactured by Evonik MET Ltd in the UK in a purpose-built facility in West London.
For many separations OSN uses ten times less energy than thermal methods, and can process molecules at low temperature. Through Evonik MET, OSN membranes and test equipment derived from the Imperial research have been supplied to over 100 customers including many of the major global chemical and pharmaceutical companies. For his work on OSN, Andrew Livingston received the 2009 Silver Medal of the Royal Academy of Engineering awarded "...to recognize an outstanding and demonstrated personal contribution to British engineering, which has resulted in successful market exploitation..." [7]
Fifteen years of ceramic membrane research at Robert Gordon University and the applied development programme by the RGU spinout Gas2 Ltd have culminated in the development of the Gas2 pMR™ CPOX process and its new GTL reactor. This technology has captured the attention of major global energy investment company Lime Rock Partners for possible onshore and offshore deployment addressing the monetisation of stranded gas and to avoid flaring and venting of unwanted associated gas. The economic impact is £17.2 million in equity investment during 2008- 2013 with concomitant impacts of new processes and employment opportunities at Gas2, with environmental impact for the oil & gas industry from eco-friendly handling of stranded natural gas.
This Case Study illustrates how research has had a significant impact on the awareness and management of hydrogen hazards across the UK's pre-eminent nuclear decommissioning and reprocessing organisation, Sellafield Ltd (formerly BNFL). It has enabled Sellafield to:
In addition, LSBU has, since 2008, benefited from contract research from Sellafield valued at over £1 million.
By modelling the formation of micro-bubbles and the flows induced by them, researchers at the University of Cambridge Department of Applied Mathematics and Theoretical Physics developed a new, low-cost nozzle design that could be retrofitted to existing Dissolved Air Flotation (DAF) systems. This new design dramatically improved the performance of DAF systems, used by the water industry for the production of drinking water. Specifically, this research has enabled a substantial increase in throughput and effectiveness of the flotation process, whilst simultaneously providing a dramatic decrease in the energy requirement.
Researchers at Swansea University were the first in the world to apply Atomic Force Microscopy (AFM) to membrane separation in the field of process engineering. Membrane optimisation processes have emerged as one of the most significant recent developments in chemical engineering, with a range of applications in, for example, the food industry and medicine/therapeutics. Research undertaken by the University has led to significant commercial and health benefits, including