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Research: Graphene Reduces Corrosion in Wastewater

Wednesday, November 28, 2018

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Researchers based out of the University of New South Wales, Sydney, working in collaboration with Sewer Venting and Crane Hire Services, are investigating the potential of graphene oxide that can control moisture in Australian sewer systems.

Work on the experiments is being led by the graphene team of UNSW’s School of Materials Science and Engineering. The graphene oxide material was developed by a team led by Rakesh Joshi.

Graphene Oxide

According to the researchers, the ability to manipulate the spaces between the layers of graphene oxide allows for the development of customized desiccants that can control moisture across a variety of applications. The new desiccant can also shed moisture at low temperatures, allowing for easy reuse.

University of New South Wales, Sydney

Researchers based out of the University of New South Wales, Sydney, working in collaboration with Sewer Venting and Crane Hire Services, are investigating the potential of graphene oxide that can control moisture in Australian sewer systems.

The heating customarily required to regenerate conventional desiccants is often seen as prohibitively expensive.

“This combination of high adsorption capacity and a rapid rate of adsorption can significantly increase the efficiency of any desiccant system,” said Joshi. “Likewise, the relatively low temperatures at which discharge can be achieved offers significant advantages by greatly reducing the energy intensity required for regeneration.”

Duncan Reynolds, Research and Development Manager for SVSR, noted that the goal of the research was to develop Australian-made materials that could be retrofitted to existing wastewater infrastructure in New South Wales.

“The bonus is that if we reduce nuisance [odors], we will also reduce corrosion throughout the network, which reduces costs for utilities trying to manage ageing concrete sewer networks,” Reynolds said, going on to note that odor control media is currently not reused due to cost.

The project is slated to run until July 2019.

   

Tagged categories: Australia; Corrosion protection; Graphene; Infrastructure; OC; Program/Project Management; Research and development; Wastewater Plants

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