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Home > News > Nanoporous Graphene Promises Affordable Water Desalination

July 3rd, 2012

Nanoporous Graphene Promises Affordable Water Desalination

Abstract:
For some parts of the world desalination of seawater is an important option for accessing fresh drinking water. In 2007 the estimates were that worldwide desalination reached 30 billion liters a day. But the cost of that desalination was at the exorbitant levels of $0.50 to $0.85 per cubic meter.

Because of this huge expense, most desalination production remains in the oil-producing countries of the Persian Gulf, where they can afford the huge energy costs of running the multi-stage flash (MSF) processes. But outside of the Middle East, the predominant method for desalination is Reverse Osmosis (RO), which is only slightly less energy consuming and expensive than MSF processes.

Rresearchers at MIT are looking to replace the membrane materials used now in RO with nanoporous graphene.

Source:
spectrum.ieee.org

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