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DuPont Water Solutions And Waterise Collaborate Toward Sustainable Subsea Desalination Subsea Process, which Reduces Energy Requirements of Desalination by 40 percent, Requires Durable, Long-Lasting Membranes Wilmington, DE (PRWEB) - DuPont (NYSE:DD) today announced that it has entered into a collaboration with Waterise to provide seawater reverse osmosis membranes and expertise to the company’s subsea desalination plants. Subsea reverse osmosis (RO) desalination presents a sustainable and more economical new way to turn seawater to freshwater. As subsea desalination leverages the natural hydrostatic pressure found at the depths of the sea to run the reverse osmosis, it reduces the energy requirements of conventional RO desalination by 40 percent. It also requires 80 percent less coastal land than land-based plants, presenting a viable option for communities with limited space. From an environmental perspective, subsea desalination requires lower amounts of pretreatm ....