MembraneTechnology can reduce D2O energy cost

  • I always wondered why the cost of D20 was so high

    the energy production cost is ~ 2000 US/kg..

    graphene membrane technology can reduce that cost by a factor of 10 at least

    "The most utilized technologies today are the Girdler-Sulfide (GS) and monothermal-NH3/H2 processes1

    (see also Heavy Water Board of India).

    They are characterized by ⍺ 1.3 and 6, respectively, and both require E 30 GJ kg-1.

    Our electrochemical pumping exhibits (E,⍺) = (20 GJ kg-1, 8), outperforming all the other technologies.

    Moreover, the above estimate for E was rather conservative, so we believe that the energy costs

    can be reduced by at least an order of magnitude by a number of design changes.

    For example, the operating temperature can be increased to 60 ℃,

    which would result in an exponential increase in graphene’s proton conductivity;

    by a factor of 10 as proven in previous experiments10,12.

    A more recent report indicates that an H/D separation factor of 25 can easily be achieved with graphene..

    which should reduce costs further..

    " By mass spectroscopic analysis, we demonstrate significant bias voltage dependence of the H/D separation

    factor with a maximum of ∼25 at 0.15 V and room temperature, which is superior to those of conventional separation methods.

  • RobertBryant

    Changed the title of the thread from “MembraneTechnology can reduce D2O energy cost by” to “MembraneTechnology can reduce D2O energy cost”.