[Trentamj]

"Does it filter out salt from salt water?" Based on what I read, grapheme potentially can remove salt from water in ONE step, which would be a MUCH less expensive process than distillation (which requires a significant energy input to both heat and cool the H2O). The trick is twofold:

1) Some development is required to scale up the grapheme-based salt-removal process, and:

2) The already-existing proponents of the distillation-based salt-removal process are not just going to flake off and disappear with barely a whimper (if you catch my drift).

[Bratch]

Based on what I read, grapheme potentially can remove salt from water in ONE step, which would be a MUCH less expensive process than distillation (which requires a significant energy input to both heat and cool the H2O).

California will outlaw it long before it reaches that point.