Comment by westurner

It is also possible to make water filters and air filters out of graphene layers with one or more pore sizes.

The pore size of graphene can be varied parametrically.

Water filters and air filters and superconducting electronic computers can be made by stacking layers of graphene.

Some products made out of graphene are compostable. Other forms of carbon are considered soil amendments.

Does or would passive distillation allow some of the waste sediment to settle?

Graphene can be added to concrete to make it stronger.

Could the graphene in water from next generation graphene-based semiconductor and superconductor production be used as a concrete additive?