[nicktelford]

Stated in the article. It's dried using a heat pump.

[SpaceNoodled]

It's not quite clear where the water goes.

[jjoonathan]

The desiccant pumps water out of the hot humid daytime air and pumps it into the cool humid nighttime air.

[tekla]

The same place the water goes now

[hasbot]

I have a desiccant based dehumidifier and the water just drips into a pan the same as any dehumidifier.

[plus]

Presumably into the (outside) air.