Singapore just solved the water problem huh ?
They still need to test how much water can be extracted in dry climates, but that 95% conversion ration for humid climates is very promising.
1kg to produce 17lt? That much quantity must have tremendous volume size...
That could be something like 17 000 cm³ of water from 50 000 cm³ of aerogel. Its typical density is so low that weighing it barely makes sense; some types are even lighter than air.