> One kilogramme of the new material generates enough drinking water to meet a household's daily need, and does not require any external power source
First the density of an aerogel is very low, so 1kg is like 50 liters (13 gallons). To absorb humidity from the air, it can't be a big cube. If we use a 1cm (1/2 inch) wide sheet, the size must be 5m^2 (54 feet^2). That slightly smaller than the size of a wall of a room, and you need also a good airflow and enough sunlight to provide the power.
Also it produces 17 litters (4.5gallons) per day. A typical family use 300 litters (80 gallons) per day. So it's enough water to drink, but not enough water to live.
And the 17 litters per day are measured in a humid environment. The details are not very clear, but in most humid environments it rains and you have some system to collect the water or extract it from a nearby river. The problem are the dry environments.
> One kilogramme of the new material generates enough drinking water to meet a household's daily need, and does not require any external power source
First the density of an aerogel is very low, so 1kg is like 50 liters (13 gallons). To absorb humidity from the air, it can't be a big cube. If we use a 1cm (1/2 inch) wide sheet, the size must be 5m^2 (54 feet^2). That slightly smaller than the size of a wall of a room, and you need also a good airflow and enough sunlight to provide the power.
Also it produces 17 litters (4.5gallons) per day. A typical family use 300 litters (80 gallons) per day. So it's enough water to drink, but not enough water to live.
And the 17 litters per day are measured in a humid environment. The details are not very clear, but in most humid environments it rains and you have some system to collect the water or extract it from a nearby river. The problem are the dry environments.