Here’s a back-up, science paper on MOF from Nature with measured numbers. 8 liters per KG per day isn’t 1000 gallons until you get to 2 tons … but it’s about 200 liters per out of 25 KG … easily carried.

www.nature.com/articles/s41598-020-58405-9

"The effects of temperature, relative humidity, and powder bed thickness on the adsorption-desorption process are explored for achieving optimal operational parameters. We found that Zr-MOF-808 can produce up to 8.66 LH2O kg−1MOF day−1, an extraordinary finding that outperforms any previously reported values for MOF-based systems… "