A dose of 2.8 kJ /cm^2 is 28 MJ /m^2, so a 100W-luminous-power blue LED would decontaminate 10 square meters (a small room) in 280,000,000⁄100 = 2.8 million seconds = 30 days.
For decontamination to be useful I think it needs to happen inside of 15 minutes. Certainly not multiples of a month.
I think we can reject blue light because the required power for rapid decontamination is far in excess of what we can provide.
A dose of 2.8 kJ /cm^2 is 28 MJ /m^2, so a 100W-luminous-power blue LED would decontaminate 10 square meters (a small room) in 280,000,000⁄100 = 2.8 million seconds = 30 days.
For decontamination to be useful I think it needs to happen inside of 15 minutes. Certainly not multiples of a month.
I think we can reject blue light because the required power for rapid decontamination is far in excess of what we can provide.