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Salting and burying biomass crops in dry landfills could economically capture greenhouse gases for thousands of years
“Dryness, sometimes assisted by salt, effectively reduces the internal relative humidity of the sequestered biomass,” said Yablonovitch. “And that has been proven to prevent decomposition for thousands of years.”
The researchers point to a date palm named Methuselah as proof that biomass, if kept sufficiently dry, can be preserved well beyond the next millennium.