From “Scientific American: Genetically Modified Algae Could Replace Oil for Plastic” (Scientific American):
Because the algae take in three times the CO2 to produce a single ton of ethylene, the process acts as a carbon sink. That would be a significant improvement over steam cracking, which generates between 1 ½ and 3 tons of carbon dioxide per ton of ethylene, according to the researchers’ own analysis. The captured ethylene gas can then be transformed for use in a wide range of fuels and products.
“I think it’s better to turn CO2 into something useful,” Yu said, comparing the approach to other methods of carbon capture.
I think so too!