Burning lignin does not add any greenhouse gases to the atmosphere, because the emissions are offset by the carbon dioxide absorbed during the growth of the plants used to make the ethanol.

• 又因为拿来制造乙醇的植物，生长时已经吸收了二氧化碳，所以总和起来，燃烧木质素并不会增加大气中的温室气体。