Using animal biofuels in aviation has been touted as a solution for cutting emissions. But the practice may lead to other environmental problems, a study warns.
There might not be enough dead animals to meet the demand for biofuel, the study says. And killing more of them doesn’t seem to be the right path, it adds.
Lower quality animal fats have already been long used for producing pet food, soap, candles and combustion material for boilers. This means soaring demand from the aviation industry could crowd out these manufacturers, forcing them to turn to alternatives such as palm oil, which would result in increased net carbon emissions globally, according to the study.
“In the worst case, moving animal fats out of existing uses could cause a large increase in net emissions rather than any reduction,” the study’s author, Chris Malins, wrote.
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