THE STUFF YOU CAN’T RE­CY­CLE ? PER­FECT

Herald Sun - Motoring - - Onroad -

AL­MOST any sort of rub­bish is suit­able for ethanol pro­duc­tion, says Coskata.

That in­cludes dirty nap­pies, used car tyres and even cane toads.

‘‘Rub­bish is rub­bish, any­where you look,’’ says Coskata’s James Fraw­ley. ‘‘It’s things that are go­ing into land­fill any­where. Most of the things you re­cy­cle we wouldn’t want in this process any­way.’’

The rub­bish be­comes what is called a feed stock, which has mostly been corn un­til now in the US.

It is con­verted to a ‘‘syn­gas’’ — com­posed mostly of car­bon diox­ide and ni­tro­gen — at ex­tremely high tem­per­a­ture be­fore be­ing fed to mi­croor­gan­isms that pro­duce ethanol as waste af­ter ‘‘eat­ing’’ the gas.

‘‘The or­gan­ism does not care whether that car­bon diox­ide and ni­tro­gen came from a tyre, a piece of biomass or what­ever, it all works the same,’’ says Fraw­ley.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.