Scientists at the University of British Columbia say they have discovered a method to process the fatbergs in order to create methane. Their method begins right in the sewer, applying heat and hydrogen peroxide to break down the fatbergs and release fatty acids, which can then be broken down further using bacteria to produce useful methane fuel.
The team sees their method as an easy way to pre-treat fats without having to move the fatbergs. They are working with sewage treatment plants and dairy farms to pre-treat fats before they're added to manure in biogas digesters to produce methane.
The UBC researchers aren't the first to convert fatbergs into fuel (though their method could be an improvement). Much of the 143-ton fatberg clogging a London sewer was turned into biodiesel last year.
Ideally, though, people and businesses should refrain from putting fats — often cooking oil and grease — into sewer systems in the first place. In addition to the congealed fat, the fatbergs also include solids like wet wipes, food waste, condoms and other unmentionables.