It says so. I assume someone's done this math?

>The environmental benefits of alkaline hydrolysis are significant. Its carbon footprint is about a tenth of that caused by burning bodies. Mr. Wilson said liquefaction uses a fraction of the energy of a standard cremator and releases no fumes.... the [effluent] is sterile and contains nutrients, so much so that it can be and is used as a fertilizer. Rick Vonderwell, who manages Tails Remembered, a pet crematory in Delphos, Ohio, uses the effluent at his farm, as do several large universities.