Is that technique really "greener" than cremation ? Maybe you're not generating as much CO2 on-site but sodium hydroxide is made by electrolysing salt so it consumes a lot of energy.
>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.
("Effluent? That's Grandma!")