An airtight vessel or enclosure in which bacteria decomposes biomass in water to produce biogas
A strong closed vessel, in which bones or other substances may be subjected, usually in water or other liquid, to a temperature above that of boiling, in order to soften them
autoclave consisting of a vessel in which plant or animal materials are digested
A closed tank for wastewater treatment, in which bacterial action is induced to break down organic matter
A cylindrical or spherical vessel used to treat cellulosic materials with chemicals under elevated pressure and temperature, so as to produce pulp for papermaking
In wastewater treatment, a closed tank; in solid-waste conversion, a unit in which bacterial action is induced and accelerated in order to break down organic matter and establish the proper carbon to nitrogen ratio
The reaction vessel in which wood chips or other plant materials are cooked with chemical to separate fiber by dissolving lignin