Gas diffuser, aerator, or sparger apparatus

A diffuser for discharging gas into a body of liquid comprising, in combination, a first gas chamber, inlet means for gas in communication with the interior of said gas chamber, outlet means for gas from said chamber comprising at least one perforation located in an end wall of said chamber opposite said inlet means, a second magnetic chamber defined by spaced apart opposed sidewalls made of material magnetizable or conductive to lines of magnetic flux, magnetic means for inducing magnetic poles in said opposed sidewalls of said magnetic chamber and constructed and arranged to provide essentially horizontal magnetic flux lines across the upper portion of said magnetic chamber, the sidewalls of said magnetic chamber being constructed and arranged so that gas from said gas chamber perforation is discharged into said magnetic chamber between said sidewalls at an open bottom of said magnetic chamber and permitted to rise and leave said chamber through an open top of said chamber when said diffuser apparatus is located beneath the surface of a body of liquid, the sidewalls being further constructed and arranged to permit liquid from said liquid body to enter said magnetic chamber to replace liquid vertically lifted from said magnetic chamber and intersectingsaid flux lines simultaneously with the gas vertically lifing the liquid and also intersecting said magnetic flux lines.