A system for removal of sulfur from sulfur-containing reformate to produce a reduced-sulfur reformate, comprising: a) a canister assembly for connection to a source of said sulfur-containing reformate and to a user of said reduced-sulfur reformate; and b) a replaceable cartridge assembly removably disposed within said canister assembly for receiving said sulfur-containing reformate from said canister assembly, removing at least a portion of sulfur from said sulfur containing reformate to produce said reduced-sulfur reformate, and conveying said reduced-sulfur reformate to said canister assembly, wherein said replaceable cartridge assembly comprises: a) a cartridge housing; and b) an element formed of material formulated for selective removal of sulfur from reformate, said element being removably mounted within said cartridge housing; characterized in that said canister assembly comprises: a) a cylindrical canister housing; b) a first end cap attached to a first end of said canister housing; c) a first port in said first end cap for entry of said sulfur-containing reformate into said canister housing; d) a second port in said first end cap for exit of said reduced-sulfur reformate from said canister assembly; and e) a connector member attached to a second end of said cylindrical canister housing; in that said replaceable cartridge assembly further comprises a second end cap attached to an end of said cartridge housing, said second end cap being sealing secured to, and separable from, said connector member, sealing means may include ring seal, threaded bores and bolts, circumferential threadings, or any other means that can be readily disassembled and can reliably seal a replacement adsorption cartridge assembly into canister assembly; and in that said replaceable cartridge assembly further comprises first and second spiders (48, 50) for spaced-apart installation into said cartridge housing, said spider adjacent said second end cap being spaced from said second end cap to create a headspace within said cartridge housing and wherein, said replaceable cartridge assembly further comprises a central return tube disposed in respective central apertures (56, 58) in said first and second spiders (48, 50) and wherein the element is removably mounted on said central return tube within said cartridge housing and between said first and second spiders. a) a canister assembly for connection to a source of said sulfur-containing reformate and to a user of said reduced-sulfur reformate; and b) a replaceable cartridge assembly removably disposed within said canister assembly for receiving said sulfur-containing reformate from said canister assembly, removing at least a portion of sulfur from said sulfur containing reformate to produce said reduced-sulfur reformate, and conveying said reduced-sulfur reformate to said canister assembly, a) a cartridge housing; and b) an element formed of material formulated for selective removal of sulfur from reformate, said element being removably mounted within said cartridge housing; characterized in that a) a cylindrical canister housing; b) a first end cap attached to a first end of said canister housing; c) a first port in said first end cap for entry of said sulfur-containing reformate into said canister housing; d) a second port in said first end cap for exit of said reduced-sulfur reformate from said canister assembly; and e) a connector member attached to a second end of said cylindrical canister housing; in that