A device for the aftertreatment of an exhaust gas of an internal combustion engine flowing through an exhaust line includes at least one dosing unit disposed in an opening of an exhaust pipe of the exhaust line and configured to add an exhaust-gas aftertreatment agent into the exhaust line. Preferably, the spent fermentation beer of Saccharopolyspora erythraea is treated with a cellulase and at least one glycosidase, and then concentrated. The liquid conductor is injected into a liquid chamber such that the liquid conductor makes contact with the outer surface of the workpiece. The side frame tubular assemblies define a seating section therebetween. The proximal portion also has a tapped bore, axially formed in the shaft, which has internal threads to receive another threaded device. Relevant process conditions that may be adjusted include: pressure, bias, time, and the type of gas in each step.