Impeller and sparger assemblies for a bioprocessing system

A sparger assembly for a bioprocessing system, comprising:

• a base plate;
• and
• at least one aeration manifold removably connected to the base plate, each aeration manifold including at least one inlet for receiving a gas and a plurality of gas outlet openings for delivering the gas to a fluid within the bioprocessing system;
• and
• an impeller assembly comprising a hub and at least one blade operatively connected to the hub, the at least one blade including a first portion connected to the hub and extending generally vertically, a second portion extending at an upward angle from the first portion, and a third portion extending from the second portion, wherein the third portion is substantially horizontal, wherein the third portion has a distal end and a proximal end, with the distal end being wider than the proximal end,
• wherein the base plate includes a mounting device enabling coupling of the impeller assembly to the base plate adjacent to the at least one aeration manifold;
• and
• wherein the at least one aeration manifold is arcuate in shape.