A system includes a device having a blood side, a solution side, and a semipermeable membrane structurally configured for diffusion of one or more solutes therethrough. The system also includes a first extracorporeal circuit having one or more first fluid connectors for connecting the blood side of the device to the vascular system of a first animal, a second extracorporeal circuit including one or more second fluid connectors for connecting the solution side of the device to the vascular system of a second animal, a first pump in fluid communication with at least one of the first and second extracorporeal circuits, and a driver mechanically coupled to the first pump, the driver configured to drive the first pump using energy from an energy source.
