Have not seen that, thanks +James Salsman
One of the goals of CELSS.net is to make the system as much as possible biological. Mechanical things wear out, gaskets and filters have to be replaced. NASA has not been going in the biological direction, because it's not as easy to throw a switch to control, it's not linear, and it's not simple. A motor, you apply voltage/current to it and get out rpm/torque. A plant takes many inputs and has many outputs, same with all organisms, and they all tend to interact in complex ways. Ultimately however, it has to be done biologically to be done sustainably.