A biomass suspension is being ultrafiltered using a flat membrane module, which completely retains biomass particles. Bulk concentration is 4.4 g L-? At a certain transmembrane pressure, the permeate flux is 0.0936 m hf. The diffusivity of biomass particles is 10 x 10-5m2 s=1 while the wall concentration is estimated to be 0.01 kg L-1. This membrane is 0.05 mm thick. (a) Estimate the mass transfer coefficient. [40 marks] (b) If the permeate flux decreases to 1.3 x 10-5m 5-1 while maintaining the wall concentration, estimate the new mass transfer coefficient [30 marks] (c) If the permeate flux decreases to 1.3 x 10-5m 5-1 while maintaining the same operating conditions within the membrane module, estimate the new wall concentration. PA