It is desired to use ultra-filtration for 800kg of a solution containing 0.05% wt of a protein to obtain a solution of 1.10% wt. The feed is recirculated by the membrane with a surface area of 9.90m2. The permeability of the membrane is Aw=2.50102kg/atm.m2.s. Neglecting the effects of concentration polarization, calculate the final amount of solution and the time to perform this using a pressure difference of 0.50atm