(c) What is membrane fouling? Predict the performance of the membrane filtration if its fouling effects are severe. Justify your answer by relating it with the pore dimension of the membrane. (8) (d) Yeast cells (a=3m) in a fermentor screte a low molecular weight product at a concentration that produces uniform rod-shape crystals by the size of 26m about 20 times the number concentration (particles /ml ) as the cells. i) Using concise statements, design ONE possible strategy to separate the product from broth and from the cells by taking the advantage of the particulate nature of the product. (5) ii) What additional information about the product crystals would be useful? (2)