5. Cells capable of degrading a chemical waste are entrapped in a spherical gel beads. The beads are packed into a colum

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5 Cells Capable Of Degrading A Chemical Waste Are Entrapped In A Spherical Gel Beads The Beads Are Packed Into A Colum 1 (47.93 KiB) Viewed 16 times

5. Cells capable of degrading a chemical waste are entrapped in a spherical gel beads. The beads are packed into a column. The bioconversion is limited by the substrate and follows the Monod rate expression. Data: Column diameter : D=5 cm Particle diameter: d=0.3 cm Void fraction: ε = 0.15 Feed substrate :S, = 1g/L Feed flow rate : Q= 4 ml/min Monod equation constants: rm =Hmax[X]/Yx/s = 10 g/L h, Ks=20 g/L Conversion :Xs =0.999 Substrate diffusivity: D, 10-6 cm²/ s Find the height of the column needed to achieve the required conversion. Note that since S<<Ks, a first order reaction kinetics can be assumed in finding the effectiveness factor.