In a trickling biological filter, the BOD value of the feed stream is S_0i = 500 mg/l with a feed flow of F = 10³ l/h. The effluent BOD value is desired to be S₀ = 10 mg/l. The following kinetic parameters for the biocatalysts are known: r_m = 20 mg/S/l .h and K_s = 200 mg S/l. The biofilm thickness is L = 0.1 mm. The cross-sectional area of the filter is A = 2 m² , and the biofilm surface area per unit volume of the bed is a = 500 cm² /cm³ . Assume that dissolved oxygen is the rate-limiting substrate and the diffusion coefficient of oxygen is D_O2 = 2 × 10^-5 cm² /s. Determine the required height of the bed. You can assume first-order bioreaction kinetics?

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TLS Online TPP Program

#Question id: 10880

#SCPH06 I Botany

Which marine zone would have the lowest rates of primary productivity (photosynthesis)?

TLS Online TPP Program

#Question id: 16481

#SCPH28 | Zoology

The evolution of continuous cell lines from primary cultures occurs due to which reason

TLS Online TPP Program

#Question id: 15699

#I Life Science/ Life Sciences Group – I-V

The PROSITE pattern representing the conserved sequence motif for a new family of AMP binding protein is [LIVMFY]-X(2)-[STG]-[STAG]-G-[ST]. You are given a sequence of a 15-amino acid stretch starting from the first residue of the motif. Which one of the following proteins is likely to have AMP binding function?

TLS Online TPP Program

#Question id: 20540

#SCPH06 I Botany

Toluene, ethylbenzene and xylene must be kept to ________levels in drinking and recreational waters due to their toxicity

TLS Online TPP Program

#Question id: 10502

#I Life Science/ Life Sciences Group – I-V

Arabidopsis roots in iron-deficient growth media, thereby facilitating increased iron uptake. The resulting increase in iron content of the plants by