Sterilization Questions

• The reduction of number of cells from 1010 to one will result into the del factor (Δ) of
• If the packing density (α) is defined as the volume of the fiber unit volume of filter bed, the velocity within the filter void space is equal to (where V is velocity in fluid void space and V0 is undisturbed fluid velocity)
• For the turbulent flow, the dispersion coefficient is correlated as a function of
• The deviation from ideal plug flow due to axial mixing can be described by the
• The del factor (Δ) increases as the final number of cells
• For indirect heating, the plate and frame heat exchanger is generally more effective than the shell and tube heat transfer due to its
• The overall del factor (Δ) may be represented as
• Typical aeration rates for aerobic fermentation are
• The typical size of particles collected by diffusion mechanism is
• Analogus to the molecular diffusion, the x-directional flux of microorganisms suspended in a medium due to the axial mixing can be represented as (where Jn is flux component 'n', cn is concentration of'n')
• The mechanism of air filtration in fibrous filter is
• Glass fibers are favorable as a filter medium because they give a
• The mechanical means of accomplishing sterilization of fermentation media/equipment is
• The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
• The filter material used for air filtration system is/are
• The sterilization method depends