Upstream slides

1. EFFECTS OF RHEOLOGICAL
PROPERTIES ON MIXING
XBT602/ process biotechnology
(Up stream)
Present by :-
A.VIGNESH (121012101436)
K.GUNAL (121012101416)
S.LOKESH (121012101420)
B.TECH- BIOTECHNOLOGY
3rd year
Summited by :-
Ms. P MALA
Assistant professor
Department of biotechnology
PMIST

2. •Rheological properties refer to
how materials deform and flow under
stress. They can significantly influence
mixing processes in various ways:

3. Viscosity
Viscosity determines how easily a
substance flows. Higher viscosity can lead
to slower mixing as it requires more
energy to overcome resistance. For
example, thick liquids like honey mix
more slowly than water due to their
higher viscosity.

4. Shear-thinning or shear-thickening
behavior
• Some materials change viscosity depending
on the shear rate. Shear-thinning materials
(viscosity decreases with increasing shear
rate) may mix more easily once agitation
starts, while shear-thickening materials
(viscosity increases with shear rate) can
become more resistant to mixing as shear
forces increase.

5. Thixotropy
 Thixotropic materials become less
viscous over time when subjected to
constant shear stress. In mixing, this
can lead to easier mixing over time as
the material “thins out” under
agitation.

6. Elasticity
Elastic materials can deform and then
return to their original shape. In mixing,
highly elastic materials can resist
deformation during mixing, affecting the
thoroughness of mixing.

7. Particle size and distribution
Rheological properties can influence
particle size and distribution during
mixing. Materials with high viscosity may
have difficulty dispersing particles evenly,
leading to non-uniform mixing.

8. Temperature sensitivity
Some materials exhibit changes in
rheological properties with temperature
variations. Mixing processes that involve
temperature changes can therefore
impact the flow behavior and mixing
efficiency

9. Understanding these rheological
properties is crucial for optimizing mixing
processes in various industries like food,
pharmaceuticals, cosmetics, and
manufacturing, ensuring efficient and
consistent product quality

10. THANK YOU...