Pyrolysis of low density polyethylene (LDPE) by equilibrium fluid catalytic cracking (FCC) was studied in a stirred reactor under different process parameters. In this work, the effect of process parameters such as degradation temperature (420-510°C), catalyst/polymer ratio (0-60%), carrier gas type (H2, N2, ethylene, propylene, Ar and He), residence time and agitator speed (0-300 rpm) on the c...

Penicillin production by free and agar immobilized Penicillium chrysogenum cells was investigated in a stirred tank reactor. increased two times with cells. In order to verify the oxygen transfer efficiency STR, mass coefficient determined using dynamic gassing out method at end of steady state operation reactor after achieving penicillin production. The (KLa) obtained STR 20% (V/V) beads, 1 VV...

The distribution of velocity, sludge, and dissolved oxygen in a full-scale anaerobic-anoxic-oxic (A2/O) oxidation ditch was numerically simulated under three rotation speed scenarios. viscosity settling rate activated sludge were defined through user-defined function (UDF), the phase calculated using mixture multiphase flow model. Dissolved (DO) set as source (UDS) its generation consumption ra...

An experimental study has been performed in order to establish both the effect of agitator geometry and agitation rate onthe dissolution kinetics spherical candies. To do so, constants were determined aqueous solution by way ofthe Hixson-Crowell model on three types agitators, namely, a paddle two blades, turbine agitators four andsix blades respectively. Subsequently, for fixed temperature was...