Cycle periods of 1 40 min were used whilst the cycle split, Sox (with respect to the O2-rich cycle) was varied from 0.1 to 0.9.
The cycle split could be varied by shortening the oxygen-feed half of the cycle with little effect on the time-average results.
An analytical solution is presented to describe the mean performance as a function of concentration, length of period and cycle split.
By alternating propane and oxygen with a 1 : 1 cycle split, time-average propene yields higher than steady state could be obtained.
Cycle split has the most significant (85%) positive effect on the improvement in H2 and CO production and the appearance of resonant peaks while cycle period appeared to have detrimental effect on product yield.
The effect of key parameters such as extent of gas/liquid limitation, total cycle period, cycle split, and liquid mass velocity were investigated experimentally to demonstrate the cause effect relationships in periodic operation.
The effects of cycle period, cycle split, and liquid flow rate on SO2 removal in a periodically operated trickle bed of activated carbon were investigated using a simulated flue gas containing 2500 ppm SO2.
The highest rates were obtained for a cycle period of 12 s, the lowest investigated, and at a cycle split of 0.4 which coincides with the composition of the optimum steady-state feed mixture.
The top Democratic-aligned super donor was Chicago media mogul Fred Eychaner, who gave $14.1 million over the course of the election cycle, split among five groups.
To assess the impact of anaerobic constraints on model predictions, we performed simulations by varying the activation or inhibition of the following specific constraints: i) oxygen uptake constrained to zero, ii) unconstrained sterol and unsatured fatty acids uptake, iii) TCA cycle split up into two branches, and iv) quinone-mediated reactions constrained to zero (Table 3).
