# Learning Goal: I’m working on a environmental engineering multi-part question an

Learning Goal: I’m working on a environmental engineering multi-part question and need an explanation and answer to help me learn.Many authors report that in VOC incinerators the steps leading to the formation of CO and
H2O are relatively fast and that the oxidation of CO to CO2 is slower, so the size of the
incinerator is determined by the size required to complete the CO oxidation. Test this idea
with the following calculations:
a. Estimate the time required to combust 99 percent of the toluene in a waste stream
containing 5000 ppm of toluene at 1400oF; use the values in Table 10.4. (10 points)
b. Assume that the following step is instantaneous:
7 8 2 2 C H O CO H O + → + 5.5 7 4
and, then
estimate the time required for the step:
2 2 CO O CO + → 0.5
. Assume the kinetics are given
by:
 
( )    
0.5 0.5
2 2 exp
d CO
A E RT CO O H O
dt
= − −
. (25 points)
Where,
14 3 A cm mol s E kcal mol =  = 1.3 10 . , 30 / I can provide Table 10.4 upon request. See attached file if text is broken.
Requirements: as long as needed   |   .doc file