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Experimental Study of Biodegradation of Ethanol and Toluene Vapors

Experimental Study of Biodegradation of Ethanol and Toluene Vapors

Experimental Study of Biodegradation of Ethanol and Toluene Vapors

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r x<br />

r N<br />

-1.27 -1 0<br />

1 0 0<br />

-0.2 0 0<br />

2<br />

θ<br />

b<br />

= r o2<br />

= 0 - -0.5 (5-26)<br />

7<br />

0.27 1 0<br />

r co2<br />

9<br />

r w<br />

-0.758 - 1<br />

7<br />

rATP<br />

-α11 0 δ<br />

13<br />

r NADH<br />

1.084 -1<br />

7<br />

The rates <strong>of</strong> reactions (5-18), (5-25) <strong>and</strong> (5-11) are ν 1 to ν 3 , <strong>and</strong> can be expressed by the<br />

rate vector ν r :<br />

r ⎡ν<br />

1 ⎤<br />

ν =<br />

⎢ ⎥<br />

⎢<br />

ν<br />

2 ⎥<br />

(5-27)<br />

⎢⎣<br />

ν ⎥<br />

3 ⎦<br />

The following set <strong>of</strong> eight linear relations is obtained, by writing out the balances for<br />

each <strong>of</strong> the 8 species (benzyl alcohol, biomass, ammonia, oxygen, carbon dioxide,<br />

water, ATP <strong>and</strong> NADH 2 ):<br />

r r<br />

r θ ⋅ν<br />

+ φ<br />

(5-28)<br />

= b<br />

Where φ r is the vector <strong>of</strong> flow, <strong>and</strong> r r is the vector <strong>of</strong> the overall conversion rates <strong>of</strong> the<br />

compounds.<br />

For batch bioremediations, there was no flow into or out <strong>of</strong> the system, i.e.,<br />

φ = 0 <strong>and</strong> φ = 0. Thus the overall conversion rates <strong>of</strong> benzyl alcohol <strong>and</strong> biomass<br />

b<br />

x<br />

based on 1 C-mol can be obtained as:<br />

r = 1.27ν + ν<br />

(5-28a)<br />

− b<br />

1<br />

2<br />

91

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