Simplified reaction network | Kinetic equations | ||
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Equation | No. | Equation | No. |
\({\text{CO}} + {\text{H}}_{2} {\text{O}} \to {\text{CO}}_{{2}} + {\text{H}}_{2} ;\; r_{1}\) | 2 | \(r_{1} = \frac{{K_{1} \cdot p_{{{\text{CO}}}}^{{{\text{OUT}}}} \cdot C_{{\text{X}}} }}{{K_{2} \cdot K_{{{\text{H}}, {\text{CO}}}} \cdot C_{{\text{X}}} + p_{{{\text{CO}}}}^{{{\text{OUT}}}} }}\) | 6 |
\(\vartheta_{{{\text{A}}/{\text{PHB}}}} \cdot {\text{A}} \to {\text{PHB}};\; r_{2}\) | 3 | \(r_{2} = K_{{\text{P}}} \cdot C_{{\text{X}}}\) | 7 |
\({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} \le 0.10 \;{\text{atm}}: \vartheta_{{{\text{A}}/{\text{X}}}} \cdot {\text{A}} \to {\text{X}}; r_{3}\) | 4 | \(r_{3} = K_{{{\text{X}}, {\text{A}}}} \cdot C_{{\text{A}}}\) | 8 |
\({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} > 0.10\;{\text{ atm}}: \vartheta_{{{\text{CO}}_{2} /{\text{X}}}} \cdot {\text{CO}}_{2} + \vartheta_{{{\text{A}}/{\text{X}}}} \cdot {\text{A}} \to {\text{X}}; \;r_{4}\) | 5 | \(r_{4} = K_{{{\text{X}}, {\text{CO}}_{2} }} \cdot \left( {\frac{{p_{{{\text{CO}}_{{2}} }}^{{{\text{OUT}}}} }}{{K_{{{\text{H}}, {\text{CO}}_{2} }} }}} \right)\) | 9 |
Mass balances | ||
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Compound | Equation | No. |
CO | \(\frac{1}{R \cdot T}\left( {\frac{{{\text{d}}p_{{{\text{CO}}}}^{{{\text{OUT}}}} }}{{{\text{d}}t}}} \right) = \frac{{{\text{k}}_{{\text{L}}} {\text{a}}^{{{\text{CO}}}} }}{{K_{{{\text{H}},{\text{ CO}}}} }} \cdot \left( {p_{{{\text{CO}}}}^{{{\text{IN}}}} - p_{{{\text{CO}}}}^{{{\text{OUT}}}} } \right) - r_{1}\) | 10 |
H2 | \(\frac{1}{R \cdot T}\left( {\frac{{{\text{d}}p_{{{\text{H}}_{2} }}^{{{\text{OUT}}}} }}{{{\text{d}}t}}} \right) = - \frac{{{\text{k}}_{{\text{L}}} {\text{a}}^{{{\text{H}}_{2} }} }}{{K_{{{\text{H}}, {\text{H}}_{2} }} }} \cdot \left( {p_{{{\text{H}}_{2} }}^{{{\text{OUT}}}} - p_{{{\text{H}}_{2} }}^{*} } \right) + r_{1}\) | 11 |
CO2 | \({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} \le 0.10 \;{\text{atm}}:\frac{1}{R \cdot T}\left( {\frac{{{\text{d}}p_{{{\text{CO}}_{2} }}^{{{\text{OUT}}}} }}{{{\text{d}}t}}} \right) = - \frac{{{\text{k}}_{{\text{L}}} {\text{a}}^{{{\text{CO}}_{2} }} }}{{K_{{{\text{H}}, {\text{CO}}_{2} }} }} \cdot \left( {p_{{{\text{CO}}_{2} }}^{{{\text{OUT}}}} - p_{{{\text{CO}}_{2} }}^{*} } \right) + r_{1}\) | 12 |
\({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} > 0.10 \;{\text{atm}}:\frac{1}{R \cdot T}\left( {\frac{{{\text{d}}p_{{{\text{CO}}_{2} }}^{{{\text{OUT}}}} }}{{{\text{d}}t}}} \right) = - \frac{{{\text{k}}_{{\text{L}}} {\text{a}}^{{{\text{CO}}_{2} }} }}{{K_{{{\text{H}}, {\text{CO}}_{2} }} }} \cdot \left( {p_{{{\text{CO}}_{2} }}^{{{\text{OUT}}}} - p_{{{\text{CO}}_{2} }}^{*} } \right) + r_{1} - \vartheta_{{{\text{CO}}_{2} /{\text{X}}}} \cdot r_{4}\) | 13 | |
Residual biomass (X) | \({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} \le 0.10 \;{\text{atm}}: \frac{{{\text{d}}C_{{\text{X}}} }}{{{\text{d}}t}} = r_{3}\) | 14 |
\({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} > 0.10\;{\text{ atm}}: \frac{{{\text{d}}C_{{\text{X}}} }}{{{\text{d}}t}} = r_{4}\) | 15 | |
PHB | \(\frac{{{\text{d}}C_{{{\text{PHB}}}} }}{{{\text{d}}t}} = r_{2}\) | 16 |
Acetate (A) | \({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} \le 0.10\;{\text{ atm}}: \frac{{{\text{d}}C_{{\text{A}}} }}{{{\text{d}}t}} = - \vartheta_{{{\text{A}}/{\text{PHB}}}} \cdot r_{2} - \vartheta_{{{\text{A}}/{\text{X}}}} \cdot r_{3}\) | 17 |
\({\text{If}}\;p_{{{\text{CO}}}}^{{{\text{IN}}}} > 0.10\;{\text{ atm}}: \frac{{{\text{d}}C_{{\text{A}}} }}{{{\text{d}}t}} = - \vartheta_{{{\text{A}}/{\text{PHB}}}} \cdot r_{2} - \vartheta_{{{\text{A}}/{\text{X}}}} \cdot r_{4}\) | 18 |