Table 2 Estimated parameters for substrate-enzyme diffusion-limited kinetic model for UTRS and AFEX pretreated rice straw at different particle size and glucan loading
Substrate size | 1% Glucan loading | 3% Glucan loading | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Diffusion-limited kinetic | Equilibrium sugar concentrations, P e at t = 168 h | Diffusion-limited kinetic | Equilibrium sugar concentrations, P e at t = 168 h | |||||||
k(L/g.h) | n | R2(%) | Glucose (g/L) | Xylose (g/L) | k(L/g.h) | n | R2(%) | Glucose (g/L) | Xylose (g/L) | |
UTRS – 2 mm | 0.0475 | 0.293 | 98.5 | 2.9 | 0.6 | - | - | - | - | - |
UTRS – 5 cm | 0.0309 | 0.285 | 99.0 | 2.7 | 0.5 | - | - | - | - | - |
AC1RS – 2 mm | 0.0998 | 0.296 | 99.3 | 8.1 | 3.7 | 0.0300 | 0.364 | 99.2 | 24.4 | 9.9 |
AC1RS – 5 mm | 0.1003 | 0.320 | 99.4 | 7.5 | 3.1 | 0.0286 | 0.340 | 99.5 | 21.8 | 8.7 |
AC1RS – 2 cm | 0.1078 | 0.440 | 99.4 | 7.6 | 2.8 | 0.0288 | 0.444 | 99.2 | 22.0 | 8.2 |
AC1RS – 5 cm | 0.0929 | 0.456 | 97.3 | 6.7 | 2.3 | 0.0282 | 0.509 | 99.5 | 19.9 | 7.0 |
AC2RS – 2 mm | 0.0958 | 0.294 | 99.9 | 8.6 | 4.1 | 0.0184 | 0.397 | 98.9 | 22.1 | 10.1 |
AC2RS – 5 mm | 0.1216 | 0.322 | 99.1 | 7.9 | 3.5 | 0.0182 | 0.381 | 98.0 | 20.3 | 8.6 |
AC2RS – 2 cm | 0.1412 | 0.438 | 98.6 | 9.1 | 4.0 | 0.0323 | 0.528 | 99.5 | 27.0 | 10.6 |
AC2RS – 5 cm | 0.1598 | 0.522 | 98.7 | 10.0 | 4.3 | 0.0345 | 0.616 | 98.4 | 29.4 | 11.4 |