Morphology of hydrogen producing bacteria obtained from alkali pretreated food waste.
Schematic representation of GA coupled to NN.
2-Dimensional contour plots indicating the influence of process parameters on H2 yield (a) influence of initial pH and sucrose conc. (g/l). (b) Influence of inoculum size (% v/v) and sucrose conc. (g/l). (c) Influence of peptone conc. (g/l) and sucrose conc. (g/l). (d) Influence of inoculum size (% v/v) and initial pH. (e) Influence of peptone conc. (g/l) and initial pH. (f) Influence of peptone conc. (g/l) and inoculum size (% v/v).
Schematic representation of neurons in the neural network.
Optimal topology for neural network (a) R2 plot and (b) root mean square plot.
Comparison of experimental and predicted H2 yields (a) RSM model predicted values and (b) ANN model predicted values [hydrogen yield is in mol H2/mol sucrose].
Levels of variables and their main effects on the response.
Experimental design for steepest ascent method.
The Box-Behnken experimental design for three independent variables.
Optimized medium composition for hydrogen yield using different methodologies.
Comparison of H2 yield predicted by RSM and ANN model to experimental values.
Experimental design for testing RSM and ANN-GA models.
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