Hydrogen Production from Supercritical Water Gasification of Model Compounds of Crude Glycerol from Biodiesel Industries

Biodiesel production through transesterification results in a large quantity of crude glycerol as byproduct, the utilization which is technically and economically challenging. Because ability to efficiently process wet feedstocks, supercritical water gasification (SCWG) utilized this study convert into hydrogen-rich syngas. A significant challenge addressed decomposition routes different heterogeneous components during SCWG. Pure glycerol, methanol oleic acid were investigated for SCWG model compounds glycerol. at temperature, pressure, feedstock concentration reaction time 500 °C, 23–25 MPa, 10 wt% 1 h, respectively, revealed exhibit highest H2 yield 7.7 mmol/g, followed by pure (4.4 mmol/g) (1.1 mmol/g). The effects from 30 increased all compounds. Response surface methodology (RSM) was used develop response curve visualize interactive behavior equations prediction H2-rich gas yields function composition mixture. Predictive models showed good agreement with experimental results, demonstrating high accuracy robustness model. These findings demonstrated strong potential generate