Lewis acid catalyzed gasification of humic acid in supercritical water

Humic acid is a model compound of sewage sludge that occurs as a result of decomposing organic matter. Supercritical water gasification of humic acid was performed at a temperature, feed concentration and reaction time of 600 °C, 15 wt% and 75 min, respectively with variable concentrations (5–15 wt%) of Lewis acid metal chloride catalysts. The non-catalytic gasification of humic acid resulted in H2 yield (0.79 mol/kg), total gas yield (1.59...