Table 6.

Comparative analysis of previous literature.

Details of the research	Hydrogen yield in mol/kg	Carbon conversion efficiency in %	References
E-waste to hydrogen via plasma gasification (3000 °C with 15 wt% CaO catalyst) along with a waste heat recovery system	72.6	93.6	Current research
Electrical switch waste to hydrogen via CO2 plasma gasification (2000 °C without catalyst) process	44.64	-	18
Waste biomass (reed straw/rice husk/corn cob) to hydrogen via steam gasification (600 °C at 25 bar pressure) along with a Ni-based catalyst	59.1	-	30
Biomass to hydrogen via two-stage alkaline thermal gasification (500 °C with 5% CaO catalyst) process	27.36	42.39	33
Polypropylene waste to hydrogen via plasma gasification (1200 °C) with a CO2 reactor	-	82	35