Technology Outline (Process Description)

A successful construction of a photochemical reactor at the laboratory scale, designed to produce large quantities of Green H2 fuel was achieved, with the assistance of the Z-Scheme charge transfer mechanism established via the employment of simulated metal industrial solid wastes. The demonstration unit, has the ability to generate approximately 45 L of green H2 in an hour, even when utilizing saltwater. This achievement was made possible by employing a pair of 200-watt LED light source. Furthermore, the lab-scale demonstration unit operates at a maximum green H2 production rate of around 1 litre per minute, where it requires a total of 0.4 KW-h of electrical energy. Hence, the as fabricated lab scaled demo unit is capable of effectively producing green hydrogen, even in bulk at a purely cost- effective manner. Assuming the cost of 1 unit of electricity to be ₹10, then to produce 45 L of green hydrogen, an estimated electricity cost of ₹4 will be required. This price scale is completely under the limit, which was put forwarded by Department of Science and Technology, Government of India.