Solar hydrogen production in India

Tapping the full potential of clean, renewable energy resources to effectively meet the steadily increasing energy demand is the critical need of the hour and an important proactive step towards achieving sustainability. India's solar energy consumption has witnessed a nearly twofold increase from 6.76 GW in 2015–16 to 12.28 in 2016–17. Since India enjoys the advantage of high solar insolation, increasing the efficiency of solar power systems can tremendously boost clean energy generation. The escalating energy crisis currently faced by India has compelled scientists and researchers to focus on identifying novel economical and efficient technologies for large-scale energy production. Direct utilization of solar energy for fuel conversion has attained greater importance. In this context, generation of hydrogen from industrial wastewater by using solar energy offers significant economic as well as environmental benefits. This investigative review paper focuses on the importance of the solar photocatalytic process to recover the clean energy H2 from sulphide containing industrial wastewater.