This study investigated the feasibility of H2 production by acid corrosion. employing a by-product from the fertilizer industry (Hexafluorsilic acid - H2SiF6) and waste iron sources. Different masses of metal from three different sources: iron powder (waste from metal workshops). steel wool and rebar (construction waste). https://www.findingthestory.com/product-category/cast-iron-smaw/