Abstract: The invention describes a process wherein high-purity hydrogen and oxygen gases can be economically produced via a water electrolysis method, utilizing cheap energy recovered from an incineration process of industrial, municipal, agricultural and other waste materials in a fluidized-bed incinerator. In the said process combustible solid and/or liquid wastes with high energy content are exploited to supply the energy required to incinerate and decompose other solid or liquid wastes with lower or no energy content. Also the process provides a method wherein any solid, liquid or gaseous emissions or effluents from the process are effectively trapped, controlled and converted to environmentally acceptable, inert and harmless products. Also the process includes an energy recovery system such that the thermal energy from the incineration is used to produce steam and generate electricity required for all operations in the process including the production of oxygen.