A process for the obtention of a hydrogen-rich gas stream from aluminium waste by obtaining a process water resulting from contacting aluminium salt slag with tap water, adding the process water of the previous step to an aluminium waste in a solution, and the hydrolysis of that solution to obtain the gas stream. The process is capable to obtain a yield of reaction close to 100% in higher reaction times.

A device includes a container having a top plate containing an array of oxygen limiting pinholes and a chamber to hold a chemical hydride fuel, a fuel cell proton exchange membrane electrode assembly supported within the container between the top plate and the chamber, a first gas diffusion layer supported between the fuel cell proton exchange membrane electrode assembly and the top plate, and a second gas diffusion layer supported between the fuel cell proton exchange membrane electrode assembly and the chamber.

A modular device for generating hydrogen gas from a hydrogen liquid carrier may include a housing; an inlet for receiving the hydrogen liquid carrier; and at least one cartridge arranged within the housing. The cartridge may include at least one catalyst configured to cause a release of hydrogen gas when exposed to the hydrogen liquid carrier. The modular device may include a gas outlet for expelling the hydrogen gas released in the modular device and a liquid outlet for expelling spent hydrogen liquid carrier.

A dihydrogen generator (5) comprising a chamber (10), a reservoir (260) for containing a reagent and a catalytic system (15), the chamber being impervious to dihydrogen and defining an internal chamber space (45), the reservoir being housed in the internal chamber space and comprising a reservoir wall (270, 275) impervious to a liquid and permeable to dihydrogen, the catalytic system being disposed at least partly in the reservoir and comprising a catalyst (205) for the reaction that generates dihydrogen from the reagent, the chamber comprising a discharge valve (300) for withdrawing the dihydrogen from the internal chamber space, an injection valve (295) for injecting the liquid into the reservoir and a drain valve (460) for draining the liquid from the reservoir.

A system is capable to safely generate a continuous controlled hydrogen flow. The passive auto sufficient hydrogen system is very valuable for example for emergency power back up, propulsion application, battery charging or powering portable devices. Also, a chemical process generates hydrogen using alkali metals, alkaline earth metals, hydrides of alkali metals or hydrides of alkaline earth metals to obtain primary by products from water. Then, the primary byproducts react with a metal reactant to obtain additional hydrogen.

A system is capable to safely generate a continuous controlled hydrogen flow. The passive auto sufficient hydrogen system is very valuable for example for emergency power back up, propulsion application, battery charging or powering portable devices. Also, a chemical process generates hydrogen using alkali metals, alkaline earth metals, hydrides of alkali metals or hydrides of alkaline earth metals to obtain primary by products from water. Then, the primary byproducts react with a metal reactant to obtain additional hydrogen.

A device includes a container having a top plate containing an array of oxygen limiting pinholes and a chamber to hold a chemical hydride fuel, a fuel cell proton exchange membrane electrode assembly supported within the container between the top plate and the chamber, a first gas diffusion layer supported between the fuel cell proton exchange membrane electrode assembly and the top plate, and a second gas diffusion layer supported between the fuel cell proton exchange membrane electrode assembly and the chamber.

Methods and devices for generating power using PEM fuel cell power systems comprising a rotary bed reactor for hydrogen generation are disclosed. Hydrogen is generated by the hydrolysis of fuels such as lithium aluminum hydride and mixtures thereof. Water required for hydrolysis may be captured from the fuel cell exhaust. Water is preferably fed to the reactor in the form of a mist generated by an atomizer. An exemplary 750 We-h, 400 We PEM fuel cell power system may be characterized by a specific energy of about 550 We-h/kg and a specific power of about 290 We/kg.

A method for reusing waste including organic components in a bath of molten salt including providing to a reactor, at least one salt or a mixture of salts including at least one alkali metal hydroxide, providing the waste to the reactor, heating the at least one salt or mixture of salts in the reactor at a temperature above the melting point of the salt. Thus, the provided salt melts to form a liquid reaction medium, and induces an at least partial oxidation of the organic components. At least one compound resulting from this oxidation is recovered. At least one alkali metal hydroxide includes water of crystallisation, acting as oxidising agent for the organic compounds in the reaction medium, in such a way as to participate in the production of dihydrogen, the latter being recovered for the reuse thereof.

The present invention provides a method for promoting hair growth and improving white hair condition, including supplying hydrogen and oxygen to scalp and hair. The present invention further provides a hear wearable device or a hairdressing apparatus for promoting hair growth and improving white hair condition, including a gas supply device, wherein the gas supply device includes a separation layer, a hydrogen-producing composition wrapped in the separation layer, and an oxygen-producing composition wrapped in the separation layer; the hydrogen-producing composition includes: (1) a metal hydroxide and aluminum powder, or (2) a metal peroxide and aluminum powder, or (3) a hydride, or (4) a combination of the three above; and the oxygen-producing composition includes a metal peroxide.