A recharger includes a manifold having an input to couple to a hydrogen generating module and an output port to couple to at least one rechargeable fuel cell. A vacuum pump is coupled to the manifold to evacuate the manifold. A valve is coupled to the manifold between the vacuum pump and the input of the manifold. A controller is coupled to control the vacuum pump and the valve, as well as an optional fan.

A system for supplying hydrogen gas to a lighter-than-air (LTA) vehicle includes a manifold having multiple vessels. Each vessel has a first chamber that is separated from a second chamber by a barrier. A trigger assembly integrated with the barrier allows a liquid to be combined with a reactant and a catalyst in the second chamber to form a chemical reaction to generate hydrogen gas. A pressure relief valve located on each vessel opens to allow the hydrogen gas to exit when a predetermined pressure is reached, and the hydrogen gas is supplied to the LTA vehicle connected to the manifold.

The invention relates to a method for producing syngas by means of solar radiation, in which the reactor of a receiver-reactor is periodically heated via an aperture provided in the same for solar radiation by means of the solar radiation to an upper reduction temperature for a reduction process and subsequently cooled to a lower oxidation temperature for an oxidation process in the presence of an oxidation gas, wherein the sunlight is guided through an absorption chamber onto an absorber configured as a reactor, which includes a reducible/oxidizable material, and wherein a gas that absorbs the black-body radiation of the absorber is guided through the absorption chamber and the absorption chamber is configured so that the back radiation of the absorber through the aperture is essentially absorbed by the gas. Radiation losses caused by back radiation of the black-body radiation exiting the optical aperture are thus avoided in accordance with the invention. The heat of the back radiation, however, can be utilized directly in the heat-transporting fluid and is available for a flexible usage. The receiver-reactor has a simple design and is suitable as a low-cost receiver-reactor.

Systems and methods use bimetallic alloy particles for converting hydrogen sulfide (H.sub.2S) to hydrogen (H.sub.2) and sulfur (S), typically during multiple operations. In a first operation, metal alloy composite particles can be converted to a composite metal sulfide. In a second operation, composite metal sulfide from the first operation can be regenerated back to the metal alloy composite particle using an inert gas stream. Pure, or substantially pure, sulfur can also be generated during the second operation.

A fuel tank for storing a hydrogen liquid carrier and a spent hydrogen liquid carrier includes a substantially rigid exterior tank wall including a first chamber and a second chamber. The first chamber is fluidly disconnected from the second chamber, and the second chamber includes a dynamically expandable and contractible enclosure, the enclosure being configured to define a dynamic boundary between the hydrogen liquid carrier and spent hydrogen liquid carrier. The fuel tank also includes a first channel in flow communication with one of the first chamber or the second chamber and a second channel in flow communication with another of the first chamber or the second chamber, wherein the first channel and the second channel are flow connected such that a flow through one of the first or second channels is returned to the another of the first or second channels, and that during the flow, the dynamic boundary changes position causing a change in a volume of the second chamber.

Methods and systems for removal of ions from aqueous fluids are provided. In certain embodiments, the present disclosure provides a method of removing one or more oxyanions from an aqueous fluid, including the steps of contacting an aqueous fluid containing oxyanions with an aluminum metal whereby aluminum ions are released from the aluminum metal into the aqueous fluid, wherein the one or more oxyanions in the aqueous fluid react with the aluminum ions to form one or more ettringites; controlling a rate of release of the aluminum ions from the aluminum metal; and removing at least a portion of precipitated ettringites from the aqueous fluid.

A hydrogen-supplying breathable layer in the present disclosure comprises: a thin layer wrapping a hydrogen-producing formula inside, having an airtight outer side as well as an air-permeable inner side on which a plurality of micro pores are opened and featuring a monolayer or a composite layer; a hydrogen-producing formula wrapped inside the thin layer and not dissipated but absorbing moistures in air or liquid water for generation of hydrogen; hydrogen permeating a plurality of micro pores and released to skin and intra-corporal parts. The hydrogen-producing formula in the hydrogen-supplying breathable layer comprises metal peroxides (metal hydroxides or metal hydrides) and aluminum powders (or silica powders); the breathable layer is applicable to a dressing pack or other sanitary paraphernalia in daily lives for relieving non-bacteria inflammations and promoting health care effects.

A hydrogen-supplying breathable layer in the present disclosure comprises: a thin layer wrapping a hydrogen-producing formula inside, having an airtight outer side as well as an air-permeable inner side on which a plurality of micro pores are opened and featuring a monolayer or a composite layer; a hydrogen-producing formula wrapped inside the thin layer and not dissipated but absorbing moistures in air or liquid water for generation of hydrogen; hydrogen permeating a plurality of micro pores and released to skin and intra-corporal parts. The hydrogen-producing formula in the hydrogen-supplying breathable layer comprises metal peroxides (metal hydroxides or metal hydrides) and aluminum powders (or silica powders); the breathable layer is applicable to a dressing pack or other sanitary paraphernalia in daily lives for relieving non-bacteria inflammations and promoting health care effects.

A method uses a chemical system to generate hydrogen gas. The chemistry involves a two-step reaction. In the first step, an alkaline hydride reacts with water to produce a hydroxide and hydrogen. In the second step, the hydroxide reacts with aluminum to produce even more hydrogen. The fuel is composed out of a mixture of powders of the alkaline hydride and aluminum. The fuel is encapsulated in a water soluble capsule for easy dispensing and protection against short time exposure to moisture. For large scale systems, the fuel is mixed with a low hydrophilicity ionic liquid to make it into a slurry that can be dispensed into a reaction chamber. The generation system comprises a tank, a pump, a first tube, a second tube, one or more capsules, a tank sensor assembly, and a processing system. The method comprises the steps of dispensing the capsules or the slurry in the tank; supplying water to the tank; and collecting hydrogen gas from the tank. After supplying water to the tank, the two reaction steps, being safe and controllable, facilitating hydrolysis reaction of metal and metal salts, are carried out. The produced hydrogen may be used in a fuel cell or a biomedical application.

An exemplary hydrogen production apparatus 100 according to the present invention includes a grinding unit 10 configured to grind a silicon chip or a silicon grinding scrap 1 to form silicon fine particles 2, and a hydrogen generator 70 configured to generate hydrogen by causing the silicon fine particles 2 to contact with as well as disperse in, or to contact with or dispersed in water or an aqueous solution. The hydrogen production apparatus 100 can achieve reliable production of a practically adequate amount of hydrogen from a start material of silicon chips or silicon grinding scraps that are ordinarily regarded as waste. The hydrogen production apparatus thus effectively utilizes the silicon chips or the silicon grinding scraps so as to contribute to environmental protection as well as to significant reduction in cost for production of hydrogen that is utilized as an energy source in the next generation.