A method of producing ammonium phosphates from at least one mineral containing phosphate and an element which is calcium, magnesium, iron, or aluminum. The method includes contacting the at least one mineral (or a combination of them) with a cation exchanger for a time and at a temperature sufficient to yield phosphoric acid from the mineral.

Provided are a method of recovering phosphoric acid in the form of ammonium phosphate or a hydrate thereof from a fermentation broth or a waste liquid thereof, and/or a method of reusing the recovered phosphoric acid in fermentation.

Provided are a method of recovering phosphoric acid in the form of ammonium phosphate or a hydrate thereof from a fermentation broth or a waste liquid thereof, and/or a method of reusing the recovered phosphoric acid in fermentation.

A method can include coupling sulfur dioxide depolarized electrolysis (e.g., electrochemical oxidation of sulfur dioxide to sulfuric acid with electrochemical reduction of water to hydrogen) with the contact process to facilitate formation of high concentration sulfuric acid with concurrent hydrogen production. The sulfuric acid and hydrogen can optionally be used cooperatively for downstream processes (e.g., metal extraction from ore, fertilizer production, hydrocarbon processing, etc.).

A method can include coupling sulfur dioxide depolarized electrolysis (e.g., electrochemical oxidation of sulfur dioxide to sulfuric acid with electrochemical reduction of water to hydrogen) with the contact process to facilitate formation of high concentration sulfuric acid with concurrent hydrogen production. The sulfuric acid and hydrogen can optionally be used cooperatively for downstream processes (e.g., metal extraction from ore, fertilizer production, hydrocarbon processing, etc.).

A method can include: processing precursors, electrochemically oxidizing an anolyte and reducing a catholyte in an electrolyzer, and cooperatively using the oxidized anolyte and reduced catholyte in a downstream process. The electrolyzer can include an anode, a cathode, and a separator. The anode can include an anolyte, an electrode, an anolyte reaction region. The cathode can include a catholyte, an electrode, a catholyte reaction region.

A method can include: processing precursors, electrochemically oxidizing an anolyte and reducing a catholyte in an electrolyzer, and cooperatively using the oxidized anolyte and reduced catholyte in a downstream process. The electrolyzer can include an anode, a cathode, and a separator. The anode can include an anolyte, an electrode, an anolyte reaction region. The cathode can include a catholyte, an electrode, a catholyte reaction region.

Disclosed herein are compositions comprising a super absorbent polymer (SAP) concentrate mixed with a long-term fire-retardant concentrate, prior to dilution with water, to form a mixed concentrate and methods of making such compositions. The mixed concentrate composition can be subsequently mixed with water to produce an aqueous fire-fighting solution.

Disclosed herein are compositions comprising a super absorbent polymer (SAP) concentrate mixed with a long-term fire-retardant concentrate, prior to dilution with water, to form a mixed concentrate and methods of making such compositions. The mixed concentrate composition can be subsequently mixed with water to produce an aqueous fire-fighting solution.

A method of producing ammonium phosphates from at least one mineral containing phosphate and an element which is calcium, magnesium, iron, or aluminum. The method includes contacting the at least one mineral (or a combination of them) with a cation exchanger for a time and at a temperature sufficient to yield phosphoric acid from the mineral.