A system and method for production of ammonia are presented. The system includes a reactor adapted to receive therein through a first input of the reactor sulfate ammonia and a reacting agent through a second input of the reactor, wherein the reactor is heated to a temperature not to exceed a predetermined temperature to create a chemical reaction between a sulfate ammonia and the reacting agent; and a purifier adapted to accept ammonia from the reactor and perform a purification process to purify the ammonia to a predetermined degree of purification.

The present invention relates to a method for recovering lithium from brine, and provides a method for recovering lithium from brine, the method comprising: (a) an impurity removal step of adding a carbonate supply source to brine including lithium, magnesium and calcium to precipitate and remove magnesium and calcium impurities; (b) a pH adjusting step of adding an acid to the brine from which the impurities have been removed, to adjust the pH of the brine; (c) a lithium-aluminum compound recovery step of adding an aluminum supply source to the pH-adjusted brine to recover a lithium-aluminum compound; (d) a lithium sulfate and aluminum oxide formation step of adding the lithium-aluminum compound to a sulfur supply source and calcining same to form lithium sulfate and aluminum oxide; and (e) a lithium sulfate solution yield step of selectively dissolving lithium sulfate from among the formed lithium sulfate and aluminum oxide to yield a lithium sulfate solution.

The present invention relates to a method for recovering lithium from brine, and provides a method for recovering lithium from brine, the method comprising: (a) an impurity removal step of adding a carbonate supply source to brine including lithium, magnesium and calcium to precipitate and remove magnesium and calcium impurities; (b) a pH adjusting step of adding an acid to the brine from which the impurities have been removed, to adjust the pH of the brine; (c) a lithium-aluminum compound recovery step of adding an aluminum supply source to the pH-adjusted brine to recover a lithium-aluminum compound; (d) a lithium sulfate and aluminum oxide formation step of adding the lithium-aluminum compound to a sulfur supply source and calcining same to form lithium sulfate and aluminum oxide; and (e) a lithium sulfate solution yield step of selectively dissolving lithium sulfate from among the formed lithium sulfate and aluminum oxide to yield a lithium sulfate solution.

A method for isolating a humic substance from alumina process liquor is provided herein. Separate from or within the method, bauxite is processed to form the alumina process liquor. The method includes providing a diallyldimethylammonium chloride-containing polymer. The method further includes providing an amine-containing polymer. The method further includes combining the diallyl dimethyl ammonium chloride, the amine-containing polymer, and the alumina process liquor, to isolate the humic substance from the alumina process liquor.

A method for isolating a humic substance from alumina process liquor is provided herein. Separate from or within the method, bauxite is processed to form the alumina process liquor. The method includes providing a diallyldimethylammonium chloride-containing polymer. The method further includes providing an amine-containing polymer. The method further includes combining the diallyl dimethyl ammonium chloride, the amine-containing polymer, and the alumina process liquor, to isolate the humic substance from the alumina process liquor.

A method for the preparation of an amorphous silica-alumina composition is provided that advantageously utilizes as a component oxidized disulfide oil, for example derived from a waste refinery stream of disulfide oil. The amorphous silica-alumina is formed from an aqueous mixture of an aluminum source, a silica source, oxidized disulfide oil, an alkali metal source and optionally a structure directing agent, which is heating under conditions and for a time effective to form the amorphous silica-alumina.

A method for the preparation of an amorphous silica-alumina composition is provided that advantageously utilizes as a component oxidized disulfide oil, for example derived from a waste refinery stream of disulfide oil. The amorphous silica-alumina is formed from an aqueous mixture of an aluminum source, a silica source, oxidized disulfide oil, an alkali metal source and optionally a structure directing agent, which is heating under conditions and for a time effective to form the amorphous silica-alumina.

Methods and compositions for improving performance of flocculants in an industrial production process. Methods include pH triggered cross-linking reaction between a flocculating agent, such as dextran, and a composition comprising a boronic acid-containing polymer. The pH trigger can be provided by a fluid having a pH of 8 or more. The production process can be a Bayer Process and the fluid is caustic liquor or slurry in the fluid circuit of the Bayer, wherein the reaction time is reduced over conventional methods and the cross-linked dextran composition effectuates improved flocculation of the trihydrate particles.

A method for the preparation of an amorphous silica-alumina composition is provided that advantageously utilizes as a component oxidized disulfide oil, for example derived from a waste refinery stream of disulfide oil. The amorphous silica-alumina is formed from an aqueous mixture of an aluminum source, a silica source, oxidized disulfide oil, an alkali metal source and optionally a structure directing agent, which is heating under conditions and for a time effective to form the amorphous silica-alumina.

A method for the preparation of an amorphous silica-alumina composition is provided that advantageously utilizes as a component oxidized disulfide oil, for example derived from a waste refinery stream of disulfide oil. The amorphous silica-alumina is formed from an aqueous mixture of an aluminum source, a silica source, oxidized disulfide oil, an alkali metal source and optionally a structure directing agent, which is heating under conditions and for a time effective to form the amorphous silica-alumina.