A metal adsorption agent including a chelating agent (A) and a chelating agent (B), wherein the chelating agent (A) is a metal adsorption agent containing a carrier having a glucamine-type functional group, and the chelating agent (B) is a metal adsorption agent containing a carrier having a thiol group, a thiourea group, an amino group, a triazabicyclodecene-inducing group, a thiouronium group, an imidazole group, a sulfonate group, a hydroxy group, an aminoacetate group, an amidoxime group, an aminophosphate group, or any combination of these groups. The carrier of each of the chelating agent (A) and the chelating agent (B) may be silica, a silica component-containing substance, polystyrene, or crosslinked porous polystyrene. The solution may contain water or an organic solvent.

A metal adsorption agent including a chelating agent (A) and a chelating agent (B), wherein the chelating agent (A) is a metal adsorption agent containing a carrier having a glucamine-type functional group, and the chelating agent (B) is a metal adsorption agent containing a carrier having a thiol group, a thiourea group, an amino group, a triazabicyclodecene-inducing group, a thiouronium group, an imidazole group, a sulfonate group, a hydroxy group, an aminoacetate group, an amidoxime group, an aminophosphate group, or any combination of these groups. The carrier of each of the chelating agent (A) and the chelating agent (B) may be silica, a silica component-containing substance, polystyrene, or crosslinked porous polystyrene. The solution may contain water or an organic solvent.

The present invention relates to a method of concentrating an aqueous solution by low pressure under a zero osmotic pressure difference condition, and more particularly to a method of concentrating a solute-containing aqueous solution by low pressure under a zero osmotic pressure difference condition. When the method of the present invention is used, there are advantages in that energy consumption is low, and an aqueous solution can be concentrated until it can reach the maximum solute concentration or a solute concentration of 100%, without having to use an extraction solvent. In addition, there is an advantage in that the need to use a separate osmotic pressure draw solution is eliminated.

The present invention relates to a method of concentrating an aqueous solution by low pressure under a zero osmotic pressure difference condition, and more particularly to a method of concentrating a solute-containing aqueous solution by low pressure under a zero osmotic pressure difference condition. When the method of the present invention is used, there are advantages in that energy consumption is low, and an aqueous solution can be concentrated until it can reach the maximum solute concentration or a solute concentration of 100%, without having to use an extraction solvent. In addition, there is an advantage in that the need to use a separate osmotic pressure draw solution is eliminated.

Compositions and methods for treating waste water produced by copper mining operations are described herein. Slag from steel making operations and other industrial waste materials that include alkali metal and/or alkaline earth elements have been found to both raise pH of the waste water and also reduce arsenic content. Following such treatment the spent slag or industrial waste can be utilized as a source of valuable metals or incorporated into stabilized building materials.

Compositions and methods for treating waste water produced by copper mining operations are described herein. Slag from steel making operations and other industrial waste materials that include alkali metal and/or alkaline earth elements have been found to both raise pH of the waste water and also reduce arsenic content. Following such treatment the spent slag or industrial waste can be utilized as a source of valuable metals or incorporated into stabilized building materials.

An adsorbent and a method of preparing the adsorbent are described. The adsorbent includes a 2-anthracene ammonium magnetic ionic liquid (MIL), and a [FeCl.sub.4].sup. or a [CoCl.sub.3].sup. ion. The adsorbents, 2-anthracene ammonium tetrachloroferrate (III) ([2AA] FeCl.sub.4) and 2-anthracene ammonium trichlorocobaltate (II) ([2AA] CoCl.sub.3), are prepared by protonation of 2-aminoanthracene, followed by complexation with FeCl.sub.3/CoCl.sub.2. The adsorbent of the present disclosure is effective in removing contaminants such as heavy metal ions from an aqueous system in a cost-efficient and selective manner.

An adsorbent and a method of preparing the adsorbent are described. The adsorbent includes a 2-anthracene ammonium magnetic ionic liquid (MIL), and a [FeCl.sub.4].sup. or a [CoCl.sub.3].sup. ion. The adsorbents, 2-anthracene ammonium tetrachloroferrate (III) ([2AA] FeCl.sub.4) and 2-anthracene ammonium trichlorocobaltate (II) ([2AA] CoCl.sub.3), are prepared by protonation of 2-aminoanthracene, followed by complexation with FeCl.sub.3/CoCl.sub.2. The adsorbent of the present disclosure is effective in removing contaminants such as heavy metal ions from an aqueous system in a cost-efficient and selective manner.

The present disclosure relates to a filtration system and method for removing contaminants from liquids, including industrial waste liquid. Specifically, the present disclosure relates to a filtration system and process for removing heavy metals and other contaminants from liquids, such as wastewater from industrial and manufacturing processes, resulting in a useful purified liquid. The present disclosure further relates to a filtration system and method for removing commonly-found contaminants from ethanol, including high proof alcohol and wine.

The present disclosure relates to a filtration system and method for removing contaminants from liquids, including industrial waste liquid. Specifically, the present disclosure relates to a filtration system and process for removing heavy metals and other contaminants from liquids, such as wastewater from industrial and manufacturing processes, resulting in a useful purified liquid. The present disclosure further relates to a filtration system and method for removing commonly-found contaminants from ethanol, including high proof alcohol and wine.