Disclosed is a filter for a water-purification device, the filter including a filter housing having a water inlet and a water outlet defined therein; and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet, wherein the filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other. Further, a water-purification device including the filter is disclosed.

Disclosed is a filter for a water-purification device, the filter including a filter housing having a water inlet and a water outlet defined therein; and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet, wherein the filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other. Further, a water-purification device including the filter is disclosed.

A method for producing an ion exchange resin. The method comprises steps of: (a) providing a basic ion exchange resin in the acidic form which comprises amino polyol groups and has a volume % swell from 15 to 30% upon conversion from the basic form to the acidic form, and (b) washing the resin with water or aqueous acid.

A method for producing an ion exchange resin. The method comprises steps of: (a) providing a basic ion exchange resin in the acidic form which comprises amino polyol groups and has a volume % swell from 15 to 30% upon conversion from the basic form to the acidic form, and (b) washing the resin with water or aqueous acid.

Disclosed is a filter for a water-purification device, the filter including a filter housing having a water inlet and a water outlet defined therein; and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet, wherein the filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other. Further, a water-purification device including the filter is disclosed.

Disclosed is a filter for a water-purification device, the filter including a filter housing having a water inlet and a water outlet defined therein; and a filter member disposed in the filter housing to purify water introduced through the inlet and supply the purified water to the outlet, wherein the filter member includes a carbon block produced by mixing 40 to 50% by weight of titanium oxide, 30 to 40% by weight of activated carbon, and 18 to 23% by weight of binder with each other. Further, a water-purification device including the filter is disclosed.

The present invention relates to separation and recovery of metals from ground alkaline batteries using anode mud (zinc electrolysis waste) and other manganese and zinc containing materials. The material commonly referred to as alkaline black (AKB) is solubilized into sulfate media and the manganese to zinc ratio is adjusted. The solution containing metals is processed using crystallization and ion exchange methods to produce manganese sulfate and zinc sulfate solutions for several possible applications.

The present invention relates to separation and recovery of metals from ground alkaline batteries using anode mud (zinc electrolysis waste) and other manganese and zinc containing materials. The material commonly referred to as alkaline black (AKB) is solubilized into sulfate media and the manganese to zinc ratio is adjusted. The solution containing metals is processed using crystallization and ion exchange methods to produce manganese sulfate and zinc sulfate solutions for several possible applications.

Proposed is a method of manufacturing an inorganic ion exchanger with improved selectivity for lithium. The exchanger is represented by the following general formula: H.sub.aNbO.sub.(2.5+0.5.Math.a).Math.bLi.sub.2O.Math.cWO.sub.3.Math.dH.sub.2O, wherein “a” is a number ranging from 0.5 to 2.0, “b” is a number ranging from 0.01 to 0.5, “c” is a number ranging from 0.01 to 0.2, and “d” is a number ranging from 0.1 to 2.0. The method consists of: interacting a soluble niobate (V) with an acid to form a hydrated niobium (V) oxide and a hydrated tungsten (VI) oxide, which co-precipitate and form a mixed hydrated niobium (V) and tungsten (VI) oxide; granulating the obtained product; converting the granulated product into a lithium form; calcining the lithium form to obtain a mixed granulated tripled lithium, niobium (V) and tungsten (VI) oxide, and converting the lithium-form into an H-form of the inorganic ion-exchanger by treating it with an acid solution.

Proposed is a method of manufacturing an inorganic ion exchanger with improved selectivity for lithium. The exchanger is represented by the following general formula: H.sub.aNbO.sub.(2.5+0.5.Math.a).Math.bLi.sub.2O.Math.cWO.sub.3.Math.dH.sub.2O, wherein “a” is a number ranging from 0.5 to 2.0, “b” is a number ranging from 0.01 to 0.5, “c” is a number ranging from 0.01 to 0.2, and “d” is a number ranging from 0.1 to 2.0. The method consists of: interacting a soluble niobate (V) with an acid to form a hydrated niobium (V) oxide and a hydrated tungsten (VI) oxide, which co-precipitate and form a mixed hydrated niobium (V) and tungsten (VI) oxide; granulating the obtained product; converting the granulated product into a lithium form; calcining the lithium form to obtain a mixed granulated tripled lithium, niobium (V) and tungsten (VI) oxide, and converting the lithium-form into an H-form of the inorganic ion-exchanger by treating it with an acid solution.