초록

A method for removing arsenic from water by contacting water with a strong base anion exchange resin comprising at least one metal ion or metal-containing ion whose arsenate salt has a Ksp no greater than 10-5, provided that the metal is not zirconium.

대표청구항 ▼

The invention claimed is: 1. A method for removing arsenic from water by contacting water with an acrylic gel which comprisies an amine substituent of structure description="In-line Formulae" end="lead"R1N{(CH2)xN(R2)}2 (CH2)yNR3R4 description="In-line Formulae" end="tail" where an amine nitrog

The invention claimed is: 1. A method for removing arsenic from water by contacting water with an acrylic gel which comprisies an amine substituent of structure description="In-line Formulae" end="lead"R1N{(CH2)xN(R2)}2 (CH2)yNR3R4 description="In-line Formulae" end="tail" where an amine nitrogen bearing substituent R1 is attached via an amide bond with an acrylic carbonyl group or via a C-N bond to a CH2 group on the acrylic gel; R1 and R2=H, methyl or ehtyl; x and y=1-4, z=0-2 and R3 and R4=methyl, ethyl, propyl or butyl; wherein iron in its hydrous oxide form is entrapped in the acylic gel; to obtain an arsenic bound resin. 2. The method of claim 1 in which the amine nitrogen bearing substituent R1 is attached via an amide bond with an acrylic carbonyl group; R1=H or methyl; z=0; and R3 and R4=methyl or ethyl. 3. The method of claim 2 in which R1=H; y=3; and R3 and R4=methyl. 4. The method of claim 3 in which the acrylic gel is a copolymer of methyl acrylate and divinylbenzene with 2-5% divinylbenzene residues. 5. The method of claim 1 in which the acrylic gel is a copolymer of methyl acrylate and divinylbenzene with 2-5% divinylbenzene residues.