CONTAMINANT REMOVAL FROM WATER USING POLYELECTROLYTE COATED FLY ASH
First Claim
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1. A polyelectrolyte coated fly ash, comprising:
- an acid-treated fly ash particle;
a first layer of a positive polyelectrolyte, the first layer in contact with the acid-treated fly ash particle; and
a second layer of a negative polyelectrolyte, the second layer in contact with the first layer,wherein the polyelectrolyte coated fly ash is in the form of porous particles having an average particle diameter of 15-100 μ
m and an average pore diameter of 0.5-10 μ
m.
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Abstract
A polyelectrolyte coated fly ash is described with a method of making and a method of using for the adsorption of a contaminant from a solution. The polyelectrolyte coated fly ash may be made by treating the oil fly ash with acid, and then contacting the product with a positive polyelectrolyte to create a first polyelectrolyte layer, and then with a negative polyelectrolyte to create a negative polyelectrolyte layer. The resulting polyelectrolyte coated fly ash quickly adsorbs contaminants from solution, and may be cleaned and reused.
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20 Claims
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1. A polyelectrolyte coated fly ash, comprising:
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an acid-treated fly ash particle; a first layer of a positive polyelectrolyte, the first layer in contact with the acid-treated fly ash particle; and a second layer of a negative polyelectrolyte, the second layer in contact with the first layer, wherein the polyelectrolyte coated fly ash is in the form of porous particles having an average particle diameter of 15-100 μ
m and an average pore diameter of 0.5-10 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification