FIELD: treatment of drinking water; catalytic cleaning of natural water from dissolved iron.
SUBSTANCE: proposed catalyst is used for oxidation of bivalent iron dissolved in natural water; catalyst is based on silica gel and is thermo-modified by manganese dioxide MnO2; modification is performed by calcination of freshly formed silica gel impregnated with manganese nitrate at 400°C; content of MnO2 in granulated catalyst ranges from 6.5 to 13 mass-%.
EFFECT: increased activity of catalyst; reduction of emission of manganese from catalyst into water; enhanced efficiency in de-ironing water at high content of bivalent iron.
3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF TREATING NATURAL WATERS TO REMOVE IRON | 1999 |
|
RU2179956C2 |
| FILTERING MATERIAL FOR TREATMENT OF WATER FROM MANGANESE AND IRON, METHOD FOR IT PREPARING AND METHOD FOR TREATMENT OF WATER FROM MANGANESE AND IRON | 2004 |
|
RU2275335C2 |
| METHOD OF NATURAL WATER PURIFICATION FROM IRON | 2008 |
|
RU2378203C2 |
| CATALYTIC SORBENT FOR PURIFICATION OF WATER MEDIUM | 2016 |
|
RU2617492C1 |
| METHOD OF PREPARING SORBENT FOR TREATING WATER AND AQUEOUS SOLUTIONS TO REMOVE IRON AND MANGANESE COMPOUNDS | 2003 |
|
RU2241535C1 |
| FILTRATION MATERIAL FOR CLEANING WATER OF IRON, MANGANESE AND HYDROGEN SULPHIDE AND METHOD OF ITS PRODUCTION | 2010 |
|
RU2447922C1 |
| METHOD OF PURIFICATION OF SEWAGE AND NATURAL WATER FROM IONS OF SULFATE BIVALENT IRON | 2006 |
|
RU2329955C2 |
| FILTERING MATERIAL FOR DRINKING WATER PURIFICATION | 2014 |
|
RU2574754C1 |
| METHOD FOR PRODUCING FILTERING MATERIAL INTENDED TO REMOVE MANGANESE IONS FROM WATER | 1995 |
|
RU2091158C1 |
| METHOD FOR EXTRACTION OF PRECIOUS METALS OF ORE AND MATERIALS | 1996 |
|
RU2087568C1 |
