| Main Title |
Selenium removal from drinking water by ion exchange / |
| Author |
Maneval, James E. ;
Klein, G. ;
Sinkovic, J.
|
| Other Authors |
|
| CORP Author |
California Univ., Richmond. Water Thermal and Chemical Technology Center.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. |
| Publisher |
Water Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1985 |
| Report Number |
EPA/600/2-85/074 |
| Stock Number |
PB85-216653 |
| OCLC Number |
14065583 |
| Subjects |
Water--Purification--Ion exchange process ;
Selenium
|
| Additional Subjects |
Selenium ;
Water treatment ;
Ion exchanging ;
Potable water ;
Chemical equilibrium ;
Substitutes ;
Anion exchanging ;
Isotherms ;
Chemical properties
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ELBD RPS |
EPA 600-2-85-074 |
repository copy |
AWBERC Library/Cincinnati,OH |
03/07/2016 |
| NTIS |
PB85-216653 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ix, 62 pages : illustrations ; 28 cm. |
| Abstract |
Strong-base anion exchangers were shown to remove selenate and selenite ions from drinking water. Because selenium species are usually present at low concentrations, the efficiency of removal is controlled by the concentration of the common drinking water anions, the most important being sulfate. The ion-exchange behavior of selenate was found to be identical to that of sulfate, while the behavior of selenite was found to be similar to that of nitrate. The local-equilibrium theory for ion-exchange columns produced good results in predicting selenium removal capacities. Two alternative methods of selenium removal were also investigated. Attempts to find reagents, compatible with water treatment, that were capable of reducing selenate to selenite (for which there are selective removal methods) were unsuccessful. Screening experiments showed that a weak-acid cation exchanger in the ferric form selectively removed selenite from water containing the common drinking-water anions. |
| Notes |
June 1985. Includes bibliographical references. |
