| Main Title |
Phosphate precipitation with ferrous iron / |
| Author |
Ghassemi, Masood,
|
| Other Authors |
|
| Publisher |
United States Environmental Protection Agency, Office of Research and Monitoring, |
| Year Published |
1971 |
| Report Number |
EPA17010-EKI-09/71; W7209388; EPA 950/R-71-004 |
| OCLC Number |
00489175 |
| Subjects |
Sewage--Purification ;
Precipitation (Chemistry) ;
Phosphates ;
Ferrous salts ;
Water--Waste
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 950-R-71-004 |
|
Headquarters Library/Washington,DC |
10/31/2013 |
| ELBD ARCHIVE |
EPA 950-R-71-004 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 950-R-71-004 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/17/2014 |
|
| Collation |
viii, 64 pages : illustrations, figures, tables ; 28 cm |
| Notes |
"September 1971." Includes bibliographical references (pages 63-64). U.S. EPA Contract No. Contract Number: 14-12-817. |
| Contents Notes |
Of a number of methods available for phosphate removal from waste water, chemical precipitation (often called coagulation) using aluminum, ferric iron, ferrous iron and lime is considered to be the most economical. The objective of the present study has been two-fold: To evaluate the effects of pH and reactant concentration on the rate and efficiency of phosphate removal from synthetic and secondary effluent wastewaters and on the nature of the precipitates formed; and to compare the data on the Fe(II)-phosphate precipitation system with the available data for Fe(III)- and Al(III)-phosphate systems. Most of the experiments in the study were conducted on pure orthophosphate solutions and in the absence of dissolved oxygen. Only a limited number of tests were made of the use of ferrous iron for orthophosphate removal from wastewaters containing dissolved oxygen. |
