Record Display for the EPA National Library Catalog


Main Title Phosphate precipitation with ferrous iron /
Author Ghassemi, Masood,
Other Authors
Author Title of a Work
Recht, Howard L.
Recht, Howard Leonard
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
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 950-R-71-004 Headquarters Library/Washington,DC 03/10/2011
EJBD  EPA 950-R-71-004 Headquarters Library/Washington,DC 10/31/2013
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
"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.