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Main Title Removal of Phosphates by Sorption on Activated Alumina.
Author Purushothama, Krishnier ; Yu, Checkman M. ;
CORP Author Missouri Water Resources Research Center, Rolla.
Year Published 1970
Report Number DI-14-31-0001-3025; OWRR-A-029-MO; 03518,; A-029-MO(1)
Stock Number PB-196 872
Additional Subjects ( Water pollution ; Phosphates) ; ( Sewage treatment ; Phosphates) ; ( Chemical removal(Sewage treatment) ; Phosphates) ; ( Adsorption ; Phosphates) ; ( Adsorbants ; Alumina) ; Efficiency ; Industrial waste treatment ; Activated sludge process ; pH ; Ions ; Calcium ; Suspended sediments ; Materials recovery ; Water pollution control ; Chemical oxygen demand
Library Call Number Additional Info Location Last
NTIS  PB-196 872 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 86p
The purpose of the investigation was to study the removal of phosphorus from waste water by sorption on activated alumina, and determine the capacity of the alumina to sorb phosphates in the presence of other ions, the effect of the influent flow rate and phosphorus concentration on the efficiency of the process, and the feasibility of regeneration of the used alumina. The studies were conducted using deionized and tap water to which inorganic phosphate had been added, and secondary effluent from bench-scale activated sludge units. They involved batch tests employing three types of activated alumina, ALCOA XM (minus 325 mesh), F-1 (minus 100 mesh), and F-1 (28-48 mesh), and continuous-flow tests carried out in three specially designed glass sorption columns using the F-1 (28-48) ALUMINA. Activated alumina was found to have a greater capacity for removing phosphorus in the presence of hardness-causing ions, and each type of alumina had a different capacity for each test water used. The fraction of phosphorus removed by each alumina decreased when the initial phosphorus concentration in the test water increased. The influent flow rate inversely affected the phosphorus loading capacity of the alumina, and the used aluminas could be effectively regenerated with a 2M sodium hydroxide solution along. (Author)