Record Display for the EPA National Library Catalog


Main Title Chemical Characteristics of Organic Color in Water.
Author Cristma, Russell f. ; Nakamur, Mesahisa ; William, Warren ;
CORP Author Washington Univ., Seattle. Dept. of Civil Engineering.
Year Published 1970
Report Number FWQA-16020-DKW; 08396,; 16020-DKW-09/70
Stock Number PB-199 707
Additional Subjects ( Water pollution ; Colors(Materials)) ; ( Chemical removal(Water treatment) ; Colors(Materials)) ; ( Coagulation ; Chemical removal(Water treatment)) ; Precipitation(Chemistry) ; Colloids ; pH ; Organic compounds ; Aluminum inorganic compounds ; Thorium inorganic compounds ; Lanthanum compounds ; Computer programs ; Carbon ; Electrochemistry ; Chemical equilibrium ; Adsorption ;
Library Call Number Additional Info Location Last
NTIS  PB-199 707 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 95p
The colloid charge titration technique described by Kawamura and Tanaka, was used to measure the charge on color-aluminum, color-thorium, and color-lanthanum dispersions. This method was able to measure the charge on colloids which were too small to be seen, thus replacing the Briggs microelectrophoresis cell technique. Tests were conducted using a Lumetron Model 402E filter photometer to obtain data points of pH vs % transmission; and pH vs total organic carbon. A computer program was designed to perform a least squares analysis on all the data points to determine the shape of the curve, and the curves were then plotted on a plotter. The program which was developed will analyze as many as 15 sets of data. Analyses made on data taken from actual colored influent will provide operators with plots which show the optimum operating conditions for a particular color removal problem. (WRSIC abstract) (Lowry-Texas)