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Trial Number 1

Trial Purpose:

To compare surfactant levels

Date Run:

07/20/1999

Experiment Procedure:

To compare surfactant levels of a cleaning solution before & after passing through separation equipment (Aqueous Recovery Resources, Inc., Suparator, oil-water separator) and a virgin sample of the solution.
Three titrations were per sample were tested for nonionic surfactant content using Bama Chem Nonionic Surfactant Kit. The general procedure is as follows:
1. ADD APPROXIMATELY 25 ML OF WATER TO MIXING VIAL
2. ADD 8 DROPS OF INDICATOR SOLUTION TO VIAL. COLOR SHOULD BE GREEN.
3. ADD 15 DROPS OF 20% SULFURIC ACID TO VIAL (20 DROPS IF STRONGLY ALKALINE DETERGENTS ARE TESTED) AND SWIRL. COLOR SHOULD NOW BE PURPLE. (CAUTION: HANDLE THIS SOLUTION WITH CARE. IT IS CORROSIVE AND MAY CAUSE BURNS.)
4. ADD 0.5ML OF NONIONIC DETERGENT SOLUTION TO VIAL AND SWIRL, COLOR SHOULD NOW TURN BACK TO GREEN OR YELLOW-GREEN.
5. ADD TITRATING SOLUTION DROPWISE WHILE COUNTING UNTIL THE COLOR CHANGES TO A WINE-RED OR PURPLE. (ABOUT HALFWAY TO THE ENDPOINT THE COLOR WILL BE TAN OR LIGHT BROWN). NOTE THE NUMBER OF DROPS NEEDED AND MULTIPLY BY 0.5 TO GET % BY VOLUME OF NONIONIC DETERGENT. EACH DROP IS EQUIVALENT TO 0.0028 GRAMS OF SURFACTANT.
CHOOSE SAMPLE SIZE THAT WILL REQUIRE 10-20 DROPS OF TITRANT FOR BETTER ACCURACY. FOR VERY CONCENTRATED SURFACTANT SOLUTIONS USE A 0.10ML SAMPLE SO AS TO CONSERVE REAGENTS. FOR A 0.10ML SAMPLE USE A FACTOR OF 2.5.
FOR WEAKER SOLUTIONS:
1.00ML SAMPLE USE A FACTOR OF 0.25
10.00ML SAMPLE USE A FACTOR OF 0.025
100.00ML SAMPLE USE A FACTOR OF 0.0025
SOME INTERFERENCES - ACID SOLUBLE ANIONIC DETERGENTS CATIONIC DETERGENTS SOME AMINES STRONG OXIDIZERS SUCH AS HYPOCHLORITES, NITRITES, ETC. HIGHLY CONCENTRATED DYES

The chemistries used were:

SITE    CLEANER MFR PRODUCT Notes:
Racine Howard Supply Co LT-5-100 Soak Cleaner   10 oz/gal
Racine Howard Supply Co LT-5-100 Soak Cleaner   Influent to Suparator
Racine Howard Supply Co LT-5-100 Soak Cleaner   Effluent from Suparator

Trial Results:

The solution appeared to have a vastly increased level of surfactant after passing through the oil-
water separator. Table 1 list the values obtained for each stage of the cleaner.
Table 1. Surfactant Levels

Site: Racine
Cleaner Influent Effluent
8.33 13.33 46.67
13.33 13.33 53.33
13.33 16.67 43.33
11.67 14.44 47.78

Table 2.  Data from each stage of solution

Table 2. Data from each stage of solution  
Client EPA/Superator Chris Underwood  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Cleaner  
Product Name LT-5-100 Soak Cleaner  
Concentration Used 7.5 %
Drops Required 6  
Sample Size 1.5 mL
Wt of Surfactant 0.0168 grams
drop * f 1 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 13.33  
Mfr Racine Cleaner  
Product    
Conc. % 7.5  
Volume 1.5  
Wt of Surf 0.0168 in Sample
% Surf. 1 in Sample
Total Surf % 13.33  
     
Experimenter Marshall  
Date 7/20/99  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Influent  
Product Name LT-5-100 Soak Cleaner  
Concentration Used 7.5 %
Drops Required 4  
Sample Size 1 mL
Wt of Surfactant 0.0112 grams
drop * f 1 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 13.33  
Mfr Racine Influent  
Product LT-5-100 Soak Cleaner  
Conc. % 7.5  
Volume 1  
Wt of Surf 0.0112 in Sample
% Surf. 1 in Sample
Total Surf % 13.33 Full strength
     
Experimenter Marshall  
Date 7/20/99  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Influent  
Product Name LT-5-100 Soak Cleaner  
Concentration Used 7.5 %
Drops Required 4  
Sample Size 1 mL
Wt of Surfactant 0.0112 grams
drop * f 1 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 13.33  
Mfr Racine Influent  
Product LT-5-100 Soak Cleaner  
Conc. % 7.5  
Volume 1  
Wt of Surf 0.0112 in Sample
% Surf. 1 in Sample
Total Surf % 13.33 Full strength
     
Experimenter Marshall  
Date 7/20/99  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Influent  
Product Name LT-5-100 Soak Cleaner  
Concentration Used 7.5 %
Drops Required 5  
Sample Size 1 mL
Wt of Surfactant 0.014 grams
drop * f 1.25 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 16.67  
Mfr Racine Influent  
Product LT-5-100 Soak Cleaner  
Conc. % 7.5  
Volume 1 mL
Wt of Surf 0.014 in Sample
% Surf. 1.25 in Sample
Total Surf % 16.67 Full strength
     
Experimenter Marshall  
Date 7/20/99  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Effluent  
Product Name LT-5-100 Soak Cleaner  
Concentration Used 7.5 %
Drops Required 16  
Sample Size 1 mL
Wt of Surfactant 0.0448 grams
drop * f 4 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 53.33  
Mfr Racine Effluent  
Product LT-5-100 Soak Cleaner  
Conc. % 7.5  
Volume 1 ml
Wt of Surf 0.0448 in Sample
% Surf. 4 in Sample
Total Surf % 53.33 Full strength
     
Experimenter Marshall  
Date 7/20/99  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Effluent  
Product Name LT-5-100 Soak Cleaner  
Concentration Used 7.5 %
Drops Required 14  
Sample Size 1 mL
Wt of Surfactant 0.0392 grams
drop * f 3.5 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 46.67  
Mfr Racine Effluent  
Product LT-5-100 Soak Cleaner  
Conc. % 7.5  
Volume 1  
Wt of Surf 0.0392 in Sample
% Surf. 3.5 in Sample
Total Surf % 46.67 Full strength
     
Experimenter Marshall  
Date 7/20/99  
Client Type Consultant  
SCL # 99-7104-02-5  
Test Type Nonionic  
Cleaner Mfr Racine Effluent  
Product Name LT-5-100 Soak Cleaner  
Concentration Used  7.5 %
Drops Required 13  
Sample Size 1 mL
Wt of Surfactant 0.0364 grams
drop * f 3.25 % by volume of nonionic surfactant
Dilution correction 13.33  
Total Surfactant 43.33  
Mfr Racine Effluent  
Product LT-5-100 Soak Cleaner  
Conc. % 7.5  
Volume 1  
Wt of Surf 0.0364 in Sample
% Surf. 3.25 in Sample
Total Surf % 43.33 Full

Success Rating:

A cleanliness study, addressing only various analytical techniques.

Conclusion:

The concentration of surfactant in the cleaning solutions were not decreased by passing through the Superator Oil-Water separator.

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