1、 FORD LABORATORY TEST METHOD AZ 003-05 Date Action Revisions 2000 08 30 Revised Editorial no technical change A. Cockman 2000 05 22 Editorial no technical change A. Cockman 1992 03 19 Printed copies are uncontrolled Page 1 of 5 Copyright 2000, Ford Global Technologies, Inc. ACTIVITY OF ACTIVATED CAR
2、BON Application This is a method to determine the percentage of carbon tetrachloride absorbed by activated carbon. Principle Information Dry air saturated with carbon tetrachloride vapor at 0 C is passed through the sample until there is no further increase in weight. the percentage of carbon tetrac
3、hloride absorbed by the sample at saturation is its activity. Apparatus Required The apparatus is shown diagrammatically in figures 1 and 2. It consists of the following: Pressure Regulator - A Reduces air line pressure to 34.5 kPa. Type 11 - 0004. Source: C. A. Norgen Company 5400 S. Delaware Stree
4、t Littleton, Colorado 80120 or equivalent. Graduate - B 100 mL. Catalog No. 8 - 553B, Fisher Scientific or equivalent. Aspirator Bottle Three 2 liter, (C) Activated Carbon, (D) Calcium Chloride, (D) Calcium Chloride. Catalog No. 2 - 972E, Fisher Scientific or equivalent. Bubbling Bottle - E Two 500
5、mL, for carbon tetrachloride, Catalog No. 3 - 036C, Fisher Scientific or equivalent. Insulated Box - F, J Two; these may be ordinary insulated picnic boxes. Needle Valve - G Stainless steel, for air control, Catalog No. 10 - 583, Fisher Scientific or equivalent. FORD LABORATORY TEST METHOD AZ 003-05
6、 Page 2 of 5 Copyright 2000, F ord Global Technologies, Inc. Flowmeter U Tube - H Catalog No. 11 - 286, Fisher Scientific or equivalent. Activity Tube I The carbon sample tube shown in figure 2 is a hard glass, “U“ shaped tube, 190 mm long, having an inside diameter in the larger leg of the tube of
7、14.1 mm. A perforated porcelain disc is fused to the wall of this tube at the lower end appr oximately 40 mm from the bottom, and a line is marked on the tube exactly 100 mm above the surface of the disc. When filled to the 100 mm mark, the tube holds 15.7 mL of the sample. This part must be custom
8、made. Source: Leonard Glass Blowing 867 McKinle y Avenue Columbus Ohio 42322 or equivalent. Laboratory Balance Accurate to 0.01 gram Rubber Stoppers One No. 5 1/2, 1 hole, No. 14 - 135 Fisher Scientific or equivalent. Three No. 8, 1 hole, No. 14 - 135 Fisher Scientific or equivalent. One No. 1, 1 ho
9、le, N o. 14 - 135 Fisher Scientific or equivalent. Capillary Tubing Fisher Scientific or equivalent. Rubber Tubing 1.0 - 4.0 m lengths, Catalog No. 14 - 15, Fisher Scientific or equivalent. Oven Capable of maintaining temperature of 150 +/ - 2 C. Materials Required Glass Wool 0.9 kg, medium, Catalog
10、 No. 11 - 390, Fisher Scientific or equivalent. Activated Carbon 2.3 kg No. 6 - 8 mesh Calcium Chloride 6.3 kg No. 8 mesh - Reagent grade Carbon Tetrachloride Refer to Industrial Hygiene for health and safety comments. Mercury Refer to Industrial Hygiene Bulletin No. 17 for health and safety comment
11、s. FORD LABORATORY TEST METHOD AZ 003-05 Page 3 of 5 Copyright 2000, F ord Global Technologies, Inc. Ice All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to testing and tested u
12、nder the same conditions unless otherwise specified. Procedure 1. Dry activated carbon sample to be tested for 6 h minimum at 150 +/ - 2 C. 2. Fill aspirator bottle with No. 6 - 8 mesh activated carbon. Note: This wil l remove oil and other vapors from the air stream. 3. Fill two aspirator bottles m
13、arked “D“ with No. 8 mesh calcium chloride and glass wool. 4. Pour carbon tetrachloride into bubbling bottles. 5. Put cracked ice into insulated box (F). 6. Adjust water in box (J) holding carbon sample tube so that it can be held to 25 C. 7. Weigh activity tube and record weight. 8. Pour ten cm 3 o
14、f sample of activated carbon which has been dried at 150 +/ - 2 C for 6 h in the activity tube and weigh and record weight. 9. Hook activity tube containing sample into the system. 10. Start the air into the system at 34.5 kPa and into graduate (B) containing 50 mm of mercury. This saturates the air
15、 with carbon tetrachloride. 11. Pass the saturated air through the activate d carbon sample at a velocity of 450 - 500 centimeters per minute linear flow. 12. Maintain the sample of activated carbon at 25 C throughout the test. 13. Pass the saturated air through the sample for 60 minutes, then rewei
16、gh. 14. After the first 60 m inute interval, connect the sample tube to the apparatus for 10 minutes and reweigh. Repeat until there is no further increase in weight. Note: Usually there is no increase in weight after the first 60 minutes. Weight of tube and sample minus weight of tube equal the wei
17、ght of the sample. Total increase in weight of sample divided by the original weight of sample x 100 is the activity, or percent. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly . Each party is responsible for determining proper use and handling in its facilities. FORD LABORATORY TEST METHOD AZ 003-05 Page 4 of 5 Copyright 2000, F ord Global Technologies, Inc. ACTIVITY OF ACTIVATED CARBON Figure 1 FORD LABORATORY TEST METHOD AZ 003-05 Page 5 of 5 Copyright 2000, F ord Global Technologies, Inc. ACTIVITY OF ACTIVATED CARBON
