AWWA B600:2016 pdf download.Powdered Activated Carbon
4.2.1 Moisture. Temoisture content of PAC shall not exceed 8 percent, by weight, of the listed container contents as packaged or at the time of shipment by the supplier in the case of a bulk shipment. Te moisture content shall be deter- mined according to Sec. 5.2.3. Note: Because ambient conditions may be beyond the control of the supplier, the moisture content of activated carbon may increase during bulk shipment. A moisture content exceeding 8 percent is permitted in the reference sample that is collected after receipt of the shipment (Sec. III.A [12] and Sec. 5.3.1).
4.2.2 Apparent density. Te apparent density of the activated carbon shall not be less than 0.2 g/cc nor greater than 0.75 g/cc, as determined according to Sec. 5.2.4.
4.2.3 Particle-size distribution. Te particle-size distribution shall be determined according to Sec. 5.2.5. Unless otherwise specifed by the purchaser, not less than 99 percent of the activated carbon shall pass a No. 100 sieve, not less than 95 percent shall pass a No. 200 sieve, and not less than 90 percent shall pass a No. 325 sieve, unless the activated carbon is wood-based. For wood-based acti- vated carbons, not less than 95 percent of the activated carbon shall pass a No. 100 sieve, not less than 85 percent shall pass a No. 200 sieve, and not less than 60 per- cent shall pass a No. 325 sieve. Note: A purchaser who prefers to use a coarser-ground material to prevent flter penetration and has a feed system capable of handling the larger material should modify the particle-size distribution listed previously as required.
4.2.4 Iodine number. Te iodine number of the PAC shall be determined according to Sec. 5.2.6. Unless otherwise specifed by the purchaser, the iodine number of the PAC shall not be less than 500 mg/g.
4.2.5 Additional tests. If the purchaser desires to use additional tests to measure adsorptive capacity, the purchaser shall notify the supplier of which type of shipment sampling will be required (Sec. III.A). Te purchase documents should allow adequate time to complete testing and confrm analysis.AWWA B600 pdf download.