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Problem statement: A phenolic wastewater that has phenol concentration of 400 mg/L as TOC is to be treated by a fixed-bed granular carbon adsorption column

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Problem statement: A phenolic wastewater that has phenol concentration of 400 mg/L as TOC is to be treated by a fixed-bed granular carbon adsorption column for a wastewater flow of 227100 L/d, and the allowable effluent concentration, Ca, is 35 mg/L as TOC. A breakthrough curve has been obtained from an experimental pilot column operated at 1.67 BV/h. Other data concerning the pilot column are as follows: Inside diameter = 9.5 cm, length = 1.04 m, Mass of carbon = 2.98 kg, liquid flow rate = 17.42 L/h , Unit liquid flow rate = 0.679 L/s.m2, and the packed carbon density = 401 kg/m3. The design column is to have a unit liquid flow rate of 2.38 L/s.m2, and the allowable breakthrough volume is 850 m3. Using the kinetic approach for design, determine: = = . The carbon required for the design column, kg. The diameter and height of the design column, m. . V C (L) | (mg/L) 15 12 C/Co Colc 0.030 33.333 0.040 25.000 0.060 16.667 Co/C- 1 32.333 24.000 In(Co/C - 1) 3.476 3.178 2.752 16 69 159 24 15.667 273 16 0.040 25.000 24.000 3.178 3.178 379 16 0.040 25.000 24.000 681 20 0.050 20.000 19.000 2.944 965 28 0.070 14.286 2.587 1105 32 0.080 12.500 13.286 11.500 2.883 0.896 103 1215 1287 0.258 0.528 3.883 1.896 2.442 1.059 -0.110 211 1408 350 0.875 1.143 0.143 -1.946 1548 400 1.000 1.000 0.000

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