1. The organic carbon adsorption data given below were obtained using two activated carbon samples, A and B. In each case 1.0 g of carbon and a liquid volume of 1.0 L were used. Determine the appropriate model to be used in each case. Initial Concentration Equilibrium Concentration, g/m3
g/m3 A B
1.0 0.010 0.053
2.0 0.020 0.124
4.0 0.040 0.290
8.0 0.081 0.677
16.0 0.165 1.58
32.0 0.344 3.67
64.0 0.751 8.52
128.0 1.843 19.66
2. A secondary wastewater effluent having a total organic carbon (TOC) concentration of 12 g/m3 is to be treated further by activated carbon adsorption. The objective is produce water having no more than 1.0 g/m3 TOC. Determine the amount of a carbon that would be necessary per cubic meter of secondary effluent if the carbon characteristics were those of (a) carbon A in Part 1 and (b) carbon B in Part 1. Assume the system is a batch process.