Remediation of PAHs, NSO-Heterocycles, and Related Aromatic Compounds in Permeable Reactive Barriers Using Activated Carbon - Permeable Reactive Barrier: Sustainable Groundwater Remediation - page 228

TABLE 11.3 (continued)
Freundlich Parameters (log ( q ) = log ( K ) + n log ( c )) Obtained for the Activated Carbon Epibon Y12×40 (Sieved 63-125 μm)

Compound AC Lot Analytics K ±σ N ±σ r 2 N c 0 /mg L −1

2-Methylquinoline (buffer pH = 2.9) New HPLC 48 2 0.20 0.02 0.9333 13 16.35
2-Methylquinoline (buffer pH = 7) New HPLC 145 6 0.23 0.02 0.9146 11 24.22
2-Methylquinoline (in water) New HPLC 167 8 0.19 0.01 0.9562 11 13.02
Phenanthridine (buffer pH = 7.0) New HPLC 171 15 0.29 0.03 0.9145 11 2.00
Phenanthridine (buffer pH = 2.5) New HPLC 144 3 0.11 0.01 0.8829 10 9.37
Acridine New HPLC 298 42 0.26 0.04 0.8615 8 13.29
9-Methylacridine New HPLC 427 20 0.12 0.01 0.9497 13 2.49
Carbazole New HPLC 319 19 0.22 0.01 0.9473 16 0.58/0.66
Note: Measurements were performed in deionized water and in buffer mixtures; temperature for all measurements T ± σ = 20 ± 3°C.
Standard deviations are errors from linear regressions performed. AC lot = two lots obtained from the supplier Donau Carbon were
used (old lot 1 kg; (April 2006), new lot 20 kg (July 2008); Analytics = analytical method used; K (unit mg 1− n g −1 L n ) and n (without a unit)
are the Freundlich parameters with standard deviations; r 2 = goodness of it of the linear regression from log ( q ) versus log ( c );
N = number of data points; and c 0 = start concentration in mg/L.