Catalytic Sorption of (Chloro)Benzene and Naphthalene in Aqueous Solutions by Granular Activated Carbon Supported Bimetallic Iron and Palladium Nanoparticles

Table 1

Adsorption parameters of benzene, chlorobenzene, and naphthalene on GAC and Fe/Pd/GAC.

Contaminant	Carbon	Freundlich adsorption coefficient, log𝐾𝐹 ((μg/kg)/(μg/L)^𝑛)	Exponential term, 𝑛  (−)	Volume occupied by adsorbed contaminant, 𝑉contaminant  (mL g^−1)	Octanol-water partition coefficient, 𝐾ow	Effective partitioning coefficient, 𝐾𝐷  (L kg^−1)
Benzene	GAC	6.11	0.39	0.89	2.13	2.97 × 10^6
Chlorobenzene	GAC	7.11	0.27	0.76	2.84	8.25 × 10^5
Naphthalene	GAC	7.54	0.21	0.77	3.34	*
Benzene	Fe/Pd/GAC	4.53	0.4	0.75	2.13	650
Chlorobenzene	Fe/Pd/GAC	5.47	0.31	0.66	2.84	5640
Naphthalene	Fe/Pd/GAC	5.22	0.63	0.63	3.34	1.91 × 10^5

∗Due to high sorbent concentration, no naphthalene was detected in the equilibrium solution.