This work focuses on the remediation of polycyclic
aromatic hydrocarbons (PAHs)-contaminated soil via Fenton
treatment coupled with novel chelating agent (CA). The feasibility of
chelated modified Fenton (MF) treatment to promote PAH oxidation
in artificially contaminated soils was investigated in laboratory scale
batch experiments at natural pH. The effects of adding inorganic and
organic CA are discussed. Experiments using different iron catalyst
to CA ratios were conducted, resulting in hydrogen peroxide: soil:
iron: CA weight ratios that varied from 0.049: 1: 0.072: 0.008 to
0.049: 1: 0.072: 0.067. The results revealed that (1) inorganic CA
could provide much higher PAH removal efficiency and (2) most of
the proposed CAs were more efficient than commonly utilised CAs
even at mild ratio. This work highlights the potential of novel
chelating agents in maintaining a suitable environment throughout
the Fenton treatment, particularly in soils with high buffer capacity.
[1] S. Lewis, A. Lynch, L. Bachas, S. Hampson, L. Ormsbee, and D.
Bhattacharyya, "Chelate-modified Fenton reaction for the degradation
of trichloroethylene in aqueous and two-phase systems," Environ. Eng.
Sci, vol. 26, pp. 849-859, 2009.
[2] K. Nam, W. Rodriguez, and J. J. Kukor, "Enhanced degradation of
polycyclic aromatic hydrocarbons by biodegradation combined with a
modified Fenton reaction," Chemosphere, vol. 45, pp. 11-20, 2001.
[3] Patiram, Brajendra, T.N.S. Azad, and T. Ramesh, Soil Testing and
Analysis: Plant, Water and Pesticide Residues. India: New India
Publishing Agency, 2007, pp. 27-45.
[4] C.-y. Chen and S.-c. Wu, "The effects of pretreatment on the surface
properties of soils," Chemosphere, vol. 32, pp. 1083-1090, 1996.
[5] P. J. A. Howard, and D.M. Howard, "Use of organic carbon and loss-onignition
to estimate soil organic matter in different soil types and
horizons," Biol. Fertil. Soils, vol. 9, pp. 306-310, 1990.
[6] B. W. Bogan, and V. Trbovic, "Effect of sequestration on PAH
degradability with Fenton's reagent: roles of total organic carbon, humin,
and soil porosity," J. Hazard. Mater, vol. 100, pp. 285-300, 2003.
[7] X. Xue, K. Hanna, C. Despas, F. Wu, and N. Deng, "Effect of chelating
agent on the oxidation rate of PCP in the magnetite/H2O2 system at
neutral pH," J. Mol. Catal. A: Chem, vol. 311, pp. 29-35, 2009.
[8] S. R. Kanel, B. Neppolian, H. Choi, and J.W. Yang, "Heterogeneous
catalytic oxidation of phenanthrene by hydrogen peroxide in soil slurry:
kinetics, mechanism and implication," Soil Sediment Contam, vol. 12,
pp. 101-117, 2003.
[9] C. Valderrama, R. Alessandri, T. Aunola, J. L. Cortina, X. Gamisans,
and T. Tuhkanen, "Oxidation by Fenton's reagent combined with
biological treatment applied to a creosote-contaminated soil," J. Hazard.
Mater, vol. 166, pp. 594-602, 2009.
[1] S. Lewis, A. Lynch, L. Bachas, S. Hampson, L. Ormsbee, and D.
Bhattacharyya, "Chelate-modified Fenton reaction for the degradation
of trichloroethylene in aqueous and two-phase systems," Environ. Eng.
Sci, vol. 26, pp. 849-859, 2009.
[2] K. Nam, W. Rodriguez, and J. J. Kukor, "Enhanced degradation of
polycyclic aromatic hydrocarbons by biodegradation combined with a
modified Fenton reaction," Chemosphere, vol. 45, pp. 11-20, 2001.
[3] Patiram, Brajendra, T.N.S. Azad, and T. Ramesh, Soil Testing and
Analysis: Plant, Water and Pesticide Residues. India: New India
Publishing Agency, 2007, pp. 27-45.
[4] C.-y. Chen and S.-c. Wu, "The effects of pretreatment on the surface
properties of soils," Chemosphere, vol. 32, pp. 1083-1090, 1996.
[5] P. J. A. Howard, and D.M. Howard, "Use of organic carbon and loss-onignition
to estimate soil organic matter in different soil types and
horizons," Biol. Fertil. Soils, vol. 9, pp. 306-310, 1990.
[6] B. W. Bogan, and V. Trbovic, "Effect of sequestration on PAH
degradability with Fenton's reagent: roles of total organic carbon, humin,
and soil porosity," J. Hazard. Mater, vol. 100, pp. 285-300, 2003.
[7] X. Xue, K. Hanna, C. Despas, F. Wu, and N. Deng, "Effect of chelating
agent on the oxidation rate of PCP in the magnetite/H2O2 system at
neutral pH," J. Mol. Catal. A: Chem, vol. 311, pp. 29-35, 2009.
[8] S. R. Kanel, B. Neppolian, H. Choi, and J.W. Yang, "Heterogeneous
catalytic oxidation of phenanthrene by hydrogen peroxide in soil slurry:
kinetics, mechanism and implication," Soil Sediment Contam, vol. 12,
pp. 101-117, 2003.
[9] C. Valderrama, R. Alessandri, T. Aunola, J. L. Cortina, X. Gamisans,
and T. Tuhkanen, "Oxidation by Fenton's reagent combined with
biological treatment applied to a creosote-contaminated soil," J. Hazard.
Mater, vol. 166, pp. 594-602, 2009.
@article{"International Journal of Earth, Energy and Environmental Sciences:58844", author = "Venny and S. Gan and H. K. Ng", title = "Chelate Enhanced Modified Fenton Treatment for Polycyclic Aromatic Hydrocarbons Contaminated Soils", abstract = "This work focuses on the remediation of polycyclic
aromatic hydrocarbons (PAHs)-contaminated soil via Fenton
treatment coupled with novel chelating agent (CA). The feasibility of
chelated modified Fenton (MF) treatment to promote PAH oxidation
in artificially contaminated soils was investigated in laboratory scale
batch experiments at natural pH. The effects of adding inorganic and
organic CA are discussed. Experiments using different iron catalyst
to CA ratios were conducted, resulting in hydrogen peroxide: soil:
iron: CA weight ratios that varied from 0.049: 1: 0.072: 0.008 to
0.049: 1: 0.072: 0.067. The results revealed that (1) inorganic CA
could provide much higher PAH removal efficiency and (2) most of
the proposed CAs were more efficient than commonly utilised CAs
even at mild ratio. This work highlights the potential of novel
chelating agents in maintaining a suitable environment throughout
the Fenton treatment, particularly in soils with high buffer capacity.", keywords = "Chelating agent, Fenton, hydroxyl radicals,polycyclic aromatic hydrocarbon.", volume = "5", number = "4", pages = "244-6", }