친환경 착제가 적용된 modified Fenton 공정을 이용한BTEX로 오염된 지하수의 복원 = BTEX-contaminated Groundwater Remediation with Modified Fenton Reaction using Environmental Friendly Chelating Agent

다국어 초록 (Multilingual Abstract)

The effect of in-organic chelating agents with Fe(II) and Fe(III) in modified Fenton was evaluated to degradationBTEX (benzene, toluene, ethylbenzene, xylene). Citric acid and pyrophosphate were used in experimentals andan optimum chelating agent for BTEX degradation was determined. In H2O2/Fe(III)/citric acid, degradation of BTEXwas decreased when concentration of citric acid was increased. In H2O2/Fe(III)/pyrophosphate, degradation of BTEXwas increased when concentration of pyrophosphate was increased and degradation for BTEX was relatively high comparedwith H2O2/Fe(III)/citric acid. In H2O2/Fe(II)/chelating agents, degradation for BTEX was high and pH variationwas minimized when molar ratio of Fe(II) and citric acid was 1:1. Optimum molar concentration of Fe(II), citric acidand H2O2 were 7 mM, 7mM and 500 mM for degradation of 100 mg/L of benzene to obtain best efficiency of H2O2,least precipitation of iron and best degradation.

참고문헌 (Reference)

1 김진우, "고체발효에서 반응표면분석법을 이용한 구연산 생산 최적화" 한국화학공학회 50 (50): 879-884, 2012

2 Kong, S. H., "Treatment of Petroleum-Contaminated Soils using Iron Mineral-Catalyzed Hydrogen Peroxide" 37 : 1473-1482, 1998

3 Watts, R. J., "Role of Reductants in the Enhanced Desorption and Transformation of Chloroaliphatic Compounds by Modified Fenton’s Reactions" 33 : 3432-3437, 1999

4 Hong, J., "Removal of Rhodamine B under Visible Irradiation in the presence of Fe0, H2O2, Citrate and Aeration at Circumneuteal pH" 84 : 1542-1547, 2011

5 Francis, A. J., "Remediation of Soils and Wastes Contaminated with Uranium and Toxic Metals" 32 (32): 3993-3998, 1998

6 Sillanpaa, M., "Recent Developments in Chelate Degradation" 22 : 791-801, 2001

7 Liang, C., "Potential for Activated Persulfate Degradation of BTEX Contamination" 42 : 4091-4100, 2004

8 Katsumata, H., "Photo-Fenton Degradation of Alachlor in the presence of Citrate Solution" 180 : 38-45, 2006

9 Liang, C., "Persulfate Oxidation for In Situ Remediation of TCE. II. Activated by Chelated Ferrous Ion" 55 : 1225-1233, 2004

10 Li, Y., "Kinetics Studies of Trichlorophenol Destruction by Chelate-Based Fenton Reaction" 22 : 756-771, 2005

11 Venny, S. G., "Inorganic Chelated Modified-Fenton Treatment of Polycyclic Aromatic Hydrocarbon (PAH)-Contaminated Soils" 180 : 1-8, 2012

12 Lindsey. M. E., "Inhibition of Hydroxyl Radical Reaction with Aromatics by Dissolved Natural Organic Matter" 34 : 444-449, 2000

13 Do, S. Y., "Feasibility Study on an Oxidant-Injected Permeable Reactive Barrier to Treat BTEX Contamination: Adsorptive and Catalytic Characteristics of Waste-Reclaimed" 191 : 19-25, 2011

14 Kang, N., "Enhanced Chemical Oxidation of Aromatic Hydrocarbons in Soil Systems" 61 : 909-922, 2005

15 Wang, X., "Effect of Pyrophosphate on the Dechlorination of Tetrachloroethene by the Fenton Reaction" 17 (17): 1689-1694, 1998

16 Rastogi, A., "Effect of Inorganic, Synthetic and Naturally Occurring Chelating Agents on Fe(II) Mediated Advanced Oxidation of Chlorophenols" 43 : 684-694, 2009

17 Xue, X., "Effect of Chelating Agent on the Oxidation Rate of PCP in the Magnetite/H2O2 System at Neutral pH" 311 : 29-35, 2009

18 Youngmin Lee, "Degradation of carbon tetrachloride in modified Fenton reaction" 한국화학공학회 29 (29): 769-774, 2012

19 Kwan, W. P., "Decomposition of Hydrogen Peroxide and Organic Compounds in the presence of Dissolved Iron and Ferrihydrite" 36 : 1467-1476, 2002

20 Sun, Y., "Chemical Treatment of Pesticide Wastes. Evaluation of Fe(III) Chelates for Catalytic Hydrogen Peroxide Oxidation of 2,4-D at Circumneutral pH" 40 (40): 322-327, 1992

21 Xu, X., "An Evaluation of the Green Chelant EDDS to Enhance the Stability of Hydrogen Peroxide in the presence of Aquifer Solids" 69 (69): 755-762, 2007