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Volumn 183, Issue , 2012, Pages 357-364

Diuron abatement in contaminated soil using Fenton-like process

Author keywords

Citrate; Diuron; Fenton like; Soil remediation

Indexed keywords

AQUEOUS PHASE; BATCH SYSTEMS; CHELATING AGENT; CITRATE; CONTAMINATED SOILS; DIURON; FENTON LIKES; FENTON'S REACTION; FENTON-LIKE PROCESS; INITIAL CONCENTRATION; IRON CHELATE; IRON MINERALS; IRON SALTS; LIQUID PHASE; LIQUID PHASIS; LOW TOXICITY; MICROTOX; NEUTRAL PH; REDUCTANTS; ROOM TEMPERATURE; SOIL ORGANIC MATTERS; SOIL REMEDIATION; TOXICITY VALUES; TREATED SOILS;

EID: 84856531979     PISSN: 13858947     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.cej.2012.01.010     Document Type: Article
Times cited : (33)

References (52)
  • 3
    • 3343023883 scopus 로고    scopus 로고
    • Environmental impact of diuron transformation: a review
    • Giacomazzi S., Cochet N. Environmental impact of diuron transformation: a review. Chemosphere 2004, 56(11):1021-1032.
    • (2004) Chemosphere , vol.56 , Issue.11 , pp. 1021-1032
    • Giacomazzi, S.1    Cochet, N.2
  • 4
    • 54849429536 scopus 로고    scopus 로고
    • Study of the toxicity of diuron and its metabolites formed in aqueous medium during application of the electrochemical advanced oxidation process electro-Fenton
    • Oturan N., Trajkovska S., Oturan M.A., Couderchet M., Aaron J.J. Study of the toxicity of diuron and its metabolites formed in aqueous medium during application of the electrochemical advanced oxidation process electro-Fenton. Chemosphere 2008, 73:1550-1556.
    • (2008) Chemosphere , vol.73 , pp. 1550-1556
    • Oturan, N.1    Trajkovska, S.2    Oturan, M.A.3    Couderchet, M.4    Aaron, J.J.5
  • 5
    • 0347003762 scopus 로고    scopus 로고
    • Combined bioaugmentation and biostimulation to cleanup soil contaminated with high concentrations of atrazine
    • Silva E., Fialho A.M., Sá-Correia I., Burns R.G., Shaw L.J. Combined bioaugmentation and biostimulation to cleanup soil contaminated with high concentrations of atrazine. Environ. Sci. Technol. 2004, 38:632-637.
    • (2004) Environ. Sci. Technol. , vol.38 , pp. 632-637
    • Silva, E.1    Fialho, A.M.2    Sá-Correia, I.3    Burns, R.G.4    Shaw, L.J.5
  • 6
    • 31444440037 scopus 로고    scopus 로고
    • Treatment of contaminated soils and groundwater using ISCO Pract. Periodical Hazard. Toxicol. Radioact
    • Watts R.J., Teel A.L. Treatment of contaminated soils and groundwater using ISCO Pract. Periodical Hazard. Toxicol. Radioact. Waste Manage. 2006, 10:2-9.
    • (2006) Waste Manage. , vol.10 , pp. 2-9
    • Watts, R.J.1    Teel, A.L.2
  • 7
    • 0025645826 scopus 로고
    • Treatment of pentachlorophenol-contaminated soils using Fentons reagent
    • Watts R.J., Udell M.D., Rauch P.A., Leung S.W. Treatment of pentachlorophenol-contaminated soils using Fentons reagent. Hazard. Waste Hazard. Mater. 1990, 7(4):335-345.
    • (1990) Hazard. Waste Hazard. Mater. , vol.7 , Issue.4 , pp. 335-345
    • Watts, R.J.1    Udell, M.D.2    Rauch, P.A.3    Leung, S.W.4
  • 8
    • 0031280243 scopus 로고    scopus 로고
    • Efficacy of in situ ozonation for the remediation of PAH contaminated soils
    • Masten S.J., Davies S.H.R. Efficacy of in situ ozonation for the remediation of PAH contaminated soils. J. Contam. Hydrol. 1997, 28(4):327-335.
    • (1997) J. Contam. Hydrol. , vol.28 , Issue.4 , pp. 327-335
    • Masten, S.J.1    Davies, S.H.R.2
  • 9
    • 0036123249 scopus 로고    scopus 로고
    • Modeling in situ ozonation for the remediation of non-volatile PAH-contaminated unsaturated soils
    • Kim J., Choi H. Modeling in situ ozonation for the remediation of non-volatile PAH-contaminated unsaturated soils. J. Contam. Hydrol. 2002, 55:261-285.
    • (2002) J. Contam. Hydrol. , vol.55 , pp. 261-285
    • Kim, J.1    Choi, H.2
  • 10
    • 0141457446 scopus 로고    scopus 로고
    • Permanganate oxidation of sorbed polycyclic aromatic hydrocarbons
    • Brown G.S., Barton L.L., Thomson B.M. Permanganate oxidation of sorbed polycyclic aromatic hydrocarbons. Waste Manage. 2003, 23:737-740.
    • (2003) Waste Manage. , vol.23 , pp. 737-740
    • Brown, G.S.1    Barton, L.L.2    Thomson, B.M.3
  • 11
    • 41449096203 scopus 로고    scopus 로고
    • Application of potassium permanganate as an oxidant for in situ oxidation of trichloroethylene contaminated groundwater: a laboratory and kinetics study
    • Kao C.M., Huang K.D., Wang J.Y., Chen T.Y., Chen H.Y. Application of potassium permanganate as an oxidant for in situ oxidation of trichloroethylene contaminated groundwater: a laboratory and kinetics study. J. Hazard. Mater. 2008, 153:919-927.
    • (2008) J. Hazard. Mater. , vol.153 , pp. 919-927
    • Kao, C.M.1    Huang, K.D.2    Wang, J.Y.3    Chen, T.Y.4    Chen, H.Y.5
  • 12
    • 36048993091 scopus 로고    scopus 로고
    • Persulphate oxidation of trichloroethylene with and without iron activation in porous media
    • Liang C., Lee I.L., Hsu I.-Y., Liang C.P., Lin Y.L. Persulphate oxidation of trichloroethylene with and without iron activation in porous media. Chemosphere 2008, 70:426-435.
    • (2008) Chemosphere , vol.70 , pp. 426-435
    • Liang, C.1    Lee, I.L.2    Hsu, I.-Y.3    Liang, C.P.4    Lin, Y.L.5
  • 13
    • 57549115634 scopus 로고    scopus 로고
    • Sulphate radical-based ferrous peroxymonosulphate oxidative system for PCBs degradation in aqueous and sediment systems
    • Rastogi A., Al-Abed S.R., Dionysiou D.D. Sulphate radical-based ferrous peroxymonosulphate oxidative system for PCBs degradation in aqueous and sediment systems. Appl. Catal. B Environ. 2009, 85:171-179.
    • (2009) Appl. Catal. B Environ. , vol.85 , pp. 171-179
    • Rastogi, A.1    Al-Abed, S.R.2    Dionysiou, D.D.3
  • 14
    • 79955729615 scopus 로고    scopus 로고
    • Soil remediation by Fenton-like process: phenol removal and soil organic matter modification
    • Romero A., Santos A., Cordero T., Rodriguez-Mirasol J., Rosas J.M., Vicente F. Soil remediation by Fenton-like process: phenol removal and soil organic matter modification. Chem. Eng. J. 2011, 170(1):36-43.
    • (2011) Chem. Eng. J. , vol.170 , Issue.1 , pp. 36-43
    • Romero, A.1    Santos, A.2    Cordero, T.3    Rodriguez-Mirasol, J.4    Rosas, J.M.5    Vicente, F.6
  • 15
    • 32844474236 scopus 로고    scopus 로고
    • Experimental in situ chemical peroxidation of atrazine in contaminated soil
    • Mecozzi R., Di Palma L., Merli C. Experimental in situ chemical peroxidation of atrazine in contaminated soil. Chemosphere 2006, 62:1481-1489.
    • (2006) Chemosphere , vol.62 , pp. 1481-1489
    • Mecozzi, R.1    Di Palma, L.2    Merli, C.3
  • 16
    • 15844380753 scopus 로고    scopus 로고
    • 2 propagations-CHP) for in situ soil and groundwater remediation
    • 2 propagations-CHP) for in situ soil and groundwater remediation. J. Environ. Eng. 2005, 131:612-622.
    • (2005) J. Environ. Eng. , vol.131 , pp. 612-622
    • Watts, R.J.1    Teel, A.L.2
  • 17
    • 6044252422 scopus 로고    scopus 로고
    • Identification of the reactive oxygen species responsible for carbon tetrachloride degradation in modified Fenton's systems
    • Smith B.A., Teel A.L., Watts R.J. Identification of the reactive oxygen species responsible for carbon tetrachloride degradation in modified Fenton's systems. Environ. Sci. Technol. 2004, 38:5465-5469.
    • (2004) Environ. Sci. Technol. , vol.38 , pp. 5465-5469
    • Smith, B.A.1    Teel, A.L.2    Watts, R.J.3
  • 18
    • 0000980183 scopus 로고
    • Chemical treatment of pesticide wastes. Evaluation of Fe(III) chelates for catalytic hydrogen peroxide oxidation of 2,4-D at circumneutral pH
    • Sun Y., Pignatello J.J. Chemical treatment of pesticide wastes. Evaluation of Fe(III) chelates for catalytic hydrogen peroxide oxidation of 2,4-D at circumneutral pH. J. Agric. Food Chem. 1992, 40:322-327.
    • (1992) J. Agric. Food Chem. , vol.40 , pp. 322-327
    • Sun, Y.1    Pignatello, J.J.2
  • 19
    • 0033565478 scopus 로고    scopus 로고
    • Atrazine degradation in irradiated iron/oxalate systems: effects of pH and oxalate
    • Balmer M.E., Sultzberger B. Atrazine degradation in irradiated iron/oxalate systems: effects of pH and oxalate. Environ. Sci. Technol. 1999, 33:2418-2424.
    • (1999) Environ. Sci. Technol. , vol.33 , pp. 2418-2424
    • Balmer, M.E.1    Sultzberger, B.2
  • 20
    • 0034849444 scopus 로고    scopus 로고
    • Enhanced degradation of polycyclic aromatic hydrocarbons by biodegradation combined with a modified Fenton reaction
    • Nam K., Rodriguez W., Kukor J.J. Enhanced degradation of polycyclic aromatic hydrocarbons by biodegradation combined with a modified Fenton reaction. Chemosphere 2001, 45:11-20.
    • (2001) Chemosphere , vol.45 , pp. 11-20
    • Nam, K.1    Rodriguez, W.2    Kukor, J.J.3
  • 21
    • 0031434570 scopus 로고    scopus 로고
    • Depth of Fenton-like oxidation in remediation of surface soil
    • Kakarla C., Watts R.J. Depth of Fenton-like oxidation in remediation of surface soil. J. Environ. Eng. 1997, 123:11-17.
    • (1997) J. Environ. Eng. , vol.123 , pp. 11-17
    • Kakarla, C.1    Watts, R.J.2
  • 22
    • 0025721950 scopus 로고
    • Treatment of 4 biorefractory contaminants in soils using catalyzed hydrogen-peroxide
    • Tyre B.W., Watts R.J., Miller G.C. Treatment of 4 biorefractory contaminants in soils using catalyzed hydrogen-peroxide. J. Environ. Qual. 1991, 20:832-838.
    • (1991) J. Environ. Qual. , vol.20 , pp. 832-838
    • Tyre, B.W.1    Watts, R.J.2    Miller, G.C.3
  • 23
    • 0027438401 scopus 로고
    • Use of iron minerals in optimizing the peroxide treatment of contaminated soils
    • Watts R.J., Udell M.D., Monsen R.M. Use of iron minerals in optimizing the peroxide treatment of contaminated soils. Water Environ. Res. 1993, 65:839-844.
    • (1993) Water Environ. Res. , vol.65 , pp. 839-844
    • Watts, R.J.1    Udell, M.D.2    Monsen, R.M.3
  • 24
    • 0032938419 scopus 로고    scopus 로고
    • Fenton-like soil remediation catalyzed by naturally occurring iron minerals
    • Watts R.J., Udell M.D., Kong S., Leung S.W. Fenton-like soil remediation catalyzed by naturally occurring iron minerals. Environ. Eng. Sci. 1999, 16:93-103.
    • (1999) Environ. Eng. Sci. , vol.16 , pp. 93-103
    • Watts, R.J.1    Udell, M.D.2    Kong, S.3    Leung, S.W.4
  • 25
    • 0028991162 scopus 로고
    • Hydrogen peroxide decomposition and quinoline degradation in the presence of aquifer material
    • Miller C.M., Valentine R.L. Hydrogen peroxide decomposition and quinoline degradation in the presence of aquifer material. Water Res. 1995, 29:2353-2359.
    • (1995) Water Res. , vol.29 , pp. 2353-2359
    • Miller, C.M.1    Valentine, R.L.2
  • 26
    • 0037443292 scopus 로고    scopus 로고
    • Rates of hydroxyl radical generation and organic compound oxidation in mineral-catalyzed Fenton-like systems
    • Kwan W.P., Voelker B.M. Rates of hydroxyl radical generation and organic compound oxidation in mineral-catalyzed Fenton-like systems. Environ. Sci. Technol. 2003, 37:1150-1158.
    • (2003) Environ. Sci. Technol. , vol.37 , pp. 1150-1158
    • Kwan, W.P.1    Voelker, B.M.2
  • 27
    • 8744251188 scopus 로고    scopus 로고
    • Kinetic effect of humic acid on alachlor degradation by anodic Fenton treatment
    • Wang Q.Q., Lemley A.T. Kinetic effect of humic acid on alachlor degradation by anodic Fenton treatment. J. Environ. Qual. 2004, 33:2343-2352.
    • (2004) J. Environ. Qual. , vol.33 , pp. 2343-2352
    • Wang, Q.Q.1    Lemley, A.T.2
  • 28
    • 0026680246 scopus 로고
    • 3+-catalyzed degradation of chlorophenoxy herbicides by hydrogen peroxide
    • 3+-catalyzed degradation of chlorophenoxy herbicides by hydrogen peroxide. Environ. Sci. Technol. 1992, 26:944-951.
    • (1992) Environ. Sci. Technol. , vol.26 , pp. 944-951
    • Pignatello, J.J.1
  • 30
    • 6944253315 scopus 로고    scopus 로고
    • An unconventional approach to studying the reaction kinetics of the Fenton's oxidation of 2,4-dichlorophenoxyacetic acid
    • Chu W., Kwan C.Y., Chan K.H., Chong C. An unconventional approach to studying the reaction kinetics of the Fenton's oxidation of 2,4-dichlorophenoxyacetic acid. Chemosphere 2004, 57:1165-1171.
    • (2004) Chemosphere , vol.57 , pp. 1165-1171
    • Chu, W.1    Kwan, C.Y.2    Chan, K.H.3    Chong, C.4
  • 31
    • 84856559581 scopus 로고
    • NEN 5754 Method, Determination of organic matter content in soil as loss on-ignition
    • NEN 5754 Method, Determination of organic matter content in soil as loss on-ignition, 1994.
    • (1994)
  • 32
    • 0036236022 scopus 로고    scopus 로고
    • Labile and recalcitrant pools of carbon and nitrogen in organic matter decomposing at different depths in soil: an acid hydrolysis approach
    • Rovira P., Vallejo V.R. Labile and recalcitrant pools of carbon and nitrogen in organic matter decomposing at different depths in soil: an acid hydrolysis approach. Geoderma 2002, 107:109-141.
    • (2002) Geoderma , vol.107 , pp. 109-141
    • Rovira, P.1    Vallejo, V.R.2
  • 33
    • 0000607887 scopus 로고
    • A critical examination of a rapid method for determining organic carbon in soils
    • Walkley A., Black I.A. A critical examination of a rapid method for determining organic carbon in soils. Soil Sci. 1974, 63:251-264.
    • (1974) Soil Sci. , vol.63 , pp. 251-264
    • Walkley, A.1    Black, I.A.2
  • 34
    • 84856549672 scopus 로고    scopus 로고
    • USEPA 3050B Method, Acid digestion of sediments, sludges and soils
    • USEPA 3050B Method, Acid digestion of sediments, sludges and soils, 1996.
    • (1996)
  • 35
    • 0000922435 scopus 로고
    • Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate
    • Mehra O.P., Jackson M.L. Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate. Clay Min. Bull. 1960, 5:317-327.
    • (1960) Clay Min. Bull. , vol.5 , pp. 317-327
    • Mehra, O.P.1    Jackson, M.L.2
  • 36
    • 33750965980 scopus 로고    scopus 로고
    • Labile, recalcitrant, and inert organic matter in Mediterranean forest soils
    • Rovira P., Vallejo V.R. Labile, recalcitrant, and inert organic matter in Mediterranean forest soils. Soil Biol. Biochem. 2007, 39:202-215.
    • (2007) Soil Biol. Biochem. , vol.39 , pp. 202-215
    • Rovira, P.1    Vallejo, V.R.2
  • 37
    • 67651100657 scopus 로고    scopus 로고
    • Treatment of petroleum-hydrocarbon contaminated soils using hydrogen peroxide oxidation catalyzed by waste basic oxygen furnace slag
    • Tsai T.T., Kao C.M. Treatment of petroleum-hydrocarbon contaminated soils using hydrogen peroxide oxidation catalyzed by waste basic oxygen furnace slag. J. Hazard. Mater. 2009, 170:466-472.
    • (2009) J. Hazard. Mater. , vol.170 , pp. 466-472
    • Tsai, T.T.1    Kao, C.M.2
  • 38
    • 38849170569 scopus 로고    scopus 로고
    • Synthesis of the mixed oxides of iron and quartz and their catalytic activities for the Fenton-like oxidation
    • Hanna K., Kone T., Medjahdi G. Synthesis of the mixed oxides of iron and quartz and their catalytic activities for the Fenton-like oxidation. Catal. Commun. 2008, 9:955-959.
    • (2008) Catal. Commun. , vol.9 , pp. 955-959
    • Hanna, K.1    Kone, T.2    Medjahdi, G.3
  • 39
    • 0032524509 scopus 로고    scopus 로고
    • Catalytic decomposition of hydrogen peroxide on iron oxide: kinetics, mechanism, and implications
    • Gurol M.D., Lin S.S. Catalytic decomposition of hydrogen peroxide on iron oxide: kinetics, mechanism, and implications. Environ. Sci. Technol. 1998, 32:1417-1423.
    • (1998) Environ. Sci. Technol. , vol.32 , pp. 1417-1423
    • Gurol, M.D.1    Lin, S.S.2
  • 40
    • 0034664173 scopus 로고    scopus 로고
    • 2 oxidation reactions in dilute aqueous solution using atrazine as a model organic compound
    • 2 oxidation reactions in dilute aqueous solution using atrazine as a model organic compound. Water Res. 2000, 34:3107-3116.
    • (2000) Water Res. , vol.34 , pp. 3107-3116
    • Gallard, H.1    De Laat, J.2
  • 41
    • 0035284522 scopus 로고    scopus 로고
    • Comparison of mineral and soluble iron Fenton's catalysts for the treatment of trichloroethylene
    • Teel A.L., Warberg C.R., Atkinson D.A., Watts R.J. Comparison of mineral and soluble iron Fenton's catalysts for the treatment of trichloroethylene. Water Res. 2001, 35:977-984.
    • (2001) Water Res. , vol.35 , pp. 977-984
    • Teel, A.L.1    Warberg, C.R.2    Atkinson, D.A.3    Watts, R.J.4
  • 42
    • 0037473769 scopus 로고    scopus 로고
    • Hydrogen peroxide lifetime as an indicator of the efficiency of 3-chlorophenol Fenton's and Fenton-like oxidation in soils
    • Baciocchi R., Boni M.R., D'Aprile L. Hydrogen peroxide lifetime as an indicator of the efficiency of 3-chlorophenol Fenton's and Fenton-like oxidation in soils. J. Hazard. Mater. 2003, 96:305-329.
    • (2003) J. Hazard. Mater. , vol.96 , pp. 305-329
    • Baciocchi, R.1    Boni, M.R.2    D'Aprile, L.3
  • 43
    • 69049086557 scopus 로고    scopus 로고
    • In situ oxidation remediation technologies: kinetic of hydrogen peroxide decomposition on soil organic matter
    • Romero A., Santos A., Vicente F., Rodriguez S., Lopez Lafuente A. In situ oxidation remediation technologies: kinetic of hydrogen peroxide decomposition on soil organic matter. J. Hazard. Mater. 2009, 170:627-632.
    • (2009) J. Hazard. Mater. , vol.170 , pp. 627-632
    • Romero, A.1    Santos, A.2    Vicente, F.3    Rodriguez, S.4    Lopez Lafuente, A.5
  • 44
    • 84856515772 scopus 로고    scopus 로고
    • RD 9/2005, Relationship of Potentially Soil Polluting Activities and the Criteria and Standards for the Declaration of Contaminated Soils, BOE No. 15
    • RD 9/2005, Relationship of Potentially Soil Polluting Activities and the Criteria and Standards for the Declaration of Contaminated Soils, BOE No. 15, 2005, pp. 1833-1843.
    • (2005) , pp. 1833-1843
  • 45
    • 84860388874 scopus 로고    scopus 로고
    • Improvement soil remediation by using stabilizers and chelating agents in a Fenton-like process
    • Vicente F., Rosas J.M., Santos A., Romero A. Improvement soil remediation by using stabilizers and chelating agents in a Fenton-like process. Chem. Eng. J. 2011, 172:689-697.
    • (2011) Chem. Eng. J. , vol.172 , pp. 689-697
    • Vicente, F.1    Rosas, J.M.2    Santos, A.3    Romero, A.4
  • 46
    • 0037414644 scopus 로고    scopus 로고
    • Chemical oxidation of chlorinated non-aqueous phase liquid by hydrogen peroxide in natural sand systems
    • Yeh C.K.J., Wu H.M., Chen T.C. Chemical oxidation of chlorinated non-aqueous phase liquid by hydrogen peroxide in natural sand systems. J. Hazard. Mater. 2003, 96:29-51.
    • (2003) J. Hazard. Mater. , vol.96 , pp. 29-51
    • Yeh, C.K.J.1    Wu, H.M.2    Chen, T.C.3
  • 47
    • 0000080162 scopus 로고    scopus 로고
    • Determination of rates of hydroxyl radical generation in mineral-catalyzed Fenton-like oxidation
    • Chen P.H., Watts R.J. Determination of rates of hydroxyl radical generation in mineral-catalyzed Fenton-like oxidation. J. Chin. Inst. Environ. Eng. 2000, 10:201-208.
    • (2000) J. Chin. Inst. Environ. Eng. , vol.10 , pp. 201-208
    • Chen, P.H.1    Watts, R.J.2
  • 48
    • 75549085103 scopus 로고    scopus 로고
    • Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions Garrido-Ramírez, B.K.G - a review
    • Theng E.G., Mora M.L. Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions Garrido-Ramírez, B.K.G - a review. Appl. Clay Sci. 2010, 47:182-192.
    • (2010) Appl. Clay Sci. , vol.47 , pp. 182-192
    • Theng, E.G.1    Mora, M.L.2
  • 50
    • 77957005911 scopus 로고    scopus 로고
    • How toxic is toxic? A proposal for wastewater toxicity hazard assessment
    • Libralato G., Volpi Ghirardini A., Avezzu F. How toxic is toxic? A proposal for wastewater toxicity hazard assessment. Ecotox. Environ. Safety 2010, 73:1602-1611.
    • (2010) Ecotox. Environ. Safety , vol.73 , pp. 1602-1611
    • Libralato, G.1    Volpi Ghirardini, A.2    Avezzu, F.3
  • 51
    • 0034973361 scopus 로고    scopus 로고
    • Degradation products of a phenylurea herbicide, diuron: synthesis, ecotoxicity, and biotransformation
    • Tixier C., Sancelme M., Bonnemoy F., Cuer A., Veschambre H. Degradation products of a phenylurea herbicide, diuron: synthesis, ecotoxicity, and biotransformation. Environ. Toxicol. Chem. 2001, 20:1381-1389.
    • (2001) Environ. Toxicol. Chem. , vol.20 , pp. 1381-1389
    • Tixier, C.1    Sancelme, M.2    Bonnemoy, F.3    Cuer, A.4    Veschambre, H.5


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