Abstract
The mobility of phenanthrene (PHE) in soils depends on its sorption and is influenced by either the existing soil humus or exogenous humic substances. Exogenous humic acids (HAs) were added to soil to enhance the amount of soil organic carbon (SOC) by 2.5, 5.0, and 10.0 g kg−1. PHE desorption of the treated soils was determined at two pH levels (3.0 and 6.0) and temperatures (15 and 25 °C). Soil PHE adsorption was related to pH and the type and quantity of added HAs. Humic acid (HA) and fulvic acid (FA) derived from peat had different effects on adsorption of PHE. Adsorption increased at first and then decreased with increasing quantity of exogenous FA. When the soil solution pH (in 0.005 M CaCl2) was 4.5 or 3.0, the turning points were 2.5 g FA kg−1 at pH 3.0 and 5 g FA kg−1 at pH 4.5. When soil solution pH was 6, the amount of adsorbed PHE was enhanced with increasing exogenous HAs (HA or FA) and amount of adsorption by soil treated with FA was higher than with HA. Adsorption of PHE in the FA treatment at 10.0 g kg−1 was lower than the controls (untreated soil or treatment with HAs at 0 g kg−1) when the soil solution pH was 3.0. This suggests that FA adsorbed by soil was desorbed at low pH and would then increase PHE solubility, and PHE then combined with FA. PHE adsorption was usually higher under lower pH and/or lower temperature conditions. PHE sorption fitted the Freundlich isotherm, indicating that exogenous humic substances influenced adsorption of phenanthrene, which in turn was affected by environmental conditions such as pH and temperature. Thus, exogenous humic substances can be used to control the mobility of soil PAHs under appropriate conditions to decrease PAH contamination.
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References cited
Angove MJ, Fernandes MB, Ikhsan J. 2002 The sorption of anthracene onto goethite and kaolinite in the presence of some benzene carboxylic acidsJournal of Colloid and Interface Science 247: 282–289
Carmichael LM, Christman RF, Pfaender FK. 1997 Desorption and mineralization kinetics of phenanthrene and chrysene in contaminated soilsEnvironmental Science & Technology 31: 126–132
Chiou CT, McGroddy SE, Kile DE. 1998 Partition characteristics of polycyclic aromatic hydrocarbons on soils and sediments Environmental Science & Technology 32: 264–269
Conte P, Zena A, Pilidis G, Piccolo A. 2001 Increased retention of polycyclic aromatic hydrocarbons in soils induced by soil treatment with humic substances Environmental Pollution 112: 27–31
Huang WL, Ping PA, Yu ZQ, Fu HM. 2003 Effects of organic matter heterogeneity on sorption and desorption of organic contaminants by soils and sedimentsApplied Geochemistry 18: 955–972
Käcker T, Haupt ETK, Garms C, Francke W, Steinhart H. 2002 Structural characterization of humic acid-bound PAH residues in soil by 13C-CPMAS-NMR-spectroscopy: evidence of covalent bonds Chemosphere 48117–131
Kim YJ, Osako M. 2003 Leaching characteristics of polycyclic aromatic hydrocarbons (PAHs) from spiked sandy soilChemosphere 51: 387–395
Kleineidam SE, Rugner H, Ligouis B, Grathwohl P. 1999 Organic matter facies and equilibrium sorption of phenanthreneEnvironmental Science & Technology 33: 1637–1644
Kohl SD, Rice JA. 1998 The binding of contaminants to humin: a mass balance Chemosphere 36: 251–261
Kohl SD, Rice JA. 1999 Contribution of lipids to the nonlinear sorption of polycyclic aromatic hydrocarbons to soil organic matterOrganic Geochemistry 30: 929–936
Kubicki JD, Apitz SE. 1999 Models of natural organic matter and interactions with organic contaminantsOrganic Geochemistry 30: 911–927
Laor Y, Farmer WJ, Aochi Y, Strom PF. 1998 Phenathrene binding and sorption to dissolved and to mineral-associated humic acidWater Research 6: 1923–1931
Laor Y, Strom PF, Farmer WJ. 1999 Bioavailability of phenathrene sorbed to mineral-associated humic acidWater Research 33: 1719–1729
Lassen P, Carlsen L. 1997 Solubilization of phenanthrene by humic acids Chemosphere 34: 817–825
Lee CL, Kuo LJ, Wang HL, Hsieh PC. 2003 Effects of ionic strength on the binding of phenanthrene and pyrene to humic substances: three-stage variation modelWater Research 37: 4250–4258
Li JL, Chen BH. 2002 Solubilization of model polycyclic aromatic hydrocarbons by nonionic surfactantsChemical Engineering Science 57: 2825–2835
Lodge KB, 1989 Solubility studies using a generator column for 2,3,7,8-tetrachlorodibenzo-p-dioxinChemosphere 18: 933–940
Luthy RG, Aiken GR, Brussau ML, Cunningham SD, Gschwend PM, Pignatello JJ, Reinhard M, Traina SJ, Weber WJ, Westall JC. 1997 Sequestration of hydrophobic organic contaminants by geosorbentsEnvironmental Science & Technology 31: 3341–3347
MacKay AA, Gschwend PM. 2001 Enhanced concentrations of PAHs in groundwater at a coal tar siteEnvironmental Science & Technology 35: 1320–1328
Ortega-Calvo JJ, Lahlou M, Saiz-Jimenez C. 1997 Effect of organic matter and clays on the biodegradation of phenanthrene in soilsInternational Biodeterioration & Biodegradation 40: 101–106
Raber B, Koegel-Knabner I, Stein C, Klem D. 1998 Partitioning of polycyclic aromatic hydrocarbons to dissolved organic matter from different soilsChemosphere 36: 79–97
Ran Y, Huang W, Rao PSC, Liu D, Sheng G, Fu J. 2002 The role of condensed organic matter in the nonlinear sorption of hydrophobic organic contaminants by a peat and sediments Journal of Environmental Quality 31: 1953–1962
Rebhun M, DeSmedt F, Rwetabula J. 1996 Dissolved humic substances for remediation of sites contaminated by organic pollutants: binding-desorption model predictionsWater Research 30: 2027–2038
Schlautman MA, Morgan JJ. 1994 Effects of aqueous chemistry on the binding of polycyclic aromatic hydrocarbons by dissolved humic materials: commentEnvironmental Science & Technology 28: 367–367
Song YF, Ou ZQ, Sun TH. 1995 Analytical method of polycyclic aromatic hydrocarbons (PAHs) in soil and plant samplesChinese Journal of Applied Ecology 6: 92–96
Stevenson FJ, 1994 Humus Chemistry: Genesis, Composition, Reactions 2 John Wiley & Sons, New York
Swift RS, 1996 Organic matter characterisation. Methods of Soil Analysis: Part 3. Chemical Methods. Soil Science Society of America and American Society of Agronomy
Wilson SC, Jones KC. 1993 Bioremediation of soil contaminated with polynuclear aromatic hydrocarbons (PAHs): a reviewEnvironmental Pollution 81: 229–249
Weber WJ, Leboeuf EJ, Young TM, Huang WL. 2001 Contaminant interactions with geosorbent organic matter: Insights drawn from polymer sciencesWater Research 35: 853–868
Xia GS, Pignatello JJ. 2001 Detailed sorption isotherms of polar and apolar compounds in a high-organic soilEnvironmental Science & Technology 35: 84–94
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We thank the Major State Basic Research and Development Program of the People’s Republic of China (2002CB410810), the National Science Foundation of China (No. 40432005), for financial support.
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Ping, L., Luo, Y., Wu, L. et al. Phenanthrene adsorption by soils treated with humic substances under different pH and temperature conditions. Environ Geochem Health 28, 189–195 (2006). https://doi.org/10.1007/s10653-005-9030-0
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DOI: https://doi.org/10.1007/s10653-005-9030-0