Geochemical heterogeneity in a sand and gravel aquifer: Effect of sediment mineralogy and particle size on the sorption of chlorobenzenes

The effect of particle size, mineralogy and sediment organic carbon (SOC) on sorption of tetrachlorobenzene and pentachlorobenzene was evaluated using batch-isotherm experiments on sediment particle-size and mineralogical fractions from a sand and gravel aquifer, Cape Cod, Massachusetts. Concentration of SOC and sorption of chlorobenzenes increase with decreasing particle size. For a given particle size, the magnetic fraction has a higher SOC content and sorption capacity than the bulk or non-magnetic fractions. Sorption appears to be controlled by the magnetic minerals, which comprise only 5–25% of the bulk sediment. Although SOC content of the bulk sediment is <0.1%, the observed sorption of chlorobenzenes is consistent with a partition mechanism and is adequately predicted by models relating sorption to the octanol/water partition coefficient of the solute and SOC content. A conceptual model based on preferential association of dissolved organic matter with positively-charged mineral surfaces is proposed to describe micro-scale, intergranular variability in sorption properties of the aquifer sediments.

[1]  E. Sudicky.  A natural gradient experiment on solute transport in a sand aquifer: Spatial variability of hydraulic conductivity and its role in the dispersion process , 1986 .

[2]  George A. Parks,et al.  The Isoelectric Points of Solid Oxides, Solid Hydroxides, and Aqueous Hydroxo Complex Systems , 1965 .

[3]  W. Weber,et al.  Sorption of hydrophobic compounds by sediments, soils and suspended solids—II. Sorbent evaluation studies , 1983 .

[4]  G. K. Williams,et al.  Structure-activity relationships for sorption of linear alkylbenzenesulfonates. , 1987, Environmental science & technology.

[5]  C. T. Chiou,et al.  Mechanistic roles of soil humus and minerals in the sorption of nonionic organic compounds from aqueous and organic solutions , 1985 .

[6]  C. Carter,et al.  Binding of DDT to dissolved humic materials. , 1982, Environmental science & technology.

[7]  William P. Ball,et al.  Variability of aquifer sorption properties in a field experiment on groundwater transport of organic solutes: Methods and preliminary results , 1986 .

[8]  K. Brown,et al.  Reactions and movement of organic chemicals in soils , 1989 .

[9]  C. T. Chiou,et al.  A Physical Concept of Soil-Water Equilibria for Nonionic Organic Compounds , 1979, Science.

[10]  Lynn W. Gelhar,et al.  Stochastic subsurface hydrology from theory to applications , 1986 .

[11]  W W Wood,et al.  Intragranular Diffusion: An Important Mechanism Influencing Solute Transport in Clastic Aquifers? , 1990, Science.

[12]  C. T. Chiou,et al.  Partition equilibriums of nonionic organic compounds between soil organic matter and water. , 1983, Environmental science & technology.

[13]  W. Weber,et al.  Sorption of hydrophobic compounds by sediments, soils and suspended solids--I. Theory and background , 1983 .

[14]  E. Tipping,et al.  The adsorption of aquatic humic substances by iron oxides , 1981 .

[15]  G. Dagan.  Statistical Theory of Groundwater Flow and Transport: Pore to Laboratory, Laboratory to Formation, and Formation to Regional Scale , 1986 .

[16]  John A. Cherry,et al.  A wireline piston core barrel for sampling cohesionless sand and gravel below the water table , 1987 .

[17]  Cass T. Miller,et al.  Sorption of hydrophobic organic pollutants in saturated soil systems , 1986 .

[18]  E. Thurman,et al.  Movement and fate of detergents in groundwater: a field study , 1986 .

[19]  Gordon Rittenhouse.  Transportation and deposition of heavy mineral , 1943 .

[20]  Albert J. Valocchi,et al.  Spatial moment analysis of the transport of kinetically adsorbing solutes through stratified aquifers , 1989 .

[21]  A. G. Hornsby,et al.  Influence of organic cosolvents on sorption of hydrophobic organic chemicals by soils , 1985 .

[22]  R. Jackson,et al.  Partitioning of strontium-90 among aqueous and mineral species in a contaminated aquifer. , 1983, Environmental science & technology.

[23]  William Walden Rubey.  The Size-Distribution of Heavy Minerals Within a Water-Laid Sandstone , 1933 .

[24]  Samuel H. Yalkowsky,et al.  Solubility and Partitioning. 3. The Solubility of Halobenzenes in Water , 1979 .

[25]  E. Tipping.  Adsorption by goethite (α-FeOOH) of humic substances from three different lakes☆ , 1981 .

[26]  Kenneth R. Morris,et al.  Sorption dynamics of hydrophobic pollutants in sediment suspensions , 1985 .

[27]  W. P. Ball,et al.  Characterization of a sandy aquifer material at the grain scale , 1990 .

[28]  D. K. Demcheck,et al.  Contamination of estuarine water, biota, and sediment by halogenated organic compounds: a field study. , 1988, Environmental science & technology.

[29]  M. Reinhard,et al.  Sorption of Hydrophobic Organic Compounds by Sediments , 1987 .

[30]  René P. Schwarzenbach,et al.  Transport of nonpolar organic compounds from surface water to groundwater. Laboratory sorption studies , 1981 .

[31]  Retardation of ammonium and potassium transport through a contaminated sand and gravel aquifer: the role of cation exchange , 1989 .

[32]  C. T. Chiou.  Theoretical Considerations of the Partition Uptake of Nonionic Organic Compounds by Soil Organic Matter , 2015 .

[33]  W. Jury,et al.  Spatial variability of pesticide adsorption parameters. , 1986, Environmental science & technology.

[34]  E. Thurman,et al.  Long-term fate of organic micropollutants in sewage-contaminated groundwater. , 1988, Environmental science & technology.

[35]  G. A. Parks.  Aqueous Surface Chemistry of Oxides and Complex Oxide Minerals: Isoelectric Point and Zero Point of Charge , 1967 .

[36]  Steven C. Smith,et al.  Influence of mineral-bound humic substances on the sorption of hydrophobic organic compounds , 1990 .

[37]  D. LeBlanc.  Sewage plume in a sand and gravel aquifer , 1982 .

[38]  P. Gschwend,et al.  Sorption kinetics of hydrophobic organic compounds to natural sediments and soils. , 1986, Environmental science & technology.

[39]  E. Teller,et al.  ADSORPTION OF GASES IN MULTIMOLECULAR LAYERS , 1938 .

[40]  J. McCarthy,et al.  Mechanisms of dissolved organic carbon adsorption on soil , 1989 .

[41]  John A. Cherry,et al.  Contaminant Migration in Saturated Unconsolidated Geologic Deposits , 1982 .

[42]  Peter K. Kitanidis,et al.  Analysis of one‐dimensional solute transport through porous media with spatially variable retardation factor , 1990 .

[43]  S. P. Garabedian,et al.  Large-scale dispersive transport in aquifers : field experiments and reactive transport theory , 1987 .

[44]  L. Lavkulich,et al.  Effect of sesquioxide coatings on surface charge of standard mineral and soil samples , 1983 .

[45]  F. Tickell.  The techniques of sedimentary mineralogy , 1965 .

[46]  P. Gschwend,et al.  On the constancy of sediment-water partition coefficients of hydrophobic organic pollutants , 1985 .

[47]  S. Karickhoff,et al.  Organic Pollutant Sorption in Aquatic Systems , 1984 .

[48]  R. Luthy,et al.  Effect of Organic Solvent on Sorption of Aromatic Solutes onto Soils , 1986 .

[49]  C. T. Chiou,et al.  Water solubility enhancement of some organic pollutants and pesticides by dissolved humic and fulvic acids. , 1986, Environmental science & technology.

[50]  S. Karickhoff,et al.  SORPTION OF HYDROPHOBIC POLLUTANTS ON NATURAL SEDIMENTS , 1979 .

[51]  James A. Davis,et al.  Adsorption of natural dissolved organic matter at the oxide/water interface , 1982 .