Naphthalene sorption to organic soil materials studied with continuous stirred flow experiments

Jonge, H de; Heimovaara, T J; Verstraten, J M

doi:10.2136/sssaj1999.03615995006300020007x

Title: Naphthalene sorption to organic soil materials studied with continuous stirred flow experiments

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Abstract

Estimation of sorption-desorption kinetics of hydrophobic contaminants in soils and sediments is a prerequisite for assessing the risk of hazardous compounds and for studying the feasibility of bioremediation treatments. Naphthalene sorption studies were carried out with four organic soil materials, using a batch sorption technique and a continuously stirred flow (CSF) cell. Reproducibility of the CSF experiments were tested, and an experiment with different inputs showed that experimental results were independent of input pulse length. Single-particle and multi-particle linear driving force models and bicontinuum models were tested. When the sorption coefficient K{sub om} was fixed at the values obtained from the batch experiments, the RMSE modeling error increased with increasing N{sub 2} surface area, S{sub N2}, of the soil materials. The high RMSE for soil materials with a high N{sub 2} surface area was the result of strong sorption-desorption non-singularity, most probably due to a larger fraction of the applied naphthalene diffusing to slow sorption sites. A dual resistance sorption model was able to accurately describe the data with two free parameters. However, parameter uncertainty resulted from the simultaneous optimization of the rate parameter, {alpha}, and K{sub om}. The combination of batch sorption experiments, input-response experiments, and model exercises givemore »« less

Authors:

Jonge, H de ^[1]; Heimovaara, T J; Verstraten, J M ^[2]

Danish Inst. of Agricultural Sciences, Tjele (Denmark). Dept. of Crop Physiology and Soil Science
Univ. of Amsterdam (Netherlands). Dept. of Physical Geography and Soil Science

Publication Date:: Mon Mar 01 00:00:00 EST 1999

Sponsoring Org.:: USDOE

OSTI Identifier:: 678087

Resource Type:: Journal Article

Journal Name:: Soil Science Society of America Journal

Additional Journal Information:: Journal Volume: 63; Journal Issue: 2; Other Information: PBD: Mar-Apr 1999

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; SOILS; NAPHTHALENE; SORPTION; ORGANIC MATTER; SOIL CHEMISTRY; MATHEMATICAL MODELS; ENVIRONMENTAL TRANSPORT

Citation Formats


                    Jonge, H de, Heimovaara, T J, and Verstraten, J M. Naphthalene sorption to organic soil materials studied with continuous stirred flow experiments.  United States: N. p., 1999. 
        Web.  doi:10.2136/sssaj1999.03615995006300020007x.

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                    Jonge, H de, Heimovaara, T J, & Verstraten, J M. Naphthalene sorption to organic soil materials studied with continuous stirred flow experiments.  United States.  https://doi.org/10.2136/sssaj1999.03615995006300020007x

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                    Jonge, H de, Heimovaara, T J, and Verstraten, J M. 1999.  
        "Naphthalene sorption to organic soil materials studied with continuous stirred flow experiments".  United States.  https://doi.org/10.2136/sssaj1999.03615995006300020007x.

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@article{osti_678087,

  title        = {Naphthalene sorption to organic soil materials studied with continuous stirred flow experiments},

  author       = {Jonge, H de and Heimovaara, T J and Verstraten, J M},

  abstractNote = {Estimation of sorption-desorption kinetics of hydrophobic contaminants in soils and sediments is a prerequisite for assessing the risk of hazardous compounds and for studying the feasibility of bioremediation treatments. Naphthalene sorption studies were carried out with four organic soil materials, using a batch sorption technique and a continuously stirred flow (CSF) cell. Reproducibility of the CSF experiments were tested, and an experiment with different inputs showed that experimental results were independent of input pulse length. Single-particle and multi-particle linear driving force models and bicontinuum models were tested. When the sorption coefficient K{sub om} was fixed at the values obtained from the batch experiments, the RMSE modeling error increased with increasing N{sub 2} surface area, S{sub N2}, of the soil materials. The high RMSE for soil materials with a high N{sub 2} surface area was the result of strong sorption-desorption non-singularity, most probably due to a larger fraction of the applied naphthalene diffusing to slow sorption sites. A dual resistance sorption model was able to accurately describe the data with two free parameters. However, parameter uncertainty resulted from the simultaneous optimization of the rate parameter, {alpha}, and K{sub om}. The combination of batch sorption experiments, input-response experiments, and model exercises give supporting evidence that sorption kinetics of hydrophobic organic compounds to soil OM are controlled by (i) rapid pore diffusion toward S{sub N2} ({alpha} = 0.1 h{sup {minus}1}) and (ii) slow diffusion into the soil organic matter structure ({alpha} = 0.01--0.001 h{sup {minus}1}).},

  doi          = {10.2136/sssaj1999.03615995006300020007x},

  url          = {https://www.osti.gov/biblio/678087},
  journal      = {Soil Science Society of America Journal},
number       = 2,

  volume       = 63,

  place        = {United States},

  year         = {Mon Mar 01 00:00:00 EST 1999},

  month        = {Mon Mar 01 00:00:00 EST 1999}

}

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