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Journal articles on the topic 'Liquides denses en phase non aqueuse (DNAPL)'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Valletti, Nadia, Marcello A. Budroni, Istvan Lagzi, Nadia Marchettini, Margarita Sanchez-Dominguez, and Federico Rossi. "Interfacial Mass Transfer in Trichloroethylene/Surfactants/ Water Systems: Implications for Remediation Strategies." Reactions 2, no. 3 (2021): 312–22. http://dx.doi.org/10.3390/reactions2030020.

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The fate of dense non-aqueous phase liquids (DNAPLs) in the environment and the consequential remediation problems have been intensively studied over the last 50 years. However, a scarce literature is present about the mass transfer at the DNAPL/water interface. In this paper, we present a fast method for the evaluation of the mass transfer performance of a surfactant that can easily be employed to support an effective choice for the so-called enhanced remediation strategies. We developed a lab-scale experimental system modelled by means of simple ordinary differential equations to calculate t

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2

Feo, Alessandra, Riccardo Pinardi, Andrea Artoni, and Fulvio Celico. "Three-Dimensional High-Precision Numerical Simulations of Free-Product DNAPL Extraction in Potential Emergency Scenarios: A Test Study in a PCE-Contaminated Alluvial Aquifer (Parma, Northern Italy)." Sustainability 15, no. 12 (2023): 9166. http://dx.doi.org/10.3390/su15129166.

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Chlorinated organic compounds are widespread aquifer contaminants. They are known to be dense non-aqueous phase liquids (DNAPLs). Therefore, they are denser than water and immiscible with other fluids. Their migration into the environment in variably saturated zones can cause severe damage. For this reason, optimizing those actions that minimize the negative impact of these compounds in the subsurface is essential. This paper presented a numerical model simulating the free-product DNAPL migration and extraction through a purpose-designed pumping well in a potential emergency scenario. The nume

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3

Adegbola, A. A., T. Adeyemo, Y. O. Yakub, and A. A. Adeleke. "Impact of Magnetic Fields on the Efficiency of Dense Non-Aqueous Phase Liquid Removal from Unsaturated Zones Using Steam Injection." Journal of Energy Research and Reviews 16, no. 9 (2024): 28–40. http://dx.doi.org/10.9734/jenrr/2024/v16i9370.

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Unsaturated zone is of great importance in providing water and nutrients that are vital to the biosphere and the main factor controlling water movement from the land surface to the aquifer. Contamination of unsaturated zone by Dense Non-Aqueous Phase Liquids (NAPLs) has becoming major threat to human environment as a result of increasing concern with industrialization. The use of steam injection for remediation of porous media which are contaminated by DNAPLs has not given the desire recovery efficiency, hence the need for improvement in recovery efficiency has been a subject of continuous stu

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4

Jha, Shibani, and M. S. Mohan Kumar. "Multiphase models for simulating hot and slightly miscible DNAPL (dense non-aqueous phase fluids) in a saturated rock fracture under deformation." Water Science and Technology 59, no. 4 (2009): 755–62. http://dx.doi.org/10.2166/wst.2009.023.

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In the present study a two dimensional model is first developed to show the behaviour of dense non-aqueous phase liquids (DNAPL) within a rough fracture. To consider the rough fracture, the fracture is imposed with variable apertures along its plane. It is found that DNAPL follows preferential pathways. In next part of the study the above model is further extended for non-isothermal DNAPL flow and DNAPL-water interphase mass transfer phenomenon. These two models are then coupled with joint deformation due to normal stresses. The primary focus of these models is specifically to elucidate the in

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5

Cheng, Zhou, Guoping Lu, Ming Wu, et al. "The Effects of Spill Pressure on the Migration and Remediation of Dense Non-Aqueous Phase Liquids in Homogeneous and Heterogeneous Aquifers." Sustainability 15, no. 17 (2023): 13072. http://dx.doi.org/10.3390/su151713072.

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The spill pressure of the contaminant source is an important factor affecting the amount, location, form, and behavior of the dense non-aqueous phase liquids (DNAPLs) that plume in a contaminated subsurface environment. In this study, perchloroethylene (PCE) infiltration, distribution and, remediation via a surfactant-enhanced aquifer remediation (SEAR) technique for a PCE spill event are simulated to evaluate the effects of the spill pressure of the contaminant source on the DNAPLs’ behavior in two-dimensional homogeneous and heterogeneous aquifers. Five scenarios with different spill pressur

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6

Iravani, Mohammad Ali, Jacques Deparis, Hossein Davarzani, Stéfan Colombano, Roger Guérin, and Alexis Maineult. "Complex Electrical Resistivity and Dielectric Permittivity Responses to Dense Non-aqueous Phase Liquids' Imbibition and Drainage in Porous Media: A Laboratory Study." Journal of Environmental and Engineering Geophysics 25, no. 4 (2020): 557–67. http://dx.doi.org/10.32389/jeeg20-050.

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The effective techniques for remediation of sites polluted by dense non-aqueous phase liquids (DNAPLs) remains a challenge. Among the various technical monitoring methods, there is an increasing interest in studying the geophysical characteristics of contaminated soils, as indicators of the progress in clean-up programs. This work sought to investigate the variation of the electrical complex resistivity and the relative permittivity by analyzing the results obtained from spectral induced polarization (SIP) and time domain reflectometry (TDR). Different series of measurements during drainage an

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7

ROSSABI, J. "Recent Advances in Characterization of Vadose Zone Dense Non-Aqueous Phase Liquids (DNAPL) in Heterogeneous Media." Environmental and Engineering Geoscience 9, no. 1 (2003): 25–36. http://dx.doi.org/10.2113/9.1.25.

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8

Chu, Haibo, and Wenxi Lu. "Adaptive Kriging surrogate model for the optimization design of a dense non-aqueous phase liquid-contaminated groundwater remediation process." Water Supply 15, no. 2 (2014): 263–70. http://dx.doi.org/10.2166/ws.2014.108.

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The optimization model needs to call the simulation model to calculate the response under different conditions for many times, and this is computationally expensive and time-consuming. To solve this problem, surrogate models can be used to yield insight into the functional relationship between the design variables and the responses, instead of simulation models in the optimization. In this paper, an integrated optimization method based on adaptive Kriging surrogate models was proposed and applied to the cost optimization of a surfactant enhanced aquifer remediation process for dense non-aqueou

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9

Yang, Jun, and Caijie Wei. "Study on the Fine Characterization of Spatial Distribution and Predictive Modeling of Remediation of Site Pollution." Water 16, no. 21 (2024): 3154. http://dx.doi.org/10.3390/w16213154.

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The present study focuses on a site contaminated with halogenated hydrocarbons, utilizing a detailed inventory of contamination data to achieve the precise characterization of groundwater pollution. Employing MOFLOW-2000 software, a groundwater flow model was established for the study area. In conjunction with MT3DMS, a predictive model was constructed to simulate and forecast the spatiotemporal distribution of contaminant migration and attenuation following site remediation. The simulation area was delineated based on geographical features, with the vertical simulation range of strata also de

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10

Huang, Wei Hsiang, Yih Terng Sheu, Po Jen Lien, Yu Sung Hsiao, and Chih Ming Kao. "Investigation and Remedial Approach Development for a TCE Spill Site: A Case Study." Advanced Materials Research 912-914 (April 2014): 1884–87. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1884.

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A trichloroethene (TCE) plume has been discovered inside an industrial park located in Taiwan. The objectives of this study were to characterize the solvent spill site and prepare a corrective action plan (CAP) for site remediation. The following tasks have been performed under Taiwan Soil and Groundwater Remediation Act corrective action: (1) geophysical survey to verify the existence and fate of all potential contaminant sources in the vicinity of the avionics repair shop; (2) soil-gas survey and soil/groundwater analyses to delineate the lateral and vertical extent of contaminants in the su

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11

Dubé, Jean-Sébastien, Rosa Galvez-Cloutier, and Thierry Winiarski. "Heavy metal transport in soil contaminated by residual light non-aqueous phase liquids (LNAPLs)." Canadian Geotechnical Journal 39, no. 2 (2002): 279–92. http://dx.doi.org/10.1139/t01-113.

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This paper presents an experimental study on mixed soil contamination, more specifically on heavy metal behaviour in soil contaminated by residual non-aqueous phase liquids (NAPLs). Remediation of mixed contaminated sites is a complex technical goal because of the presence of physically and chemically different contaminants and potential interactions between them. Commonly encountered contaminants in mixed contaminated soils include light and dense organic liquids (LNAPLs, DNAPLs) and heavy metals. This study investigated interactions between three residual LNAPLs and three heavy metals (Cd, C

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12

Stewart, Mark, and Loren North. "A borehole geophysical method for detection and quantification of dense, non-aqueous phase liquids (DNAPL) in saturated soils." Journal of Applied Geophysics 60, no. 2 (2006): 87–99. http://dx.doi.org/10.1016/j.jappgeo.2005.12.004.

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13

Faria, Marcelo Reitor de Castro, and Ana Cristina Malheiros Gonçalves Carvalho. "Critical review of the environmental management of a DNAPL contaminated site in Resende, Rio de Janeiro, Brazil." Acta Scientiarum. Technology 46, no. 1 (2023): e64564. http://dx.doi.org/10.4025/actascitechnol.v46i1.64564.

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The current nonconformity of most Brazilian states regarding the environmental guidelines established by the Conama 420 resolution makes clear that there are still many challenges to be faced on the management field of contaminated sites. The analysis of a factual remediation operation in an industrial site in the city of Resende, Rio de Janeiro state, show that traditional site investigation techniques are still being applied as main tools of characterization, data collection and decision-making in the management of the area. The site has had its investigation start in the late 90’s through m

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14

Huang, Yi Chu, Shun Yi Huang, Shin Shian Chen, Chen Yao Ma, and Hung Chieh Chen. "Degradation Behaviors of Trichloroethylene by Permanganate." Advanced Materials Research 1051 (October 2014): 588–93. http://dx.doi.org/10.4028/www.scientific.net/amr.1051.588.

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Surfactant-enhanced permanganate oxidation (SEPO) technology utilizes the surfactant to mobilize and/or solubilize the dense-non-aqueous-phase liquids (DNAPLs) and then exploits the high oxidation capacity of permanganate (MnO4-) to oxidize them. SEPO technology has been shown as an effective way to remediate the aquifers contaminated with chlorinated organic pollutants such as trichloroethylene (TCE). Experiments were carried out with a series of continuous stir batch reactor to quantify the kinetic parameters of which MnO4- oxidizes the aqueous TCE in the presence of surfactant. It was found

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15

Philippe, Nicolas, Hossein Davarzani, Stéfan Colombano, Malorie Dierick, Pierre-Yves Klein, and Manuel Marcoux. "Experimental study of the temperature effect on two-phase flow properties in highly permeable porous media: Application to the remediation of dense non-aqueous phase liquids (DNAPLs) in polluted soil." Advances in Water Resources 146 (December 2020): 103783. http://dx.doi.org/10.1016/j.advwatres.2020.103783.

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16

Conte, Leandro, Salvador Cotillas, Andrés Sánchez-Yepes, David Lorenzo, and Aurora Santos. "LED visible light assisted photochemical oxidation of HCHs in aqueous phases polluted with DNAPL." February 27, 2023. https://doi.org/10.5281/zenodo.7680130.

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This work focuses on removing hexachlorocyclohexanes (HCHs) found in groundwater polluted with dense non-aqueous phase liquids (DNAPLs) by photo-oxidation with hydrogen peroxide or persulfate using LED visible light and ferrioxalate as the catalyst. Single oxidation tests were also performed to evaluate the contribution of LED-vis light on HCHs removal. Results show that it is possible to attain the degradation of HCHs up to 85% in 420 min with persulfate, whereas percentages lower than 40% are obtained when using hydrogen peroxide. Using both oxidants in the presence of ferrioxalate and LED v

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17

Miao, Tiansheng, Jiayuan Guo, Guanghua Li, and He Huang. "Inversion-based identification of DNAPLs-contaminated groundwater based on surrogate model of deep convolutional neural network." Water Supply, December 22, 2022. http://dx.doi.org/10.2166/ws.2022.437.

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Abstract This paper combine theoretical analysis with practical examples to examine outstanding issues in research on the inversion-based identification of dense non-aqueous phase liquids (DNAPLs) in groundwater. We first generalize the relevant geological and hydrogeological conditions to establish a conceptual model of groundwater contamination. We then use it to formulate a preliminary model of the contamination of groundwater by DNAPLs based on multi-phase flow to describe the mechanism of migration of these pollutants. Following this, a surrogate model is established by training and valid

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18

Parker, Beth L., Robert W. Gillham, and Philipp Wanner. "A novel laboratory method for determining the diffusive mass flux of dense non-aqueous phase liquids (DNAPLs) into natural clays." Journal of Contaminant Hydrology, June 2025, 104651. https://doi.org/10.1016/j.jconhyd.2025.104651.

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