Modeling Surfactant LAS Influenced PAHs Migration in Soil Column

Chen, J.; Wang, X. J.; Hu, Jundong; Tao, Shu

doi:10.1007/s11270-006-9164-4

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…Properties of the selected HMW PAH compounds are shown on Table 1 as presented by Chen et al (2006). They are hydrocarbon compounds of high molecular weight with carbon rings of between 4-6.…”

Section: Physical and Chemical Properties Of Hmw Pahsmentioning

confidence: 99%

Adsorption and Distribution of Selected High Molecular Weight Polycyclic Aromatic Hydrocarbons in a Typical Coastal Sand Deposit

Patrick¹,

Christain²

2018

American Journal of Engineering and Applied Sciences

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Contaminant migration study through soil medium is a veritable tool for a match towards sustainable groundwater protection. It is also essential to predict the fate and Transport of pollutants and to evaluate pollution risks. In this study, migration and distribution of High Molecular Weight (HMW) Polycyclic Aromatic Hydrocarbons (PAHs) through a coastal sand deposit of a wetland was investigated. Flow simulation of the PAHs to determine the migration of the selected HMW was carried out by soil column method. With the help of gravity, the PAHs polluted wastewater collected from the study site was made to pass through a soil column. The analysis of the pore water collected as exit solution showed apparent concentration differences of various selected (HMW) PAHs from the original concentrations. The relative concentrations with respect to pore water assumed dome curves in which various selected (HMW) PAH concentrations rose gradually to the peak then decreased and tailed down with increasing pore volume effluents. The observed concentration differences was attributed to adsorption. Concentration values of the PAHs adsorbed onto the soil is of the following order; Benzo(b)flouranthene>Benzo(K)flourathene>1,2,3-cd pyrene >Dibenzo(a,h)anthrene> Benzo(a)pyrene > Chrysene > Benzo(a)anthrene. Distribution of the selected (HMW) PAHs within the soil column was also investigated. There was significant percentage asymmetric fixation of Benzo(b)flouranthene, Benzo(a)pyrene, Chrysene, 1,2,3-cd pyreneand Benzo(K)flourathene at the upper segment (0-4 and 4-9 cm) of the soil column. On the other hand, retentions of Dibenzo(a,h)anthrene and Benzo(a)anthrene were equally significant at the lower segment (9-15 cm). Despite the asymmetric fixation of Benzo(a)pyrene and Chrysene at the upper segment of the column, their concentrations and that of Benzo(a)anthrene) compound were significant in the exit solution. However, Migration and distributions of the HMW PAHs on the soil under investigation were essentially the functions of their chemical structures, solubility and to an extent the molecular weights. Given the distribution and migration pattern of the selected (HMW), Dibenzo(a,h)anthrene, Benzo(a)pyrene, Chrysene and Benzo(a)anthrene have great potentials to migrate further down the subsurface and to the aquifer to compromise the integrity of the groundwater in the wetland.

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Section: Physical and Chemical Properties Of Hmw Pahsmentioning

confidence: 99%

Adsorption and Distribution of Selected High Molecular Weight Polycyclic Aromatic Hydrocarbons in a Typical Coastal Sand Deposit

Patrick¹,

Christain²

2018

American Journal of Engineering and Applied Sciences

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“…Uma metodologia estatística foi empregada para classificar os vários tipo de solo com base nas suas características físicas e químicas e também para identificar mudanças relativas em cada tipo de solo após um extenso período de aplicação do efluente. Chen et al (2006) estudaram o transporte de um hidrocarboneto em colunas de solo artificialmente contaminado, determinando as curvas de concentração ao longo do tempo. Em seguida utilizaram um experimento de batelada auxiliar para determinar os fatores de retardamento.…”

Section: Experimentos Em Colunaunclassified

Estimativa simultânea de parâmetros hidráulicos e de transporte em estéreis de mineração de urânio

Oliveira¹,

Souza-Santos²

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The present work aims to simultaneously estimate the hydraulic and transport parameters related to the material of one of the waste rock piles (Waste Rock Pile 4) from the Poços de Caldas uranium mining and milling facility. Before performing the estimation, it was necessary to study the chemical species that are dissolved from this material by the climate action, knowing a priori that the material is rich in pyrite (iron sulfide, FeS 2 ). In order to follow the pyrite oxidation process within a controlled environment, an experimental apparatus called Acid Drainage Experiment was assembled. During tests, concentrations of various stable and radioactive chemical elements were determined in the liquid as well in the solid material before and after the tests. In addition, the total mass (or activity) dissolved, the rate of dissolution and the percentage of dissolution were calculated. Results showed which species are more easily dissolved and those that should be followed in contamination studies. The simultaneous estimation of the hydraulic and transport parameters was accomplished through the so called Solute Transport Experiment combined with the software Hydrus-1D. This software provides the numerical solution of an adequate model, using the Levenberg-Marquardt Technique for parameter estimation. The saturation water content θ s , the saturation hydraulic conductivity K s and the dispersion coefficient D were estimated. Results showed that the parameter D was well estimated, followed by θ s and K s .

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Effects of pH and ionic strength on sulfamethoxazole and ciprofloxacin transport in saturated porous media

Chen

Gao

et al. 2011

Journal of Contaminant Hydrology

129

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Modeling Surfactant LAS Influenced PAHs Migration in Soil Column

Cited by 5 publications

References 31 publications

Adsorption and Distribution of Selected High Molecular Weight Polycyclic Aromatic Hydrocarbons in a Typical Coastal Sand Deposit

Adsorption and Distribution of Selected High Molecular Weight Polycyclic Aromatic Hydrocarbons in a Typical Coastal Sand Deposit

Estimativa simultânea de parâmetros hidráulicos e de transporte em estéreis de mineração de urânio

Effects of pH and ionic strength on sulfamethoxazole and ciprofloxacin transport in saturated porous media

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