Multidimensional analytical models for isotope ratios in groundwater pollutant plumes of organic contaminants undergoing different biodegradation kinetics

Höhener, Patrick; Atteia, Olivier

doi:10.1016/j.advwatres.2010.03.016

Cited by 29 publications

(10 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, additional information about plume mixing in complicated groundwater flow systems such as fractured aquifers may be obtained using a multi-isotope approach. Several authors have recently employed reactive transport models to help analyse isotope data and quantify degradation and fate of chlorinated solvents at complex field sites (Hohener and Atteia, 2010;Pooley et al, 2009;Van Breukelen et al, 2005;Wiegert et al, 2012). This approach is essential to interpret isotopic values of parent and degradation compounds at sites where sequential degradation occurs (Van Breukelen et al, 2005;Wiegert et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Multi-isotope (carbon and chlorine) analysis for fingerprinting and site characterization at a fractured bedrock aquifer contaminated by chlorinated ethenes

Palau

Marchesi

Chambon

et al. 2014

Science of The Total Environment

View full text Add to dashboard Cite

The use of compound specific multi-isotope approach (C and Cl) in the characterization of a chlorinated ethenes contaminated fractured aquifer allows the identification of several sources and contaminant plumes, as well as the occurrence of biodegradation and mixing processes. The study site is located in Spain with contamination resulting in groundwater concentrations of up to 50mg/L of trichloroethene (TCE), the most abundant chlorinated ethene, and 7 mg/L of tetrachloroethene (PCE). The potential sources of contamination including abandoned barrels, an underground tank, and a disposal lagoon, showed a wide range in δ(13)C values from -15.6 to -40.5‰ for TCE and from -18.5 to -32.4‰ for PCE, allowing the use of isotope fingerprinting for tracing of the origin and migration of these contaminants in the aquifer. In contrast, there is no difference between the δ(37)Cl values for TCE in the contaminant sources, ranging from +0.53 to +0.66‰. Variations of δ(37)Cl and δ(13)C in the different contaminant plumes were used to investigate the role of biodegradation in groundwater. Moreover, the isotopic data were incorporated into a reactive transport model for determination of whether the isotope pattern observed downstream from the tank's source could be explained by the simultaneous effect of mixing and biodegradation. The results demonstrate that a multi-isotope approach is a valuable tool for characterization of complex sites such as fractured bedrock aquifer contaminated by multiple sources, providing important information which can be used by consultants and site managers to prioritize and design more successful remediation strategies.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-isotope (carbon and chlorine) analysis for fingerprinting and site characterization at a fractured bedrock aquifer contaminated by chlorinated ethenes

Palau

Marchesi

Chambon

et al. 2014

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…The fish sensitivity to low levels of DO is species-specific, but most species begin to be affected when the concentration falls to values around 2-4 mg/L, below which mortality usually occurs [54]. These low levels are frequently associated with phenomena such as hot, cloudy weather, organic overload, algae die-offs, or heavy thunderstorms [38].…”

Section: Discussionmentioning

confidence: 99%

Human Population Effects on the Ulsoor Lake Fish Survival

et al. 2018

View full text Add to dashboard Cite

In this paper, we introduce a model to study the effects of human populations on fish survival in aquatic media. Directly, this occurs by fishing. Indirectly instead this is related to other human actions that lead to organic pollution and consequently low dissolved oxygen(DO) levels, thereby harming the aquatic fauna. Mathematically, we consider various nonlinear processes involving human population, organic pollutants, bacteria, DO and fish population. In the present study, our aim is to investigate the effect of depleted level of DO on the survival of fish populations in such an aquatic system. The case study in consideration is represented by the Ulsoor lake, Bengaluru, India. Into it, huge amounts of sewage were discharged and resulted in reduction of DO level and massive fish mortality. Equilibria are analyzed for feasibility and stability, substantiated via numerical simulations. Global sensitivity analysis identifies the important parameters having a significant impact on the fish population. The Partial Rank Correlation Coefficients (PRCCs) values of fish population in the lake with respect to input parameters of the system show that the growth rate of humans in the lake watershed has maximum negative correlation while the growth in the fish population due to DO has maximum positive correlation with the density of fish population in the lake. The results show that increase in human population may decrease fish population in the system to very low values. However, by controlling additional dissolved organic loads coming from domestic sewage, farm waste and many other sources, the level of DO can be brought back to values that allow fish survival. Maintaining it at these levels would preserve the ecosystem.

show abstract

“…For isotope modeling, we use the isotope approach (Hunkeler et al ; Höhener and Atteia ) where each isotope is modeled separately. Light (l) and heavy (h) isotopes are modeled using different λ caused by kinetic isotope fractionation during bond cleavage (fractionation factor α react ), and using different R f , i caused by equilibrium isotope effects by sorption (fractionation factor α sorption , Equations 4 through 6, Höhener and Yu ).…”

Section: Analytical Solution and Its Implementationmentioning

confidence: 99%

“…Analytical or numerical models for compound‐specific isotope ratios in aquifer pollutants have been developed. Höhener and Atteia () showed with analytical models on MAPLE worksheets that only the exact analytical solution in BIOSCREEN‐AT gives correct isotope ratios at lateral plume margins. However, all current isotope models are quite demanding in operational skills and partly also in CPU time and therefore have not been widely exploited.…”

Section: Introductionmentioning

confidence: 99%

Simulating Stable Isotope Ratios in Plumes of Groundwater Pollutants with BIOSCREEN‐AT‐ISO

Höhener¹,

Julien

et al. 2016

Groundwater

Self Cite

View full text Add to dashboard Cite

BIOSCREEN is a well-known simple tool for evaluating the transport of dissolved contaminants in groundwater, ideal for rapid screening and teaching. This work extends the BIOSCREEN model for the calculation of stable isotope ratios in contaminants. A three-dimensional exact solution of the reactive transport from a patch source, accounting for fractionation by first-order decay and/or sorption, is used. The results match those from a previously published isotope model but are much simpler to obtain. Two different isotopes may be computed, and dual isotope plots can be viewed. The dual isotope assessment is a rapidly emerging new approach for identifying process mechanisms in aquifers. Furthermore, deviations of isotope ratios at specific reactive positions with respect to "bulk" ratios in the whole compound can be simulated. This model is named BIOSCREEN-AT-ISO and will be downloadable from the journal homepage.

show abstract

Multidimensional analytical models for isotope ratios in groundwater pollutant plumes of organic contaminants undergoing different biodegradation kinetics

Cited by 29 publications

References 36 publications

Multi-isotope (carbon and chlorine) analysis for fingerprinting and site characterization at a fractured bedrock aquifer contaminated by chlorinated ethenes

Multi-isotope (carbon and chlorine) analysis for fingerprinting and site characterization at a fractured bedrock aquifer contaminated by chlorinated ethenes

Human Population Effects on the Ulsoor Lake Fish Survival

Simulating Stable Isotope Ratios in Plumes of Groundwater Pollutants with BIOSCREEN‐AT‐ISO

Contact Info

Product

Resources

About