Sorption properties and behaviour at laboratory scale of selected pharmaceuticals using batch experiments

Kiecak, Aleksandra; Sassine, Lara; Boy-Roura, Mercè; Elsner, Martin; Mas‐Pla, Josep; Stumpp, Christine

doi:10.1016/j.jconhyd.2019.103500

Cited by 43 publications

(26 citation statements)

References 37 publications

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“…The relatively high K d values previously obtained for diclofenac (24 in sediment E and 240 in sediment V) in batch experiments appeared to be overestimated when compared to flow-through experiments, with results of 0.08 and 0.02 to 0.05, respectively. Differences were also observed for sediment G. Here, sorption was found in the batch experiments [31]; however, no retardation was observed in the column experiments.…”

Section: Comparison Of Batch and Column Studiessupporting

confidence: 49%

“…As mentioned above, we previously analyzed sorption processes in a batch study [31]. The sorption coefficients obtained in the column experiments were much lower than those obtained in the static batch experiments (from 2 times lower for atenolol in sediment V up to some thousands of times lower as for diclofenac in sediment V).…”

Section: Comparison Of Batch and Column Studiesmentioning

confidence: 94%

“…The sediment and groundwater, as well as the chemicals used in the experiment, were analogous to those described in Kiecak et al (2019) [31] (please note, sediment E from this study was described in the previous paper as E3). The sediment was either purchased (sediment G-coarse technical sand) or collected in two distinct field sites: Sediment V (sandy loam) in the Vistrenque alluvial aquifer in France [32,33] and sediment E (medium sand) in the Baix Fluvià fluvio-deltaic aquifer in Spain [34,35].…”

Section: Chemicals Sediment and Groundwatermentioning

confidence: 99%

“…A Kinetex C18 column (2.6 µm 100 Å, 150 × 3 mm; Phenomenex, Aschaffenburg, Germany) was used. The details on the method were the same as those presented in [31].…”

Section: Quantificationmentioning

confidence: 99%

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Column Experiments on Sorption Coefficients and Biodegradation Rates of Selected Pharmaceuticals in Three Aquifer Sediments

Kiecak

Breuer

Stumpp

2019

Water

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The presence of pharmaceuticals in the environment, and in groundwater, has been recognized as a great environmental concern. Biodegradation and sorption are the main processes leading to the removal of contamination from the water phase. The aim of this study was to determine the transport processes of selected pharmaceuticals (antipyrine, atenolol, carbamazepine, caffeine, diclofenac, ketoprofen, sulfamethoxazole) in selected sediments (coarse sand, medium sand, sandy loam) in laboratory experiments. Moreover, the impact of flow velocities on the sorption and degradation rates of the selected compounds was studied. Column experiments were performed at three flow velocities, under abiotic and biotic conditions, applying conservative (bromide) and reactive tracers (pharmaceuticals). From the breakthrough curves, retardation factors and degradation rates were determined and the influence of variable flow conditions on transport parameters was evaluated. Low observed concentrations and recoveries of atenolol indicated a strong influence of sorption on its transport. Diclofenac, caffeine, and carbamazepine were also affected by sorption but to a lesser extent. Sulfamethoxazole, ketoprofen, and antipyrine were recovered nearly completely, indicating an almost conservative transport behavior. Biodegradation was small for all the compounds, as the results from biotic and abiotic column experiments were similar. Transport of the tested pharmaceuticals was not influenced by different flow velocities, as similar modelled degradation rates and retardation factors were found for all tested flow velocities.often overlooked, which corresponds to ignoring the effect of different flow velocities on the fate of contaminants. Reducing the complexity at field sites, laboratory experiments in column studies can help to identify the specific sorption and biodegradation rates of pharmaceuticals.Column experiments are frequently used to study the transport of contaminants like micropollutants, such as pharmaceuticals [7]. Numerous studies have proven the usefulness of column experiments, as they are relatively fast, uncomplicated to manage, and their boundary conditions can be easily controlled. Moreover, different scenarios may be simulated, for example, managed aquifer recharge [8], seepage through the vadose zone [9], transport through an aquifer [10,11], and bank filtration [12][13][14].Column studies have been utilized to study the influence of physico-chemical conditions within an aquifer on pharmaceutical transport, with an emphasis on changes in pH [11], redox conditions [13,15], or temperature [16]. Also, the influence of the sediment type on transport behavior was studied and the following properties were found particularly crucial: Sediment grain size [17], available mineral surfaces [18], or total organic carbon content [19]. However, little is known on the impact of flow velocity on pharmaceutical transport in groundwater [20].The effect of pore-water velocity on contaminant transport has been presented in the literatur...

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Section: Comparison Of Batch and Column Studiessupporting

confidence: 49%

Section: Comparison Of Batch and Column Studiesmentioning

confidence: 94%

Section: Chemicals Sediment and Groundwatermentioning

confidence: 99%

“…A Kinetex C18 column (2.6 µm 100 Å, 150 × 3 mm; Phenomenex, Aschaffenburg, Germany) was used. The details on the method were the same as those presented in [31].…”

Section: Quantificationmentioning

confidence: 99%

See 2 more Smart Citations

Column Experiments on Sorption Coefficients and Biodegradation Rates of Selected Pharmaceuticals in Three Aquifer Sediments

Kiecak

Breuer

Stumpp

2019

Water

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“…included in the GWP explanatory variable were able to describe the antibiotic spatial variability in the Baix Fluvià alluvial aquifer, despite omitting the reactive properties of antibiotics. All of the parameters representing groundwater properties in the statistical analysis (i.e., chemical data) are easy to measure, but the reactive properties are highly variable, as shown by many laboratory experiments and literature references (e.g., reference [33]). The VP points out that a larger explanation of their spatial variability can barely be obtained, reflecting the fact that reactive transport processes are paramount, and they can unlikely be surrogated by hydrochemical and isotopic data.…”

Section: Discussionmentioning

confidence: 99%

Assessing the Influence of Environmental Factors on Groundwater Antibiotic Occurrence by Means of Variation Partitioning

Menció

Mas‐Pla

2019

Water

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The spatial distribution of antibiotics in alluvial aquifers presents a large variability caused by the joint action of several factors including hydrology, land use, and groundwater properties. In this study, the influences of these factors on the spatial variability of antibiotics is evaluated based on an extensive database of 47 wells located in the Baix Fluvià alluvial aquifer (NE Catalonia). Statistical methods such as redundancy and variation partitioning (VP) analyses, which are not commonly used in hydrogeological studies, are herein tested and used to estimate the effects of environmental factors on the observed antibiotic occurrence. Using VP, the total explained variation of the antibiotic distribution only reaches 18% of the total variability, meaning that the whole set of explanatory parameters is insufficient or inadequate to describe the occurrence of antibiotics and their concentration. The results point out that groundwater properties are the most representative parameters, while those related to antibiotic sources and aquifer susceptibility have lower influences. Omitting solute transport parameters that actually govern antibiotic fate (i.e., sorption coefficients and degradation rates) from the statistical analysis limited the success of the VP results. VP thus highlights the importance of researching antibiotic transport in groundwater by determining the reactive properties of these pollutants above other hydrogeochemical variables. We conclude that the present capacity to predict antibiotic existence at a specific location—for instance, a supply well—based on field data is still poor and unrepresentative, being an impediment for groundwater pollution management.

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Adsorption, Bioavailability and Microbial Toxicity of Diclofenac in Agricultural Soil

Prakathi

Mahanty

Lhamo

2020

Bull Environ Contam Toxicol

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Sorption properties and behaviour at laboratory scale of selected pharmaceuticals using batch experiments

Cited by 43 publications

References 37 publications

Column Experiments on Sorption Coefficients and Biodegradation Rates of Selected Pharmaceuticals in Three Aquifer Sediments

Column Experiments on Sorption Coefficients and Biodegradation Rates of Selected Pharmaceuticals in Three Aquifer Sediments

Assessing the Influence of Environmental Factors on Groundwater Antibiotic Occurrence by Means of Variation Partitioning

Adsorption, Bioavailability and Microbial Toxicity of Diclofenac in Agricultural Soil

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