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Breedveld, Gijs D.; Roseth, Roger; Sparrevik, Magnus; Hartnik, Thomas; Hem, Lars J.

doi:10.1023/a:1023961213839

Cited by 88 publications

(21 citation statements)

References 16 publications

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“…Previous studies reported different behaviors of benzotriazole biodegradation during MAR ranging from highly persistent to microbial processes [40] over preferred biodegradation under oxic conditions to biodegradation even under anoxic conditions with biodegradation half-lives of 29 ± 2 days [41,42]. However, our results confirm biodegradation under oxic conditions whereas no removal was achieved under anoxic conditions (Figure 4).…”

Section: Torc Removal During Smartsupporting

confidence: 54%

Advancing Sequential Managed Aquifer Recharge Technology (SMART) Using Different Intermediate Oxidation Processes

Hellauer

Mergel

Ruhl

et al. 2017

Water

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Abstract:Managed aquifer recharge (MAR) systems are an efficient barrier for many contaminants. The biotransformation of trace organic chemicals (TOrCs) strongly depends on the redox conditions as well as on the dissolved organic carbon availability. Oxic and oligotrophic conditions are favored for enhanced TOrCs removal which is obtained by combining two filtration systems with an intermediate aeration step. In this study, four parallel laboratory-scale soil column experiments using different intermittent aeration techniques were selected to further optimize TOrCs transformation during MAR: no aeration, aeration with air, pure oxygen and ozone. Rapid oxygen consumption, nitrate reduction and dissolution of manganese confirmed anoxic conditions within the first filtration step, mimicking traditional bank filtration. Aeration with air led to suboxic conditions, whereas oxidation by pure oxygen and ozone led to fully oxic conditions throughout the second system. The sequential system resulted in an equal or better transformation of most TOrCs compared to the single step bank filtration system. Despite the fast oxygen consumption, acesulfame, iopromide, iomeprol and valsartan were degraded within the first infiltration step. The compounds benzotriazole, diclofenac, 4-Formylaminoantipyrine, gabapentin, metoprolol, valsartan acid and venlafaxine revealed a significantly enhanced removal in the systems with intermittent oxidation compared to the conventional treatment without aeration. Further improvement of benzotriazole and gabapentin removal by using pure oxygen confirmed potential oxygen limitation in the second column after aeration with air. Ozonation resulted in an enhanced removal of persistent compounds (i.e., carbamazepine, candesartan, olmesartan) and further increased the attenuation of gabapentin, methylbenzotriazole, benzotriazole, and venlafaxine. Diatrizoic acid revealed little degradation in an ozone-MAR hybrid system.

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Section: Torc Removal During Smartsupporting

confidence: 54%

Advancing Sequential Managed Aquifer Recharge Technology (SMART) Using Different Intermediate Oxidation Processes

Hellauer

Mergel

Ruhl

et al. 2017

Water

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“…This, in part, has been due both to the lack of standard analytical and instrumental methodologies for the analysis of triazoles and to the difficulty of obtaining soil samples from active airports. Despite these limitations, triazoles have been detected in airport soils at measurable concentrations (Breedveld et al 2003;Cancilla et al 2003). In one case, triazoles were detected in soils 2 years after the cessation of deicing operations (Breedveld et al 2003).…”

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confidence: 99%

“…Despite these limitations, triazoles have been detected in airport soils at measurable concentrations (Breedveld et al 2003;Cancilla et al 2003). In one case, triazoles were detected in soils 2 years after the cessation of deicing operations (Breedveld et al 2003). As soils can serve as a potential sink for triazoles and impact the movement of triazoles into ground and surface waters, a better understanding of the extent to which triazoles can be found in airport soils is needed.…”

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confidence: 99%

Detection of Triazole Deicing Additives in Soil Samples from Airports with Low, Mid, and Large Volume Aircraft Deicing Activities

McNeill

Cancilla

2008

Bull Environ Contam Toxicol

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Soil samples from three USA airports representing low, mid, and large volume users of aircraft deicing fluids (ADAFs) were analyzed by LC/MS/MS for the presence of triazoles, a class of corrosion inhibitors historically used in ADAFs. Triazoles, specifically the 4-methyl-1H-benzotriazole and the 5-methyl-1H-benzotriazole, were detected in a majority of samples and ranged from 2.35 to 424.19 microg/kg. Previous studies have focused primarily on ground and surface water impacts of larger volume ADAF users. The detection of triazoles in soils at low volume ADAF use airports suggests that deicing activities may have a broader environmental impact than previously considered.

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“…This might be why it disappears in the groundwater. Breedveld et al [66] reported efficient sorption at different pH values (3 and 7) to organic material such as peat and compost. The sorption could be of a hydrophobic nature at these pH values because the benzotriazole is present in unprotonated form [67].…”

Section: Dissipationmentioning

confidence: 99%

Dissipation of Micropollutants in a Rewetted Fen Peatland: A Field Study Using Treated Wastewater

Maassen

Richter

Coors

et al. 2017

Water

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Abstract:In the present study, a mixture of treated wastewater and surface water was used to rewet a degraded fen peatland site during a three-year rewetting experiment. We studied the behavior and effects of micropollutants by means of hydrological, physico-chemical, microbiological and ecotoxicological monitoring. The highest concentrations of micropollutants in the treated wastewater were found for the pharmaceuticals carbamazepine and diclofenac, some metabolites, the sweetener acesulfame, tolyl-and benzotriazole and diatrizoate. In the underlying, shallow groundwater where treated wastewater application for rewetting had been expected to have the greatest impact due to seeping and evapotranspiration processes, only a sporadic occurrence of micropollutants was found. The influence of dilution by groundwater movements was examined by applying a geohydrological model. The sorption of micropollutants onto the peaty soil also played a role, as found for carbamazepine. Further processes such as photolysis, microbial decay under low redox conditions and plant uptake can be assumed to be relevant for the removal of many substances. Ecotoxicity tests with the soil before and after rewetting did not indicate any negative impact on the soil habitat quality by wastewater application, but clearly pointed at ecotoxicologically relevant geogenic arsenic concentrations at the study site. Although a positive effect on receiving surface water systems is expected if wastewater is applied on land instead of discharged to water bodies, the rewetted soil may turn into a sink for micropollutants in the long term. Hence, the findings of the present field study encourage further investigations in order to identify the governing processes in the elimination of micropollutants in rewetted peatlands flooded with treated wastewater.

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Cited by 88 publications

References 16 publications

Advancing Sequential Managed Aquifer Recharge Technology (SMART) Using Different Intermediate Oxidation Processes

Advancing Sequential Managed Aquifer Recharge Technology (SMART) Using Different Intermediate Oxidation Processes

Detection of Triazole Deicing Additives in Soil Samples from Airports with Low, Mid, and Large Volume Aircraft Deicing Activities

Dissipation of Micropollutants in a Rewetted Fen Peatland: A Field Study Using Treated Wastewater

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