Emerging organic pollutants in the vadose zone of a soil aquifer treatment system: Pore water extraction using positive displacement

Sopilniak, Alexander; Elkayam, Roy; Rossin, Anna Voloshenko; Lev, Ovadia

doi:10.1016/j.chemosphere.2017.10.010

Cited by 23 publications

(15 citation statements)

References 73 publications

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“…As shown in Figure A3 in the Appendix A, all results were well fitted by applying the Langmuir-Hinselwood model to a first order kinetics. From the value of the kinetic constants the Electrical Energy per Order of magnitude of removal (E EO ) of carbamazepine during investigated treatments was calculated according to Equation (1).…”

Section: Degradation Of Carbamazepinementioning

confidence: 99%

“…Organic micropollutants represent a group of contaminants of emerging concern (CECs) contained in the effluents of wastewater treatment plants. This class of substances includes pharmaceutical and personal care products, fire retardants, plasticizers, steroidal hormones, antibiotic resistance genes and many other groups of compounds [1,2]. Unfortunately, sometimes information about their toxicity are insufficient to define their maximal levels in drinking water.…”

Section: Introductionmentioning

confidence: 99%

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Degradation of Carbamazepine by Photo(electro)catalysis on Nanostructured TiO2 Meshes: Transformation Products and Reaction Pathways

et al. 2020

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Carbamazepine (CBZ) is a pharmaceutical compound recalcitrant to conventional wastewater treatment plants and widely detected in wastewater bodies. In the present study, advanced oxidation processes for carbamazepine removal are investigated, with particular regard to the degradation pathways of carbamazepine by photoelectrocatalysis and conventional photocatalysis. Photoelectrocatalysis was carried out onto TiO2 meshes obtained by Plasma Electrolytic Oxidation, a well-known technique in the field of industrial surface treatments, in view of an easy scale-up of the process. By photoelectrocatalysis, 99% of carbamazepine was removed in 55 min while only 65% removal was achieved by photolysis. The investigation of the transformation products (TPs) was carried out by means of UPLC-QTOF/MS/MS. Several new TPs were identified and accordingly reaction pathways were proposed. Above 80 min the transformation products disappear, probably forming organic acids of low-molecular weight as final degradation products. The results demonstrated that photoelectrocatalysis onto TiO2 meshes obtained by plasma electrolytic oxidation is a useful alternative to common advanced oxidation processes as wastewater tertiary treatment aimed at removing compounds of emerging concern.

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Section: Degradation Of Carbamazepinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Degradation of Carbamazepine by Photo(electro)catalysis on Nanostructured TiO2 Meshes: Transformation Products and Reaction Pathways

et al. 2020

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“…Physicochemical variables are closely related to the stability and mobility of EOCs. For example, variations in pH control the protonation/deprotonation reactions (Tolls, 2001), temperature affects the degradation of antibiotics (Doi and Stoskopf, 2000), dissolved oxygen in groundwater can change aerobic biodegradation rates of EOCs (Al-Rajab et al, 2010;Barbieri et al, 2011), and thickness of the unsaturated zone is related to the potential degradation of EOCs (Sopilniak et al, 2018). On the other hand, major and trace elements such as NO3 and Se have been related to incidental or induced infiltration of sewage water (Dávila Pórcel et al, 2012), therefore qualifying as suitable markers of anthropogenic influence in the aquifer environment.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of pharmaceuticals and personal care products in the urban aquifer of Zaragoza (Spain) and its relationship with intensive shallow geothermal energy exploitation

García‐Gil

Schneider

Mejı́as

et al. 2018

Journal of Hydrology

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A steady increase in the consumption of pharmaceuticals and personal-care products worldwide is increasing their occurrence in the biosphere. The current study describes the abundance of 42 selected emerging organic contaminants (EOCs), including human and veterinary antibiotics, UV-filters and analgesics in the groundwater of the urban aquifer of Zaragoza (Spain), which is affected by intensive exploitation of shallow geothermal resources. The presence of groundwater heat pump systems in the aquifer studied offered the opportunity to study the occurrence of EOCs in relation to groundwater temperature and other physicochemical effects derived from this technology. Analysis of the data obtained allowed us to identify statistically significant relationships between the presence of EOCs and temperature, as well as other physicochemical and geochemical properties of groundwater. The results obtained suggest that temperature is a minor factor controlling the degradation of the organic compounds analysed compared to the oxygen input from groundwater heat pump systems which is possibly increasing the aerobic redox conditions, thus preventing the degradation of organic pollutants. Intensive use of shallow geothermal resources therefore seems to contribute in the prevalence of such compounds in the aquifer close to geothermal systems.

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“…MAR was widely implemented in arid and semiarid regions around the World, including the United States (Lacher et al, 2014;Petrides et al, 2015;Scanlon et al, 2016;Schmidt et al, 2012), Australia (Bekele et al, 2014;Dillon et al, 2010;Ward & Dillon, 2012), Europe, and elsewhere (Gowrisankar et al, 2017;Sprenger et al, 2017). The objectives of MAR include, but not limited to, augmenting groundwater resources in arid and semiarid regions (Asano, 1985;Beganskas & Fisher, 2017;Bouwer, 1999), reducing seawater intrusion or land subsidence due to excessive pumping of groundwater (Garcia-Menendez et al, 2018;Shammas, 2008;Shi et al, 2016), improving the quality of treated waste water or desalinated seawater through soil-aquifer treatment or geo-purification (Bouwer, 1991;Elkayam, Sopliniak, et al, 2015;Elkayam, Michail, et al, 2015;Ganot et al, 2017;Ganot et al, 2018;Sharma & Kennedy, 2017;Sopilniak et al, 2018;Tsangaratos et al, 2017), and using aquifers as water conveyance systems (Bouwer, 2002;Kawo et al, 2018). There are several different ways to implement MAR in practices, including direction of water to land surface through canals, irrigation furrows or sprinkler systems, and injection of water into the subsurface through wells.…”

Section: Introductionmentioning

confidence: 99%

Aquifer Recharge Using a Vadose Zone Infiltration Well

Liang

Zhang

2018

Water Resources Research

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Vadose zone infiltration well (VZW) is an important method to implement managed aquifer recharge (MAR) when groundwater table is relatively deep or sufficiently permeable soils at ground and/or sizable land areas for surface infiltration systems are not available. However, the theoretical model for this kind of artificial recharge has rarely been developed. A mathematical model for the coupled unsaturated‐saturated flow process induced by a VZW is presented in this study with the purpose of understanding the overall hydrodynamics of unsaturated flow and recharge efficiency. Semianalytical solutions for hydraulic heads and recharge rate are derived using Laplace‐Hankel transforms. The solutions are tested using a finite‐element numerical solution built with COMSOL. The performance and capacity of VZW are assessed for different unsaturated zone parameters and well structures. For the case of an unsaturated zone with a small storage capacity, a greater proportion of injected water will be stored in the saturated zone, thus is a favored situation for the implement of MAR using VZWs. Both anisotropy and infiltration well structures have nonnegligible effects on the recharge rate of the saturated zone at early times but have negligible influence at later times. The proposed semianalytical solutions can be used to estimate unsaturated parameters and can also be used to assess the effectiveness of VZWs for the purpose of MAR.

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Emerging organic pollutants in the vadose zone of a soil aquifer treatment system: Pore water extraction using positive displacement

Cited by 23 publications

References 73 publications

Degradation of Carbamazepine by Photo(electro)catalysis on Nanostructured TiO2 Meshes: Transformation Products and Reaction Pathways

Degradation of Carbamazepine by Photo(electro)catalysis on Nanostructured TiO2 Meshes: Transformation Products and Reaction Pathways

Occurrence of pharmaceuticals and personal care products in the urban aquifer of Zaragoza (Spain) and its relationship with intensive shallow geothermal energy exploitation

Aquifer Recharge Using a Vadose Zone Infiltration Well

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