Spatial and Temporal Stability of Major and Trace Element Leaching in Urban Stormwater Sediments

Drapeau, Clémentine; Delolme, Cécile; Chatain, Vincent; Gautier, Mathieu; Blanc, D.; Benzaazoua, Mostafa; Lassabatère, Laurent

doi:10.4236/ojss.2017.711025

Cited by 9 publications

(9 citation statements)

References 25 publications

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“…The complete dissolution of calcite under acidic conditions was already reported by other authors (Drapeau et al, 2017). On the contrary, a higher fraction of sulfur was leached under alkaline condition (maximum release of 43%).…”

Section: Leaching Of Major Elementssupporting

confidence: 78%

Leaching behavior of major and trace elements from sludge deposits of a French vertical flow constructed wetland

Kania

Gautier

Blanc

et al. 2019

Science of The Total Environment

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Surface sludge deposits were collected from a French Vertical Flow Constructed Wetland (French VFCW) sewage treatment plant. The objectives were to characterize the retention of major elements and trace metals within the sludge deposits particles under regular operating conditions, and the influence of extreme pH conditions on their potential release which may occur in situations when the plant malfunctions or after land application of the dredged sludge. A sequential extraction protocol was first used to assess the distribution of the elements within the sludge deposits. Results showed that most of Cu and Pb were associated to organic matter within the oxidizable fraction. Zn, Ni and Cd were distributed in several fractions, notably bound to Fe-Mn oxides and associated to organic matter. Cr was analyzed mostly in the residual fraction. Aliquot fractions of sludge deposits were also submitted to Acid and Base Neutralization Capacity tests (ANC-BNC) where the samples were suspended into acidic or alkaline aqueous solutions, and the solutions analyzed after 48 h contact time. Results showed a pH-dependent leaching profile for all monitored elements. The role of organic matter was observed for almost all metals. It was particularly dominant for Cu which was leached more extensively under alkaline than acidic conditions. Since Cu is not an amphoteric element, this leaching pattern was attributed to the leaching of organic matter which followed a similar pH-dependent profile than Cu. Spectrometric indices were used to characterize soluble organic compounds. Results showed that complex and humified dissolved organic compounds were mostly released under alkaline conditions.

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Section: Leaching Of Major Elementssupporting

confidence: 78%

Leaching behavior of major and trace elements from sludge deposits of a French vertical flow constructed wetland

Kania

Gautier

Blanc

et al. 2019

Science of The Total Environment

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“…7). Stormwaters contain mostly inorganic particles (i.e., sand, gravel, clay) as a result of the washout of urban areas and are theoretically depleted in DTRs [16], whereas wastewaters contain mostly organic particles and are the primary source of DTRs [18,35]. However, during rain events, a mix between wastewater and stormwaters in sewers occurred, potentially allowing Fig.…”

Section: Adsorption Mechanisms Vs Excreted Amountmentioning

confidence: 99%

“…However, several others have highlighted that the vertical distribution of DTRs and other contaminants within sedimentary archives makes them suitable for the historical reconstruction of drug use [10][11][12]. Among these works, few studies have described the distribution of contaminants within decantation tanks, directly in the sewer system [13][14][15][16], as in this type of installation, sediments are generally coarse and considered unfavorable for the trapping of organic molecules due to limited specific surface areas [17,18]. One of the major advantages of decantation tanks, however, is their position upstream in the sewer network and therefore very close to excretion/production areas.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of drug target residues within decantation tank sediments: a good clue to assess their historical excretion?

Thiebault

Fougère

Simonneau

et al. 2021

Sustain Environ Res

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This study investigated the potential of sediments accumulated in sewer systems to record human activities through the occurrence of drug target residues (DTR). The installation studied is 17 m deep underground decantation tank that traps the coarse fractions of a unitary sewer system (northern part of Orléans, France), collecting both stormwater and wastewater. The sediments deposited in this tank could constitute a nonesuch opportunity to study the historical evolution of illicit and licit drug consumption in the catchment, however, the deposition processes and the record of DTRs remain largely unknown at present. Five cores were acquired from 2015 to 2017. One hundred fifty-two sediment samples were extracted using a mixture of ultra-pure water:methanol (1:1) prior to analysis of the extracts by high-pressure liquid chromatography coupled to tandem mass spectrometry. Several classical sedimentological analyses such as total organic carbon, facies description and granulometry were also performed on these samples, in order to understand the most important factors (e.g., physico-chemical properties of the DTRs, solid type, assumed load in wastewater) impacting their deposition.The key role of the speciation of DTRs was highlighted by the higher contents in neutral and anionic DTRs in organic layers, whereas only cationic DTRs were found in mineral layers. The considerable modifications in the sediments’ properties, generated by distinct origins (i.e., stormwater or wastewater), are therefore the most important drivers that must be taken into account when back-calculating the historical patterns of drug consumption from their DTR concentrations in decantation tank sediments. Further research remains necessary to fully understand the deposition process, but this study provides new clues explaining these temporal evolutions.

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“…All of these interactions are featured by the chemical, physicochemical, mineralogical, and physical properties of water, dissolved species, and surfaces. pH remains one of the key factors controlling the dissolution and desorption of mineral elements [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies have provided information on the total concentrations of trace metals, and the role of physicochemical conditions on pollutant release via batch approaches or selective extractions [18][19][20][21][22][23][24][25]. The characterization of trace metal speciation is still carried out sporadically by micro-analysis or indirectly by sequential extractions.…”

Section: Introductionmentioning

confidence: 99%

Lead Mobilization and Speciation in Mining Waste: Experiments and Modeling

Drapeau¹,

Argane

Delolme

et al. 2021

Minerals

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Mining produces significant amounts of solid mineral waste. Mine waste storage facilities are often challenging to manage and may cause environmental problems. Mining waste is often linked to contaminated mine drainage, including acidic waters with more or less elevated concentrations of trace metals such as lead. This work presents a study on the mobilization of lead from waste from two typical mining sites: Zeida and Mibladen, two now-closed former Pb–Zn mines in the Moulouya region of Morocco. Our research investigates the mobilization potential of Pb from the waste of these mines. The study involved acid–base neutralization capacity tests (ANC–BNC) combined with geochemical modeling. Experimental data allowed for the quantification of the buffering capacity of the samples and the mobilization rates of lead as a function of pH. The geochemical model was fitted to experimental results with thermodynamic considerations. The geochemical model allowed for the identification of the mineral phases involved in providing the buffering capacity of carbonated mining waste (Mibladen) and the meager buffering capacity of the silicate mining waste (Zeida). These cases are representative of contaminated neutral drainage (CND) and acid mine drainage (AMD), respectively. The results highlight the consistency between the ANC–BNC experimental data and the associated modeling in terms of geochemical behavior, validating the approach and identifying the main mechanisms involved. The modeling approach identifies the dissolution of the main solid phases, which impact the pH and the speciation of lead as a function of the pH. This innovative approach, combining ANC–BNC experiments and geochemical modeling, allowed for the accurate identification of mineral phases and surface complexation phenomena, which control the release of lead and its speciation in drainage solutions, as well as within solid phases, as a function of pH.

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Spatial and Temporal Stability of Major and Trace Element Leaching in Urban Stormwater Sediments

Cited by 9 publications

References 25 publications

Leaching behavior of major and trace elements from sludge deposits of a French vertical flow constructed wetland

Leaching behavior of major and trace elements from sludge deposits of a French vertical flow constructed wetland

Occurrence of drug target residues within decantation tank sediments: a good clue to assess their historical excretion?

Lead Mobilization and Speciation in Mining Waste: Experiments and Modeling

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