Adsorption and Removal of Organic Dye at Quartz Sand-Water Interface

Jada, Amane; Akbour, Rachid Aı̈t

doi:10.2516/ogst/2013169

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…The linear sorption isotherm was most suited for FB291, yielding a K d = 7.7 ± 0.2 mL•g −1 . The sorption of FB291 on sand occurs by electrostatic interaction forces between the cationic form of the organic pollutant and the negatively charged surface of quartz at experimental pH = 7.5 ± 0.5 (Jada & Ait Akbour, 2014). A reversible adsorption/desorption process with no hysteresis (i.e., no significant nonextractable residual fraction and degradation) was thus assumed.…”

Section: Conservative and Sorptive Tracer Experimentsmentioning

confidence: 99%

Pollutant Dissipation at the Sediment‐Water Interface: A Robust Discrete Continuum Numerical Model and Recirculating Laboratory Experiments

Drouin

Fahs

Droz

et al. 2021

Water Resources Research

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More than one-third of globally available freshwater resources is used for human activities, and freshwater pollutions by macro-and micro-pollutants are recurring and widespread (Sousa et al., 2018). Rivers are the most sensitive environmental compartments to pollution hazards, especially low Strahler order rivers, which may receive proportionally larger loads of pollutants relative to their water discharge (Honti et al., 2018; Munz et al., 2011). Hyporheic zone processes in rivers affect both biogeochemical activities and pollutant mixing in the sediment bed (Boano et al., 2014). Despite decades of intense research on the hyporheic zone, the dynamics of hyporheic zone processes remain partly unresolved. In particular, current approaches often fail to identify and hierarchize the predominant factors controlling interactions between pollutants and river sediment beds in the hyporheic zone. Hyporheic processes controlling pollutant transformation mainly occur at the sediment-water interface (SWI) where dissolved species (e.g., organic matter, nitrates, oxygen, etc.) from the overlying water or the groundwater mix within the riverbed sediment, resulting in various redox gradients, themselves controlling the pollutant fate in rivers (Byrne et al., 2014). Hydrological conditions in rivers, including the succession of low flow and flooding events, vertical surface-groundwater exchanges, and geomorphological variations of river reaches, affect the transport of dissolved pollutants at the SWI (Briggs et al., 2014; Dwivedi et al., 2018; Lansdown et al., 2015). In addition, the propensity of a pollutant to sorb and degrade within the sediment bed controls its accumulation in the hyporheic zone (Liao et al., 2013). Sorption typically increases the pollutant mean residence time in the sediment bed and alters its distribution across the hyporheic zone (Ren & Packman, 2004a, 2004b). Hence, the interplay between hydraulic processes and pollutant partitioning at the SWI currently limits our understanding of pollutant fate in river systems (Krause et al., 2017). In this context, the characterization of hyporheic exchanges in rivers can rely on laboratory tracer experiments (Liao et al., 2013). Tracers can be used as surrogates of pollutants that may facilitate investigations of

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Section: Conservative and Sorptive Tracer Experimentsmentioning

confidence: 99%

Pollutant Dissipation at the Sediment‐Water Interface: A Robust Discrete Continuum Numerical Model and Recirculating Laboratory Experiments

Drouin

Fahs

Droz

et al. 2021

Water Resources Research

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“…Its elementary analysis was given by Jada and Akbour (2013) like: Si = 45.03 %, O = 52.18 %, C < 0.3 %, H < 0.3 %, Ca = 100 ppm, Al = 185 ppm, Mg < 10 ppm, Na < 50 ppm, Fe = 150 ppm. Its isoelectric point (IEP) as measured by microelectrophoresis is IEP = 2.44 (Jada and Akbour, 2013). Fontainebleau sand was available in two fractions: (i) d ≤ 0.5 mm and (ii) d ≤ 5.0 mm.…”

Section: Sandmentioning

confidence: 99%

Designing metallic iron based water filters: Light from methylene blue discoloration

Btatkeu-K

Tchatchueng

Noubactep³

et al. 2016

Journal of Environmental Management

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Available water filtration systems containing metallic iron (Fe(0) filters) are pragmatically designed. There is a lack of sound design criteria to exploit the full potential of Fe(0) filters. A science-based design relies on valuable information on processes within a Fe(0) filter, including chemical reactions, hydrodynamics and their relation to the performance of the filter. The aim of this study was to establish a simple method to evaluate the initial performance of Fe(0) filters. The differential adsorptive affinity of methylene blue (MB) onto sand and iron oxide is exploited to characterize the evolution of a Fe(0)/sand system using the pure sand system as operational reference. Five systems were investigated for more than 70 days: pure sand, pure Fe(0), Fe(0)/sand, Fe(0)/pumice and Fe(0)/sand/pumice. Individual systems were characterized by the extent of changes in pH value, iron breakthrough, MB breakthrough and hydraulic conductivity. Results showed that for MB discoloration (i) pure sand was the most efficient system, (ii) hybrid systems were more sustainable than the pure Fe(0) system, and (iii) the pores of used pumice are poorly interconnected. Characterizing the initial reactivity of Fe(0) filters using MB discoloration has introduced a powerful tool for the exploration of various aspects of filter design.

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“…SiO 2 , TiO 2 , ZnO, SiO 2 -TiO 2 forming composite nanoparticles of silver-metal oxides [32, 33, 34, 35, 36]. Quartz sand, which is the main component of natural sand stone is used widely in industrial manufactories due to its physical and chemical characteristics such as low cost, resistant to high temperature and non-toxic [37, 38, 39]. There was no great attention to the use of quartz sand as a natural adsorbent to remove heavy metals from water.…”

Section: Introductionmentioning

confidence: 99%

Silver/quartz nanocomposite as an adsorbent for removal of mercury (II) ions from aqueous solutions

El-Tawil

El‐Wakeel

Abdel-Ghany

et al. 2019

Heliyon

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Silver nanoparticles (AgNPs) and silver/quartz nanocomposite (Ag/Q)NPs)) were synthesized by sol-gel method using table sugar as chelating agent. The synthesized nanosized materials were used for mercury ions adsorption from aqueous solutions. The materials were characterized by X-ray diffraction (XRD), Transmission Electron microscope (TEM), and surface area (BET). Adsorption of Hg2+ (10 mg/l) is strongly dependent on time, initial metal concentration, dose of adsorbent and pH value. Silver/quartz nanocomposite ((Ag/Q)NPs)) shows better efficiency than individual silver nanoparticles (AgNPs). This composite removed mercury ions from the aqueous solution with efficiency of 96% at 60 min with 0.5g adsorbent dosage at pH 6. The adsorption process explained well by the pseudo-second-order kinetic model. In conclusion silver/quartz nanocomposite (Ag/Q)NPs)) shows higher removal efficiency for mercury ions from aqueous solutions than individual silver naoparticles (AgNPs) or quartz (Q).

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Adsorption and Removal of Organic Dye at Quartz Sand-Water Interface

Cited by 12 publications

References 40 publications

Pollutant Dissipation at the Sediment‐Water Interface: A Robust Discrete Continuum Numerical Model and Recirculating Laboratory Experiments

Pollutant Dissipation at the Sediment‐Water Interface: A Robust Discrete Continuum Numerical Model and Recirculating Laboratory Experiments

Designing metallic iron based water filters: Light from methylene blue discoloration

Silver/quartz nanocomposite as an adsorbent for removal of mercury (II) ions from aqueous solutions

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