Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption

Amar, Abdelouahed; Loulidi, Ilyasse; Kali, Abderrahim; Boukhlifi, Fatima; Hadey, Chaimaa; Jabri, Maria

doi:10.1155/2021/8826063

Cited by 13 publications

(5 citation statements)

References 28 publications

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“…Because of this, negatively charged nanoparticles such as GO can benefit from the favorable adsorption surfaces offered by montmorillonite colloids, allowing for more control over GO’s environmental fate. Chrysikopoulos et al [ 24 ] indicated that GO nanoparticle retention enhanced when decreasing the pH of the solution by boosting hetero-aggregation between GO nanoparticles, which was in line with other findings [ 25 ]. Furthermore, ref.…”

Section: Introductionsupporting

confidence: 84%

Exploring the Influence of Chemical Conditions on Nanoparticle Graphene Oxide Adsorption onto Clay Minerals

Ibrahim,

Awad,

Dahdouh

et al. 2023

Molecules

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High concentrations of graphene oxide (GO), a nanoparticle substance with rapid manufacturing development, have the ability to penetrate the soil surface down to the mineral-rich subsurface layers. The destiny and distribution of such an unusual sort of nanomaterial in the environment must therefore be fully understood. However, the way the chemistry of solutions impacts GO nanoparticle adsorption on clay minerals is still unclear. Here, the adsorption of GO on clay minerals (e.g., bentonite and kaolinite) was tested under various chemical conditions (e.g., GO concentration, soil pH, and cation valence). Non-linear Langmuir and Freundlich models have been applied to describe the adsorption isotherm by comparing the amount of adsorbed GO nanoparticle to the concentration at the equilibrium of the solution. Our results showed fondness for GO in bentonite and kaolinite under similar conditions, but the GO nanoparticle adsorption with bentonite was superior to kaolinite, mainly due to its higher surface area and surface charge. We also found that increasing the ionic strength and decreasing the pH increased the adsorption of GO nanoparticles to bentonite and kaolinite, mainly due to the interaction between these clay minerals and GO nanoparticles’ surface oxygen functional groups. Experimental data fit well to the non-linear pseudo-second-order kinetic model of Freundlich. The model of the Freundlich isotherm was more fitting at a lower pH and higher ionic strength in the bentonite soil while the lowest R2 value of the Freundlich model was recorded at a higher pH and lower ionic strength in the kaolinite soil. These results improve our understanding of GO behavior in soils by revealing environmental factors influencing GO nanoparticle movement and transmission towards groundwater.

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Section: Introductionsupporting

confidence: 84%

Exploring the Influence of Chemical Conditions on Nanoparticle Graphene Oxide Adsorption onto Clay Minerals

Ibrahim,

Awad,

Dahdouh

et al. 2023

Molecules

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“…The band at 540 and 827 cm −1 in the NC is due to the Zn-O bond. This band is also due to the Al-O and Si-O bond in the NC, indicating the presence of aluminates and silicates coming from clay [65,66]. The bands at 1627 and 1875 cm −1 in ZnONPs and the NC are assigned to the OH group available in the materials.…”

Section: Ftir Analysis Of Znonps and Zno/clay Ncmentioning

confidence: 93%

Photocatalytic Degradation of Methylene Blue from Aqueous Solutions by Using Nano-ZnO/Kaolin-Clay-Based Nanocomposite

Modi,

Yadav,

Ali

et al. 2023

Water

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Dyes are toxic organic compounds released as effluent from various industries that need proper treatment as they pose serious hazards to the environment and living beings, including humans. Nanocomposites can be employed as photocatalysts for the elimination of such organic compounds from wastewater. One such attempt is made in this present research study, where a zinc-based nanocomposite has been fabricated for the elimination of the methylene blue dye (MB). For the development of nanocomposite, zinc oxide nanoparticles (ZnONPs) were prepared to utilize Allium sativa peel (garlic skin) extract, which was further processed to develop ZnO/kaolin clay NC. ZnONPs and ZnO/kaolin clay NC formation have been confirmed by UV–Vis spectral bands at 379 nm and 423 nm. The NC was rod-shaped, with width of 60–100 nm and length of 200–800 nm and an average size of 50.0 ± 0.58 nm. Both materials were compared for their efficacy in photocatalytic degradation of the MB under solar light irradiation. ZnONPs removed 65% of MB, whereas the degradation efficiency of ZnO/clay NC was calculated to be 96% for 10 ppm MB. A kinetics study for photocatalytic degradation of MB using both nanomaterials showed that the photocatalytic degradation followed the pseudo-first-order (PFO) type of reaction. This investigation represents an expeditious, lucrative, ecological, and appropriate technique for the fabrication of functional nanomaterials for the remediation of diverse organic pollutants.

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“…The empirical equation established by Freundlich is as follows (Eq. ( 9)): q e ¼ K F :C 1=n e (9) where K, F , and n are the Freundlich constants, related, respectively, to the adsorption capacity and its intensity. Applying this equation in its logarithmic form to the experimental data leads to the values of these constants from the y-intercept and the slope of the following line (Eq.…”

Section: Freundlich Modelmentioning

confidence: 99%

“…Among the few fields of application, bentonite can be used for the purification of gases [1], the elimination of radioactive elements [2,3], the elimination of pesticides [4], and the elimination of phenol. This pollutant was removed by variety of clays and modified clay as the bentonite [5], the clinoptilolite [6], the composite of silica [7], the silica/hydrotalcite [8], the natural clay [9], the Montmorillonite, Clinoptilolite and Hydrotalcite [10], the hectorite [11], the untreated coffee wastes [12], the lignite [13], the zeolite X/activated carbon [14], the shells of eggs [15,16] and the chitin/chitosan [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Exploitation of Bentonite for Wastewater Treatment

Kali¹,

Loulidi²,

Amar³

et al. 2021

Montmorillonite Clay

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Bentonite is a clay with interesting surface properties (affinity for water, adsorption capacity for electro-positive compounds….). The characteristics and clarifying properties of bentonite from various companies are the subject of numerous studies. The present work focuses on the study of the efficiency of bentonite and modified bentonite to purify aqueous solutions containing organic pollutants such as phenol. First, before starting the adsorption study, a physical–chemical characterization of the clay by FTIR, BET and XRD techniques was undertaken. The specific surface of the bentonite is calculated by BET. Then, the study of isotherms and kinetics of phenol adsorption on commercial BTC showed that this pollutant can be removed from liquid effluents with a significant percentage. Langmuir and Freundlich models were applied. Finally, the kinetic study performed by UV–Visible was reproduced by FTIR spectroscopy.

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Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption

Cited by 13 publications

References 28 publications

Exploring the Influence of Chemical Conditions on Nanoparticle Graphene Oxide Adsorption onto Clay Minerals

Exploring the Influence of Chemical Conditions on Nanoparticle Graphene Oxide Adsorption onto Clay Minerals

Photocatalytic Degradation of Methylene Blue from Aqueous Solutions by Using Nano-ZnO/Kaolin-Clay-Based Nanocomposite

Exploitation of Bentonite for Wastewater Treatment

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