Adsorption of Dye on a Tunisian Unsaturated Layered Soil: Physical and Numerical Modeling

Jedidi, Asma; Kraiem, Amal; Dardouri, Sana; Marcoux, Manuel; Sghaier, Jalila

doi:10.1134/s1064229320080074

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…Land application of textile organic waste and crop irrigation waters polluted by dyehouse effluents provide the driving force for the movement of synthetic dyestuffs through agricultural soil. At a low flow rate, the dye–soil contact time is high and a bonding interaction between the dye molecules and soil particles is possible, resulting in an intensification of dye retention on soil materials (Jedidi et al, 2020 ; Smaranda et al, 2017 ); adsorption on soil subsurface is one of the most important processes that allow the dye transport (Jedidi et al, 2020 ). The dye tracer Brilliant Blue FCF (C.I.…”

Section: Resultsmentioning

confidence: 99%

C.I. Acid Black 1 transfer from dilute solution to perlite framework in organic waste management

Roulia,

Vassiliadis

2024

Environ Geochem Health

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Dyes, considered as toxic and persistent pollutants, must be removed from organic wastes prior to their composting and application in sustainable agriculture. Azo dyes, capable of altering the physicochemical properties of soil, are difficult to expel by conventional wastewater treatments. C.I. Acid Black 1 (AB 1), a sulfonated azo dye, inhibits nitrification and ammonification in the soil, lessens the nitrogen use efficacy in crop production and passes substantially unaltered through an activated sludge process. The retention of C.I. Acid Black 1 by raw and expanded perlite was investigated in order to examine the potential effectiveness of this aluminosilicate material toward organic waste cleanup. Dye adsorption proved spontaneous and endothermic in nature, increasing with temperature for both perlites. Expanded perlite having a more open structure exhibited a better performance compared to the raw material. Several of the most widely recognized two-parameter theoretical models, i.e., Langmuir, Freundlich, Temkin, Brunauer–Emmett–Teller (BET), Harkins–Jura, Halsey, Henderson, and Smith, were applied to reveal physicochemical features characterizing the adsorption. The Langmuir, Freundlich, Temkin, BET, Henderson, and Smith equations best fitted experimental data indicating that the adsorption of anionic dye on perlites is controlled by their surface, i.e., non-uniformity in structure and charge. This heterogeneity of surface is considered responsible for promoting specific dye adsorption areas creating dye “islands” with local dye supersaturations.

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Section: Resultsmentioning

confidence: 99%

C.I. Acid Black 1 transfer from dilute solution to perlite framework in organic waste management

Roulia,

Vassiliadis

2024

Environ Geochem Health

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“…The transport process of pollutants in layered soil is more complex and can be influenced by soil texture [22], layer arrangement [23,24], soil thickness [25], and the number of layers [26]. Wang et al [27] found that the infiltration peak changes significantly when passing through soil stratification interfaces, and that both clay-sand and sand-clay interbed structures can impede the infiltration process of water.…”

Section: Introductionmentioning

confidence: 99%

Low-Permeability Layered Clay Soil Hinders Organic Macromolecular Pollutant Migration in the Transition Zone of the Jianghan Plain–Dabie Mountain Area

Shi,

Liu,

Yang

et al. 2024

Water

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With the development of industry and agriculture, the level of organic pollutants in groundwater exceeds the standard in some parts of the transition zone of the Jianghan Plain–Dabie Mountain area. To investigate the ability of low-permeability layered clay soil in the study area to hinder the migration of organic macromolecular pollutants, the traditional tracer fluorescein sodium was used to represent organic macromolecular pollutants. The adsorption and migration behavior of organic macromolecular pollutants in the layered soil were explored through indoor experiments. Additionally, a one-dimensional soil column solute transport model was established for the study area using HYDRUS-1D to obtain the dispersivities and dispersion coefficients of organic macromolecular pollutants in layered clay soil. The results showed that the breakthrough duration of sodium fluorescein was up to 116 days in silty clay soil, while the breakthrough duration in sandy sub-sandy soil was only 2.6 days. The dispersion coefficient of organic macromolecular pollutants was only 0.0038 cm2/d in silty clay soil, while the dispersion coefficient was up to 4.724 cm2/d in sandy sub-sandy soil. The dispersion coefficient decreased with the increasing clay fraction of the soil. Compared with homogeneous soil, the dispersivity of organic macromolecular pollutants in clayed soil decreased, and the dispersion coefficient also changed. It indicates that the layered clay soil in the study area effectively hinders the downward migration of organic macromolecular pollutants due to its low permeability and pollutant adsorption capacity. Simultaneously, the lateral transport of water at different soil interfaces in layered soil prolongs the time for organic macromolecular pollutants to reach the underlying aquifer. Low-permeability clay soil may act as a short-term barrier to the migration of organic pollutants to deeper soil and groundwater in the study area. This study provides data support and a theoretical basis for future pollution prevention and control in the Jianghan Plain–Dabie Mountain area.

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“…As a good adsorbent, clay minerals are widely used to remove heavy metals, antibiotics, dyes, etc. from the aqueous environment [ 17 , 18 , 19 ]. The adsorption properties of soil benefit from the large surface area, which improves adsorption by promoting ion exchange [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Properties and Mechanism of Attapulgite to Graphene Oxide in Aqueous Solution

Fang

Jiang

et al. 2022

IJERPH

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In order to remove toxic graphene oxide (GO) from aqueous solution, attapulgite (ATP) was used as adsorbent to recycle it by adsorption. In this paper, the effects of different pH, adsorbent mass, GO concentration, time and temperature on the adsorption of GO by attapulgite were studied, and the adsorption performance and mechanism were further explored by XRD, AFM, XPS, FTIR, TEM and SEM tests. The results show that when T = 303 K, pH = 3, and the GO concentration is 100 mg/L in 50 mL of aqueous solution, the removal rate of GO by 40 mg of attapulgite reaches 92.83%, and the partition coefficient Kd reaches 16.31. The adsorption kinetics results showed that the adsorption equilibrium was reached at 2160 min, and the adsorption process could be described by the pseudo-second-order adsorption equation, indicating that the adsorption process was accompanied by chemical adsorption and physical adsorption. The isotherm and thermodynamic parameters show that the adsorption of GO by attapulgite is more consistent with the Langmuir isotherm model, and the reaction is a spontaneous endothermic process. The analysis shows that attapulgite is a good material for removing GO, which can provide a reference for the removal of GO in an aqueous environment.

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Adsorption of Dye on a Tunisian Unsaturated Layered Soil: Physical and Numerical Modeling

Cited by 5 publications

References 33 publications

C.I. Acid Black 1 transfer from dilute solution to perlite framework in organic waste management

C.I. Acid Black 1 transfer from dilute solution to perlite framework in organic waste management

Low-Permeability Layered Clay Soil Hinders Organic Macromolecular Pollutant Migration in the Transition Zone of the Jianghan Plain–Dabie Mountain Area

Adsorption Properties and Mechanism of Attapulgite to Graphene Oxide in Aqueous Solution

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