Removal of two cationic dyes from aqueous solutions by adsorption onto local clay: experimental and theoretical study using DFT method

Kassimi, Aziz El; Achour, Youness; Himri, Mamoune El; Laamari, Rachid; Haddad, Mohammadine El

doi:10.1080/03067319.2021.1873306

Cited by 26 publications

(8 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Clay minerals are mostly made up of 2D nanosheet units, which are made up of a set of neatly stacked layers [114]. Strong interactions such as hydrogen bonding combine neighboring 2D nanosheet units, while Van der Waals weak forces combine adjacent 2D nanosheet units.…”

Section: D Clay Nanosheetsmentioning

confidence: 99%

“…e fabrication of a range of sophisticated functional nanocomposites using 2D MMT nanosheets (MMTNS) with completely visible sites that are active following exfoliation has further pushed the use of MMT as adsorbents. According to El Kassimi et al [114], the hydrogel phase with three-dimensional macroscopic nanostructures is particularly helpful for simple solidliquid separation succeeding in removing contaminants from liquids, among the many MMTNS-based adsorbent materials. Also, the hydrogel's ion diffusion velocity is comparable to that of water, resulting in faster adsorption kinetics.…”

Section: D Clay Nanosheetsmentioning

confidence: 99%

See 1 more Smart Citation

Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals

Kinoti

Karanja

Nthiga

et al. 2022

Journal of Chemistry

View full text Add to dashboard Cite

Due to rapid industrialization, urbanization, and surge in modern human activities, water contamination is a major threat to humanity globally. Contaminants ranging from organic compounds, dyes, to inorganic heavy metals have been of major concern in recent years. This necessitates the development of affordable water remediation technologies to improve water quality. There is a growing interest in nanotechnology recently because of its application in eco-friendly, cost-effective, and durable material production. This study presents a review of recent nanocomposite technologies based on clay, applied in the removal of heavy metals from wastewater, and highlights the shortcomings of existing methods. Recently published reports, articles, and papers on clay-based nanocomposites for the removal of heavy metals have been reviewed. Currently, the most common methods utilized in the removal of heavy metals are reverse osmosis, electrodialysis, ion exchange, and activated carbon. These methods, however, suffer major shortcomings such as inefficiency when trace amounts of contaminant are involved, uneconomical costs of operation and maintenance, and production of contaminated sludge. The abundance of clay on the Earth’s surface and the ease of modification to improve adsorption capabilities have made it a viable candidate for the synthesis of nanocomposites. Organoclay nanocomposites such as polyacrylamide-bentonite, polyaniline-montmorillonite, and β-cyclodextrin-bentonite have been synthesized for the selective removal of various heavy metals such as Cu2+, Co2+, among others. Bacterial clay nanocomposites such as E. coli kaolinite nanocomposites have also been successfully synthesized and applied in the removal of heavy metals. Low-cost nanocomposites of clay using biopolymers like chitosan and cellulose are especially in demand due to the cumulative abundance of these materials in the environment. A comparative analysis of different synthetic processes to efficiently remove heavy metal contaminants with clay-based nanocomposite adsorbents is made.

show abstract

Section: D Clay Nanosheetsmentioning

confidence: 99%

Section: D Clay Nanosheetsmentioning

confidence: 99%

Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals

Kinoti

Karanja

Nthiga

et al. 2022

Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…The hydrophilic surface of clay minerals can be turned hydrophobic by replacing the naturally occurring inorganic cations with various alkyl-and/or aryl-organocations. An important consequence of this replacement is that the clay surface takes on hydrophobic character, which greatly enhances their affinity for organic pollutants (Madejová, 2003;Adikary and Wanasinghe, 2012;Tahir, Sultan and Qadir, 2013;Çakmak et al, 2017;El Kassimi et al, 2021;Namjoufar, Farzi and Karimi, 2021). (quartz).…”

Section: Adsorbent Characterizationsmentioning

confidence: 99%

Simultaneous Adsorption of Chromium and Acidic Dye from Leather Tannery Model Wastewater Using a Novel Modified Nanoclay

Sorkhabi

Aghdasinia

Oskui

et al. 2021

Preprint

View full text Add to dashboard Cite

Simultaneous removal of Cr^3+ and acidic dye from model tannery wastewater was investigated using local nano clay modified by 3-chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC) surfactant. X-ray fluorescence (XRF), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), carbon, hydrogen, nitrogen and sulfur analysis (CHNS), Brunauer-Emmet-Teller (BET) analysis and pH of zero point charge (pH_ZPC) analyses were carried out for characterization of the adsorbent, and adsorptive properties of the modified clay were investigated by batch experiments. The effects of essential parameters, such as adsorbent dosage, initial solution pH, initial solution concentration, contact time, and temperature, were studied. Maximum adsorption values (99.74% for Cr^3+ and 83.26% for dye) were obtained in the following conditions: pH of 4, initial concentration of 100 mg/L, adsorbent dosage of 15000 mg/L, contact time of 30 min. The effect of contaminants’ concentration was also investigated through response surface methodology (RSM), central composite face-centered (CCF) design and an empirical model was presented. The results of kinetic models’ studies demonstrated that simultaneous adsorption of contaminants follows the pseudo-second-order model, and the adsorption data of single and binary solutions fitted nonlinearly to isotherm models showed that the adsorption of Cr (III) from binary and single solutions follow Langmuir and Dubinin-Radushkevitch (D-R) isotherms, respectively. Adsorption of dye from both single and binary solutions follows Redlich- Peterson (R-PT) isotherm. Maximum adsorption capacities were obtained to be 193.1390 mg/g and 144.1782 mg/g for Cr^3+ and dye, respectively. Synergistic and antagonistic adsorptions were observed in binary solutions.

show abstract

Section: Adsorbent Characterizationsmentioning

confidence: 99%

“…This finding is in full consistent with FTIR results. High value of Loss on ignition or LOI (35.1%), in XRF is also related to the presence of carbonate and silicate minerals(El Kassimi et al, 2021).…”

mentioning

confidence: 99%

Simultaneous adsorption of chromium and acidic dye from leather tannery model wastewater using a novel modified nanoclay

et al. 2021

View full text Add to dashboard Cite

Simultaneous removal of !" #$ and acidic dye from model tannery wastewater was investigated using local nano clay modified by 3-chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC) surfactant. X-ray fluorescence (XRF), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), carbon, hydrogen, nitrogen and sulfur analysis (CHNS), Brunauer-Emmet-Teller (BET) analysis and pH of zero point charge (%& '() ) analyses were carried out for characterization of the adsorbent, and adsorptive properties of the modified clay were investigated by batch experiments. The effects of essential parameters, such as adsorbent dosage, initial solution pH, initial solution concentration, contact time, and temperature, were studied. Maximum adsorption values (99.74% for !" #$ and 83.26% for dye) were obtained in the following conditions: pH of 4, initial concentration of 100 +,/., adsorbent dosage of 15000 +,/., contact time of 30 min. The effect of contaminants' concentration was also investigated through response surface methodology (RSM), central composite face-centered (CCF) design and an empirical model was presented. The results of kinetic models' studies demonstrated that simultaneous adsorption of contaminants follows the pseudo-second-order model, and the adsorption data of single and binary solutions fitted nonlinearly to isotherm models showed that the adsorption of Cr (III) from binary and single solutions follow Langmuir and Dubinin-Radushkevitch (D-R) isotherms, respectively. Adsorption of dye from both single and binary solutions follows Redlich-Peterson (R-PT) isotherm. Maximum adsorption capacities were obtained to be 193.1390 12 2 and 144.1782 12 2for !" #$ and dye, respectively. Synergistic and antagonistic adsorptions were observed in binary solutions.

show abstract

Removal of two cationic dyes from aqueous solutions by adsorption onto local clay: experimental and theoretical study using DFT method

Cited by 26 publications

References 49 publications

Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals

Review of Clay-Based Nanocomposites as Adsorbents for the Removal of Heavy Metals

Simultaneous Adsorption of Chromium and Acidic Dye from Leather Tannery Model Wastewater Using a Novel Modified Nanoclay

Simultaneous adsorption of chromium and acidic dye from leather tannery model wastewater using a novel modified nanoclay

Contact Info

Product

Resources

About