Clay‐Based Adsorbents for the Analysis of Dye Pollutants

Shahadat, Mohammad; Momina,; Yasmin, Yasmin; Kumar, Sudhir; Ismail, Suzylawati; Ali, S. Wazed; Ahammad, Shaikh Ziauddin

doi:10.1002/9781119725237.ch6

Cited by 7 publications

(5 citation statements)

References 119 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, clay has been widely applied as an adsorbent for water treatment and as a catalyst or support catalyst in several organic syntheses (Nagendrappa, 2011;Shahadat et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Performance of Termite Mound Clay for Removal of Eosin Yellow Dye from Aqueous Solution

2024

AJBAR

View full text Add to dashboard Cite

This study investigates the adsorption capacity of termite mound clay (TMC) for the removal of eosin yellow (EY) dye from aqueous systems. Scanned Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) were used along with some physicochemical properties to characterize the termite mound clay. The adsorption experiment was studied by batch adsorption method with the influence of parameters which include initial dye concentration, contact time, dosage, pH and temperature. The surface of TMC showed functional groups similar to kaolin with flake-like and rough morphology. Efficiency of 99.12% (12.39 mg/g) was achieved at a pH of 3, indicating a pH-dependent adsorption process. The fitness of the equilibrium data into Langmuir isotherm (R 2 =0.9446) with maximum monolayer adsorption capacity of 23.47 mg/g revealed a monolayer coverage of EY on the surface of TMC. The uptake of the dye molecules was rapid within 10 min and the kinetic study was best described by pseudosecond-order model with a rate constant (k 2 ) of 0.271 g/(mg.min). Thermodynamically, the process required little or no heat as a rise in the temperature resulted to decrease in the adsorption capacity and efficiency of TMC on the removal of EY dye. TMC showed potential as a cost-effective adsorbent for the treatment of dye-contaminated water.

show abstract

“…Consequently, clay has been widely applied as an adsorbent for water treatment and as a catalyst or support catalyst in several organic syntheses (Nagendrappa, 2011;Shahadat et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Performance of Termite Mound Clay for Removal of Eosin Yellow Dye from Aqueous Solution

2024

AJBAR

View full text Add to dashboard Cite

show abstract

“…These clays are classified as 2:1 layered silicate, featuring an octahedral alumina sheet sandwiched by two silicon tetrahedral layers, with a relatively high cation exchange capacity and lamellar expansion, facilitating the interaction with ions and organic molecules incorporation. [10] In this context, zein composites and nanocomposites have received special consideration in recent years due to their large availability and the great potential to obtain material with singular applications, such as improved mechanical, thermal, barrier, antibacterial activities and surface features, especially for edible food film applications. [11][12][13] Zein is an endosperm-derived protein of corn grains, characterized by its high non-polar amino acid content, providing hydrophobic molecular structure.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zein/hydroxypropylcellulose biofilms with hydrophilic and hydrophobic montmorillonite clays

et al. 2023

View full text Add to dashboard Cite

This study analyzed the changes in the structural, morphological and mechanical properties of Biofilm A (46.1% zein/30.8% hydroxypropylcellulose/23.1% propylene glycol) and Biofilm B (53.8% zein/23.1% hydroxypropylcellulose/23.1% propylene glycol) when 0.5%, 1% or 2% Cloisite Na+ (NaMt) and 1% Cloisite 30B (C30B) were added to the systems. Infrared spectroscopy showed clay particles interact with the polymeric matrix mainly via hydrogen bonds between silanol and amide/hydroxyl groups from minerals and polymers, respectively. X‐ray diffraction and small angle X‐ray scattering patterns indicated clays were exfoliated in both formulations with 0.5% NaMT and 1% C30B, or presented larger lamellar spacing on biofilms containing 1% or 2% of hydrophilic clay compared to pure clays. Scanning electron micrographs showed clay were incorporated into the polymers at low clay content and presented some aggregates at 2% NaMt. Mechanical tests showed that Biofilms B had better mechanical properties compared to Biofilms A, and Biofilms B with 1% NaMt presented the highest value of tensile strength. Moreover, the addition of organophilic clay in both formulations produced nanocomposites with good mechanical properties. These results showed clays are strategic to obtain nanocomposite films with interesting physical and chemical properties.

show abstract

“…The main applications of clay minerals in wastewater treatment are as adsorbents or catalysts. Adsorption allows the removal of pollutant by mass transfer to a solid surface (adsorbent) and is one of the main processes used in the treatment of wastewaters containing dyes [2,3,6,7]. Adsorption has advantages by comparison with other processes as it has a high efficiency for all dyes, the adsorbent can be regenerated, and more than that, clays are cost effective (lowest price per kilogram for effluent treatment) [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption has advantages by comparison with other processes as it has a high efficiency for all dyes, the adsorbent can be regenerated, and more than that, clays are cost effective (lowest price per kilogram for effluent treatment) [2,3]. Various types of raw clays (e.g., kaolinite, bentonite, sepiolite) or acid-, base-, surfactant-, polymer-modified clays proved to be extremely efficient in the removal of dyes from wastewater [2,3,6,7]. Advances Oxidation Processes (AOPs) such as catalytic wet air oxidation (CWAO) and catalytic wet peroxide oxidation (CWPO) are heterogeneous processes that require the presence of a catalysts and a strong oxidant (oxygen, ozone, hydrogen peroxide) [4,8].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Evaluation of Natural Bearing and Iron-Enriched Montmorillonitic Clay as Catalysts for Wet Oxidation of Dye-Containing Wastewaters

et al. 2022

View full text Add to dashboard Cite

Natural bearing (raw and calcined at 500 °C) and iron-enriched (impregnation and pillaring) montmorillonitic clay samples were prepared. The obtained samples were characterized (X-ray diffraction, Fourier Transformed Infrared Spectroscopy, Scanning Electron Microscopy, and Energy Dispersive X-ray Spectroscopy) and evaluated as catalysts in catalytic wet oxidation of Brilliant Green and Crystal Violet. Experiments were conducted in the same conditions (0.5 g catalysts, 300 mL air/min or 0.5 mL H2O2, 25 mL of dye solution, 25 °C, initial solution pH = 6.0, for 3 h) in thermostated batch reaction tubes. Process evolution was followed using UV-Vis spectrometry (200–1100 cm−1) and total organic carbon. Dye removal efficiencies (decolorization) between 98 and 99% were determined, while total organic carbon removal efficiencies were calculated to be in the 53–98% range. Iron leakage investigation showed that iron is lost in higher amounts for the catalysts prepared using the impregnation method by comparison with the pillared sample.

show abstract

Clay‐Based Adsorbents for the Analysis of Dye Pollutants

Cited by 7 publications

References 119 publications

Adsorptive Performance of Termite Mound Clay for Removal of Eosin Yellow Dye from Aqueous Solution

Adsorptive Performance of Termite Mound Clay for Removal of Eosin Yellow Dye from Aqueous Solution

Zein/hydroxypropylcellulose biofilms with hydrophilic and hydrophobic montmorillonite clays

Characterization and Evaluation of Natural Bearing and Iron-Enriched Montmorillonitic Clay as Catalysts for Wet Oxidation of Dye-Containing Wastewaters

Contact Info

Product

Resources

About