Efficacy of nanoclays as the potential adsorbent for dyes and metal removal from the wastewater: A review

Gahlot, Rohit; Taki, Kaling; Kumar, Manish

doi:10.1016/j.enmm.2020.100339

Cited by 18 publications

(7 citation statements)

References 70 publications

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“…It is well known that clays are utilized as adsorbents for the removal of heavy metals and dyes from the wastewater [ 11 , 12 , 13 , 14 , 15 , 16 ]. Notably, clays exhibited complex adsorption mechanisms—physical by electrostatic interaction and chemical by coordination chelation and/or ion exchange [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…Among them, clay minerals have shown promising results in water remediation because of their specific layered structure, in addition to their abundance in nature and low cost [ 11 , 12 , 13 , 14 ]. Moreover, a net negative charge on the structure of these layered silicate minerals is neutralized by the adsorption of positively charged heavy metal ions or dyes, thus determining their high adsorption capabilities [ 15 , 16 ]. Despite all of the aforementioned beneficial characteristics of clays, their separation after the adsorption process continues to be a major drawback.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Electrospun Cellulose Acetate/Nanoclay Composites for Pollutant Removal

Tsekova

Stoilova

2022

Polymers

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The creation of eco-friendly clay-based composites for pollutant removal by adsorption still remains a challenge. This problem might be successfully solved by the development of electrospun polymer–clay composites. For the first time in this study, a one-step fabrication of cellulose acetate (CA) fibers filled with commercially available nanoclays (NCs) was described. The optimal ratio at which CA/NCs dispersions remained stable was accomplished by varying the nanoclay concentration with respect to CA. Furthermore, the selected solvent system and the electrospinning conditions allowed for the successful fabrication of electrospun CA/NC composites. It was found that the composites’ surface morphology was not affected by the incorporated nanoclays and was the same as that of the electrospun CA fibers. The performed analyses clearly showed that CA and nanoclays did not react during the electrospinning process. It was found that the distribution of nanoclay layers probably was a mixture of intercalated and exfoliated structures. Notably, the type of the nanoclay strongly influenced the adsorption ability of CA/NC composites toward Cr(VI) ions and MB dye. These results suggested that the fabricated CA/NC composites are suitable for pollutant removal due to their specific structure.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of Electrospun Cellulose Acetate/Nanoclay Composites for Pollutant Removal

Tsekova

Stoilova

2022

Polymers

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“…Pollutant removal from adsorption is most promising techniques used in the most of developed countries. Adsorption potential of nano-clay composite polymers have proven most efficient for a wide range of pollutants [6,[48][49]. Figure 2 shows the effective removal of pollutants released from the major industries through nanoclay polymer composites (Figure 2).…”

Section: Wastewater Treatment and Clay Polymersmentioning

confidence: 99%

Nano Clay-Polymer Composite for Water Treatment

Naz

2022

Materials Research Foundations

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The usage of clay polymer composites has increased in the past few decades. Due to extensive availability, wide surface areas, and good adsorption efficiency clay polymers are gaining popularity amongst researchers to remove wide range of organic as well as inorganic pollutants from effluents. This book chapter sheds light on the characteristics, occurrence, types and synthesis of clay minerals used for preparing nano-clay polymer composites. It also highlights the types, applicability and efficiencies of particular nano clay polymers for the removal of dyes, paints, nutrients, potentially toxic elements and pharmaceutical contaminants from wastewater.

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“…Their direct release into the environment can lead to the accumulation of toxic substances resulting from the chemical or biochemical transformation of the dyes and the deterioration of the aquatic environment . Often, chemicals in industrial wastewater are difficult to biodegrade, and the inadequacy of treatments leads to their accumulation in the water cycle. − Dye-laden industrial wastewater has been extensively studied by developing effective dye removal techniques to treat the dye effluents before discharging them into water bodies. − Conventional physicochemical and biological methods of effluent treatment are expensive and sometimes unsuitable for large rivers due to their less cost-effective and difficult operational conditions. For the removal of organic dyes from aqueous media, many methods have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Anionic Dye Removal with a Thin Cationic Polyaniline Coating on Cellulosic Biomaterial

Ferchichi,

Chouchaine,

Amdouni

et al. 2024

ACS Omega

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This paper reports the development of novel adsorbent materials using polyaniline (PANI) grafted onto Posidonia (POS) fibers, aimed at efficiently removing phenol red (PSP), an anionic dye, from aqueous solutions. The synthesis involved the copolymerization of aniline grafted on the surface of the POS and aniline monomer in solution, resulting in a chemically bound thin PANI layer on the POS bioadsorbent. Structural characteristics and binding affinities of these adsorbents with PANI under its emeraldine salt

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Efficacy of nanoclays as the potential adsorbent for dyes and metal removal from the wastewater: A review

Cited by 18 publications

References 70 publications

Fabrication of Electrospun Cellulose Acetate/Nanoclay Composites for Pollutant Removal

Fabrication of Electrospun Cellulose Acetate/Nanoclay Composites for Pollutant Removal

Nano Clay-Polymer Composite for Water Treatment

Anionic Dye Removal with a Thin Cationic Polyaniline Coating on Cellulosic Biomaterial

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