Zr(IV) functionalized graphene oxide anchored sand as potential and economic adsorbent for fluoride removal from water

Prathibha, C.; Biswas, Anjana; Chunduri, L. A. Avinash; Reddy, Shiva Konda; Loganathan, P.; Kalaruban, Mahatheva; Kamisetti, Venkatarmaniah

doi:10.1016/j.diamond.2020.108081

Cited by 28 publications

(13 citation statements)

References 55 publications

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“…However, the nanosheets of these materials can aggregate heavily in water due to π–π interactions and strong Van der Waals interactions between the graphene layers, which inhibit the materials’ high adsorption capacity. One promising strategy to overcome this problem is to incorporate graphene and graphene oxide nanosheets onto low-cost substrates [ 58 ]. They have been used in laboratory adsorption studies of PPCPs.…”

Section: Ppcp Removal Methodsmentioning

confidence: 99%

“…While these forms of carbon adsorption (CNT, AC, graphene, graphene oxide) processes are promising, their application in large-scale scenarios is hampered by the following: The costs of graphene and graphene oxide are still prohibitive, and further research is required to lower them [ 58 ]; The aggregation of graphene sheets should be prevented to avoid a reduction in adsorption capacity by loading it onto low-cost materials [ 58 ]; Similarly, more research is required to simplify and lower the cost of CNT production; …”

Section: Ppcp Removal Methodsmentioning

confidence: 99%

“…The costs of graphene and graphene oxide are still prohibitive, and further research is required to lower them [ 58 ];…”

Section: Ppcp Removal Methodsmentioning

confidence: 99%

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Treatment Trends and Combined Methods in Removing Pharmaceuticals and Personal Care Products from Wastewater—A Review

et al. 2023

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When discharged into wastewater, pharmaceuticals and personal care products (PPCPs) become microorganic contaminants and are among the largest groups of emerging pollutants. Human, animal, and aquatic organisms’ exposures to PPCPs have linked them to an array of carcinogenic, mutagenic, and reproductive toxicity risks. For this reason, various methods are being implemented to remove them from water bodies. This report critically reviews these methods and suggests improvements to removal strategies. Biological, physical, and chemical methods such as biological degradation, adsorption, membrane filtration, and advanced electrical and chemical oxidation are the common methods used. However, these processes were not integrated into most studies to take advantage of the different mechanisms specific to each process and are synergistic in the removal of the PPCPs that differ in their physical and chemical characteristics (charge, molecular weight, hydrophobicity, hydrogen bonding, structure). In the review articles published to date, very little information is available on the use of such integrated methods for removing PPCPs. This report attempts to fill this gap with our knowledge.

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Section: Ppcp Removal Methodsmentioning

confidence: 99%

Section: Ppcp Removal Methodsmentioning

confidence: 99%

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Treatment Trends and Combined Methods in Removing Pharmaceuticals and Personal Care Products from Wastewater—A Review

et al. 2023

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“…Several zirconium-based materials have been reported, for example hybrid zirconium (IV)-hexamethylenediamine and amorphous zirconium phosphate [ 23 ], zirconium (IV)-doped polypyrrole/zirconium (IV) iodate [ 24 ], β-cyclodextrin modified hydrous zirconium oxide [ 25 ], iron (III)-zirconium(IV) hybrid oxide [ 26 ], zirconium-coated pumice [ 27 ], Zr/Fe/Al-modified chitosan beads [ 28 ], zirconium modified activated carbon fibers [ 29 ], complexes of zirconium and graphene oxide-zirconium with dicarboxylic acids [ 30 , 31 ], among others. Recently, low-cost carbon-based adsorbents were synthesized [ 32 ]. The Zr (IV)-impregnated graphene oxide-coated sand showed a considerable fluoride adsorption capacity compared with other carbon-based economic adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Amino Acid Complexes of Zirconium in a Carbon Composite for the Efficient Removal of Fluoride Ions from Water

González-Aguiñaga

Pérez-Tavares

Patakfalvi

et al. 2022

IJERPH

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Amino acid complexes of zirconia represent an entirely new class of materials that were synthesized and studied for the first time for the decontamination of fluoride ion containing aqueous solutions. Glutamic and aspartic acid complexes of zirconia assembled with thin carbon (stacked graphene oxide) platelets deriving from graphite oxide (GO) were synthesized by a two-step method to prepare adsorbents. The characterization of the complexes was carried out using infrared spectroscopy to determine the functional groups and the types of interaction between the composites and fluoride ions. To reveal the mechanisms and extent of adsorption, two types of batch adsorption measurements were performed: (i) varying equilibrium fluoride ion concentrations to construct adsorption isotherms at pH = 7 in the absence of added electrolytes and (ii) using fixed initial fluoride ion concentrations (10 mg/L) with a variation of either the pH or the concentration of a series of salts that potentially interfere with adsorption. The experimental adsorption isotherms were fitted by three different theoretical isotherm equations, and they are described most appropriately by the two-site Langmuir model for both adsorbents. The adsorption capacities of Zr-glutamic acid-graphite oxide and Zr-aspartic acid-graphite oxide are 105.3 and 101.0 mg/g, respectively. We found that two distinct binding modes are combined in the Zr-amino acid complexes: at low solution concentrations, F− ions are preferentially adsorbed by coordinating to the surface Zr species up to a capacity of ca. 10 mg/g. At higher concentrations, however, large amounts of fluoride ions may undergo anion exchange processes and physisorption may occur on the positively charged ammonium moieties of the interfacially bound amino acid molecules. The high adsorption capacity and affinity of the studied dicarboxylate-type amino acids demonstrate that amino acid complexes of zirconia are highly variable materials for the safe and efficient capture of strong Lewis base-type ions such as fluoride.

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“…GO has greater hypothetical surface area and abundance of oxygen containing functional groups such as hydroxyl, carboxyl groups at the sheet edges, carbonyl, and epoxy groups on the basal plane which functional groups are vital uniqueness of GO to be utilized as an efficient adsorption material for the contaminant removal from aqueous solution 16 . Recently, Prathibha et al, have developed Zr (IV) functionalized graphene oxide anchored sand as potential and economic adsorbent for fluoride removal from water 17 . Kanrar et al, have developed iron‐aluminum oxide‐graphene oxide composite material for fluoride removal 18 .…”

Section: Introductionmentioning

confidence: 99%

Facile hydrothermal fabrication of functionalized multi‐layer graphene oxide encapsulated chitosan beads for enriched fluoride adsorption

Jeyaseelan¹,

Mezni

Viswanathan³

2021

J of Applied Polymer Sci

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The present exploration was focused on the fabrication of environmental friendly adsorbent materials using graphene oxide (GO) and chitosan (CS). To modify GO by functionalization with sulphonic acid gives sulfonated GO (SGO), which possess high defluoridation capacity (DC) than GO. To boost the DC, easily separation and make it in an exploitable form of SGO material, SGO was incorporated onto biopolymer CS gives SGO/CS hybrid composite beads and employed for efficient defluoridation of water. The various influencing parameters of adsorption system viz., shaking time, adsorbate pH, initial fluoride concentration, adsorbent dosage, temperature, and interfering anions were optimized to obtain the highest DC. The DC of SGO/CS composite beads were found to be 4950 mg.kg−1 within 30 min for 10 mg/L of preliminary adsorbate solution by 0.1 g dosage. The surface and structural characterization/properties of the prepared SGO/CS composite beads were evaluated by FTIR, TGA, SEM, and XPS investigations. The attained equilibrium data were predicted by isotherms like Fruendlich, Dubinin‐Radushkevich (D‐R), and Langmuir. The acquired equilibrium data of thermodynamic investigations facilitate to predict the nature of fluoride adsorption process onto SGO/CS composite beads. The plausible defluoridation mechanism of SGO/CS composite beads was discussed in detail. The applicability of SGO/CS beads was investigated at field environment with field water sample.

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Zr(IV) functionalized graphene oxide anchored sand as potential and economic adsorbent for fluoride removal from water

Cited by 28 publications

References 55 publications

Treatment Trends and Combined Methods in Removing Pharmaceuticals and Personal Care Products from Wastewater—A Review

Treatment Trends and Combined Methods in Removing Pharmaceuticals and Personal Care Products from Wastewater—A Review

Amino Acid Complexes of Zirconium in a Carbon Composite for the Efficient Removal of Fluoride Ions from Water

Facile hydrothermal fabrication of functionalized multi‐layer graphene oxide encapsulated chitosan beads for enriched fluoride adsorption

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