Fluoride removal from water by ceramic oxides from cerium and manganese solutions

Vences-Álvarez, Esmeralda; Flores-Arciniega, Jose Luis; Flores‐Zúñiga, H.; Rangel-Méndez, J. Rene

doi:10.1016/j.molliq.2019.110880

Cited by 19 publications

(4 citation statements)

References 33 publications

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“…Different adsorbents exhibit different defluoridation performances, which depend on the physicochemical properties of adsorbents. During the past decades, a variety of adsorbents have been developed and used for fluoride removal, such as natural-mineral-based adsorbents, , biomass adsorbents, carbon-based adsorbents, − metal oxides, or hydroxides. − For example, stilbite zeolite with low cost was used as the raw material to prepare a nano-hydroxyapatite/stilbite adsorbent, which had an adsorption capacity of 4.02 mg/g . Affonso et al synthesized an adsorbent by stabilizing carbon nanotubes in chitosan sponge and evaluated its feasibility for fluoride removal from fertilizer industry wastewater .…”

Section: Introductionmentioning

confidence: 99%

Separation of Excess Fluoride from Water Using Amorphous and Crystalline AlOOH Adsorbents

et al. 2021

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Aluminum hydroxide is an effective defluoridation adsorbent; however, the poor defluoridation performance limits its wide application. In this work, amorphous and crystalline AlOOH adsorbents are synthesized through hydrolysis of Al salts, and their defluoridation performances are evaluated in terms of adsorption capacity and rate, sensitivity to pH value, and water quality after defluoridation. The defluoridation performance of AlOOH is closely related to the hydrolysis pH value, but hardly to the type of Al salts. The adsorbent can remove >95% fluoride in the first 2 min and reach adsorption equilibrium within 2 h, and the maximum defluoridation capacity is 41.9 mg/g. Furthermore, the adsorbent exhibits an excellent defluoridation efficiency at a wide pH range of 4.5–10.5. After fluoride removal, the adsorbents prepared at pH values of 6 and 7 exhibit low residual Al concentration. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results confirm that the fluoride removal mechanism is the ligand exchange between fluoride and hydroxyl groups. The excellent defluoridation capacity and low residual Al demonstrate that AlOOH is a potential adsorbent for fluoride separation from water.

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Section: Introductionmentioning

confidence: 99%

Separation of Excess Fluoride from Water Using Amorphous and Crystalline AlOOH Adsorbents

et al. 2021

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“…Previous reports have explained that the multimetallic oxide-based nanomaterials generally exhibit more interactions with F – ions than single-metallic oxides . The majority charge carriers in BTMO are holes as it is a p-type material.…”

Section: Resultsmentioning

confidence: 99%

“…79,80 Previous reports have explained that the multimetallic oxidebased nanomaterials generally exhibit more interactions with F − ions than single-metallic oxides. 81 The majority charge carriers in BTMO are holes as it is a p-type material. There exist two conceivable reactions that occur between the metal cations of the nanomaterial and the fluoride water, known as, electrostatic attraction and fluoride complexing.…”

Section: CDmentioning

confidence: 99%

Self-Powered Fluoride Ion Detectors Based on Piezoelectric Nanogenerators with Filler Materials Comprising Mn-Doped BaTiO₃ Nanostructures and Carbon Nanotubes

Bhaduri

Singh

Gupta

2023

ACS Appl. Nano Mater.

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The current study depicts an exclusive technique to detect fluoride ions in water using a cost-effective self-powered sensing device using nanostructured Mn-doped BaTiO 3 as the detecting element. The device is powered by a piezoelectric nanogenerator (PENG), whose substrate was modified by addition of the Mn-doped BaTiO 3 nanomaterial and carbon nanotubes as fillers to generate high PENG output voltage sufficient for driving the fluoride detector. A highest voltage of 43.6 V and current of 1.23 μA was achieved by the modified PENG substrate. This substrate was then connected as the input to the fluoride detection film via a rectified voltage divider circuit. The device was found to detect fluorides in water mixed at different concentrations, with the highest sensor response of 32.69 and a limit of detection as low as 1.18 μM. This work enlightens a unique method to detect fluoride in a very efficient and inexpensive way.

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“…Corresponding published results show that [71] the metal oxides of cerium (Ce) and manganese (Mn) produced by a precipitation method have exceptionally high fluoride sorption abilities. The synthesis of bimetallic oxides such as Al\Ce or Ce\Zn has exhibited an even higher effectiveness, mainly attributed to the elevated density of hydroxyl groups.…”

Section: Ce\zn Ceramic Oxidesmentioning

confidence: 99%

Recently Developed Adsorbing Materials for Fluoride Removal from Water and Fluoride Analytical Determination Techniques: A Review

et al. 2021

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In recent years, there has been an increase in public perception of the detrimental side-effects of fluoride to human health due to its effects on teeth and bones. Today, there is a plethora of techniques available for the removal of fluoride from drinking water. Among them, adsorption is a very prospective method because of its handy operation, cost efficiency, and high selectivity. Along with efforts to assist fluoride removal from drinking waters, extensive attention has been also paid to the accurate measurement of fluoride in water. Currently, the analytical methods that are used for fluoride determination can be classified into chromatographic methods (e.g., ionic chromatography), electrochemical methods (e.g., voltammetry, potentiometry, and polarography), spectroscopic methods (e.g., molecular absorption spectrometry), microfluidic analysis (e.g., flow injection analysis and sequential injection analysis), titration, and sensors. In this review article, we discuss the available techniques and the ongoing effort for achieving enhanced fluoride removal by applying novel adsorbents such as carbon-based materials (i.e., activated carbon, graphene oxide, and carbon nanotubes) and nanostructured materials, combining metals and their oxides or hydroxides as well as natural materials. Emphasis has been given to the use of lanthanum (La) in the modification of materials, both activated carbon and hybrid materials (i.e., La/Mg/Si-AC, La/MA, LaFeO3 NPs), and in the use of MgO nanostructures, which are found to exhibit an adsorption capacity of up to 29,131 mg g−1. The existing analytical methodologies and the current trends in analytical chemistry for fluoride determination in drinking water are also discussed.

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Fluoride removal from water by ceramic oxides from cerium and manganese solutions

Cited by 19 publications

References 33 publications

Separation of Excess Fluoride from Water Using Amorphous and Crystalline AlOOH Adsorbents

Separation of Excess Fluoride from Water Using Amorphous and Crystalline AlOOH Adsorbents

Self-Powered Fluoride Ion Detectors Based on Piezoelectric Nanogenerators with Filler Materials Comprising Mn-Doped BaTiO₃ Nanostructures and Carbon Nanotubes

Recently Developed Adsorbing Materials for Fluoride Removal from Water and Fluoride Analytical Determination Techniques: A Review

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Fluoride removal from water by ceramic oxides from cerium and manganese solutions

Cited by 19 publications

References 33 publications

Separation of Excess Fluoride from Water Using Amorphous and Crystalline AlOOH Adsorbents

Separation of Excess Fluoride from Water Using Amorphous and Crystalline AlOOH Adsorbents

Self-Powered Fluoride Ion Detectors Based on Piezoelectric Nanogenerators with Filler Materials Comprising Mn-Doped BaTiO3 Nanostructures and Carbon Nanotubes

Recently Developed Adsorbing Materials for Fluoride Removal from Water and Fluoride Analytical Determination Techniques: A Review

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Self-Powered Fluoride Ion Detectors Based on Piezoelectric Nanogenerators with Filler Materials Comprising Mn-Doped BaTiO₃ Nanostructures and Carbon Nanotubes