Calcium carbonate nanoparticles fabricated by a facile method based on the colloidal gas aphrons for removal of fluoride ions from aqueous solutions

Banihashemi, Aliakbar; Zare, K.; Javanbakht, Vahid; Mohammadifard, Hossein

doi:10.1016/j.matchemphys.2020.123934

Cited by 16 publications

(5 citation statements)

References 31 publications

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“…CaCO 3 -based nanoscale ionic materials with liquid-like properties are known to exhibit high electrical conductivity and are explored for various industrial applications (Wang et al 2018). Recently, Banihashemi et al fabricated CCNPs for the removal of fluoride from aqueous solutions (Banihashemi et al 2021). The synthesized CCNPs was enabled to remove 460 mg fluoride ions from 1 L solutions at 298 K and neutral pH.…”

Section: Environmental Applicationsmentioning

confidence: 99%

Calcium carbonate nano- and microparticles: synthesis methods and biological applications

et al. 2021

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Calcium carbonate micro-and nanoparticles are considered as chemically inert materials. Therefore, they are widely considered in the field of biosensing, drug delivery, and as filler material in plastic, paper, paint, sealant, and adhesive industries. The unusual properties of calcium carbonate-based nanomaterials, such as biocompatibility, high surface-to-volume ratio, robust nature, easy synthesis, and surface functionalization, and ability to exist in a variety of morphologies and polymorphs, make them an ideal candidate for both industrial and biomedical applications. Significant research efforts have been devoted for developing novel synthesis methods of calcium carbonate particles in micrometer and nanometer dimensions. This review highlights different approaches of the synthesis of calcium carbonate micro-and nanoparticles, such as precipitation, slow carbonation, emulsion, polymer-mediated method, including in-situ polymerization, mechano-chemical, microwave-assisted method, and biological methods. The applications of these versatile calcium carbonate micro-and nanoparticles in the biomedical field (such as in drug delivery, therapeutics, tissue engineering, antimicrobial activity, biosensing applications), in industries, and environmental sector has also been comprehensively covered.

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Section: Environmental Applicationsmentioning

confidence: 99%

Calcium carbonate nano- and microparticles: synthesis methods and biological applications

et al. 2021

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“…With the growing population and industrialization, the release of effluents from different industries because of their adverse effects poses a serious threat to living organisms 1–10 . Dye effluents are among the most important environmental pollutants.…”

Section: Introductionmentioning

confidence: 99%

A novel foam of geopolymer based on ZSM‐5 zeolite fabricated using templating emulsion/chemical foaming method and its application in batch and continuous dye removal systems

Monjezi

Javanbakht

2023

Env Prog and Sustain Energy

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Geopolymers as sustainable and environmentally friendly “green materials,” can be synthesized by utilizing waste material and by‐products. A porous geopolymer foam adsorbent based on ZSM‐5 zeolite was prepared using templating emulsion/chemical foaming method in different conditions and used for removal of low‐concentration dye in batch and continuous systems. The parameters affecting the dye adsorption including temperature, concentration, pH, kinetics, isotherm, and thermodynamics of the process were investigated. The results of the geopolymer foam synthesis showed that thermal pretreatment of the zeolite has a positive effect on the strength and adsorption capacity. Moreover, the increase in sodium silicate more than the stoichiometric reduces the strength and adsorption capacity. The findings obtained from the batch adsorption process showed that the adsorption kinetics of the pseudo‐second‐order model and the adsorption isotherm of the Temkin model is adjusted with the experimental data. Thermodynamic results indicated that the process of dye adsorption with geopolymer foam is exothermic. The results from continuous experiments indicated more compatibility of the adsorption process with the models of Thomas and Bohart–Adams. The maximum adsorption capacity of methylene blue in batch and continuous processes was 9.82 and 8.17 mg/g. The adsorbent reduction was performed successfully by chemical and thermal processes.

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“…Therefore, high-quality adsorbents with excellent properties attract more attention. Many adsorbents, such as activated carbon [ 21 ], bone char [ 22 ], zeolite [ 23 ], calcined clay [ 24 ], activated fly ash [ 25 ] and loaded biochar [ 26 ], have been used for water defluoridation. Recently, biochar (BC) has been extensively used as an adsorbent due to its low-budget, eco-friendly nature, and substantial resources [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Nanoarchitectonics and Kinetics Insights into Fluoride Removal from Drinking Water Using Magnetic Tea Biochar

Ashraf

Chen

et al. 2022

IJERPH

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Fluoride contamination in water is a key problem facing the world, leading to health problems such as dental and skeletal fluorosis. So, we used low-cost multifunctional tea biochar (TBC) and magnetic tea biochar (MTBC) prepared by facile one-step pyrolysis of waste tea leaves. The TBC and MTBC were characterized by XRD, SEM, FTIR, and VSM. Both TBC and MTBC contain high carbon contents of 63.45 and 63.75%, respectively. The surface area of MTBC (115.65 m2/g) was higher than TBC (81.64 m2/g). The modified biochar MTBC was further used to remediate the fluoride-contaminated water. The fluoride adsorption testing was conducted using the batch method at 298, 308, and 318 K. The maximum fluoride removal efficiency (E%) using MTBC was 98% when the adsorbent dosage was 0.5 g/L and the fluoride concentration was 50 mg/L. The experiment data for fluoride adsorption on MTBC best fit the pseudo 2nd order, rather than the pseudo 1st order. In addition, the intraparticle diffusion model predicts the boundary diffusion. Langmuir, Freundlich, Temkin, and Dubnin–Radushkevich isotherm models were fitted to explain the fluoride adsorption on MTBC. The Langmuir adsorption capacity of MTBC= 18.78 mg/g was recorded at 298K and decreased as the temperature increased. The MTBC biochar was reused in ten cycles, and the E% was still 85%. The obtained biochar with a large pore size and high removal efficiency may be an effective and low-cost adsorbent for treating fluoride-containing water.

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Calcium carbonate nanoparticles fabricated by a facile method based on the colloidal gas aphrons for removal of fluoride ions from aqueous solutions

Cited by 16 publications

References 31 publications

Calcium carbonate nano- and microparticles: synthesis methods and biological applications

Calcium carbonate nano- and microparticles: synthesis methods and biological applications

A novel foam of geopolymer based on ZSM‐5 zeolite fabricated using templating emulsion/chemical foaming method and its application in batch and continuous dye removal systems

Nanoarchitectonics and Kinetics Insights into Fluoride Removal from Drinking Water Using Magnetic Tea Biochar

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