Investigation of Hydroxyapatite-Entrenched Cerium Organic Frameworks Incorporating Biopolymeric Beads for Efficient Fluoride Removal

Jeyaseelan, Antonysamy; Viswanathan, Natrayasamy

doi:10.1021/acs.iecr.2c00487

Cited by 23 publications

(5 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5d reveals the impact of initial solution pH on fluoride adsorption with MGCHC hybrid beads and this outcome exhibited that the utmost fluoride adsorption was take place at pH level 6.0. The diminished in the DC with acidic pH medium may be ascribed to the probable protonation of fluoride species and dissolution of the material 52 . In addition; the reduced DC in basic medium may be because of the better rivalry between OH − ions and fluoride for the interlayer spaces in the materials.…”

Section: Resultsmentioning

confidence: 99%

Design and fast uptake of fluoride using hybrid biopolymers encapsulated magnetic hydroxyapatite beads

Jeyaseelan,

Viswanathan,

Kumar

et al. 2023

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

Hydroxyapatite is the one of the promising defluoridating material. For easy separation and to enhance defluoridation capacity (DC), magnetic iron oxide cum β‐cyclodextrin functionalized hydroxyapatite was prepared and because of its powder form it cannot be used in column studies. To make functionalized magnetic hydroxyapatite in usable bead form it was encapsulated using hybrid biopolymers chitosan and gelatin named as magnetic iron oxide/gelatin‐chitosan/hydroxyapatite/β‐cyclodextrin (MGCHC) composite beads were fabricated and utilized for rapid fluoride removal. The obtained MGCHC hybrid beads exhibited DC of 4985 mgF− kg−1 within 30 min. In co‐anions studies, Cl−, SO42− and NO3− had little influence on fluoride adsorption, whereas HCO3− had major influence on fluoride adsorption. The isotherm and kinetic data of MGCHC beads toward fluoride removal was effectively portrayed with Langmuir and pseudo‐second order model respectively. Defluoridation mechanism of MGCHC beads were mainly followed by electrostatic attraction, ion‐exchange and complexation. This investigation using MGCHC beads affords cost‐effective and eco‐friendly for fluoride removal which gives a practicable way for the fluoride treatment from field water.

show abstract

Section: Resultsmentioning

confidence: 99%

Design and fast uptake of fluoride using hybrid biopolymers encapsulated magnetic hydroxyapatite beads

Jeyaseelan,

Viswanathan,

Kumar

et al. 2023

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, the attained results were recommended that the 200 rpm speed could be more suitable for defluoridation of HT‐LaMOFs. The adsorption capacity of fluoride larger than HT because La‐metal present in the form of La 3+ ions, hence DC of HT‐LaMOFs enhanced than HT 49 . Therefore, further studies towards fluoride were carried out for HT‐LaMOFs within 30 min optimized time range.…”

Section: Resultsmentioning

confidence: 99%

Fabricated design of hydrotalcite embedded lanthanum organic frameworks for defluoridation of water

Jeyaseelan

Viswanathan

Govindasamy

et al. 2023

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

The surplus fluoride in drinking water leads to diseases namely fluorosis (dental, skeletal, and non‐skeletal). Hence, to overcome these problems, in this study, hydrotalcite (HT) integrated La‐based metal‐organic frameworks (LaMOFs) namely HT‐LaMOFs was fabricated for fluoride removal. The fabricated HT‐LaMOFs material was well characterized by various characterization methods (x‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Energy‐dispersive X‐ray spectroscopy (EDAX), thermogravimetric analysis (TGA), and differential thermal analysis (DTA)) to find the structural properties and stability of HT‐LaMOFs. To find the fluoride adsorption nature, the batch studies were employed towards fluoride adsorption such as reaction time, co‐ions, HT‐LaMOFs dosage, pH, initial fluoride concentration, selectivity, pHzpc, and temperature studies. The contact time studies results reveals that the defluoridation capacity (DC) of HT‐LaMOFs was towards fluoride was found as 4451 mgF− kg−1 at 30 min than HT (1030 mgF− kg−1 at 50 min). The DC had little influences in the presence of HCO3− ion compared to other ions. Fluoride adsorption mechanism of HT‐LaMOFs was initiated to be electrostatic interaction, ion‐exchange and complexation. Fluoride adsorption onto HT‐LaMOFs was well matched and followed with Langmuir model. Thermodynamic investigations exposed that the adsorption of fluoride onto HT‐LaMOFs followed by spontaneous and endothermic nature. Kinetic studies of HT‐LaMOFs on fluoride capture followed with pseudo‐second‐order and intraparticle diffusion models. Defluoridation by HT‐LaMOFs was followed endothermic with spontaneous nature of adsorption system. The regeneration study results of HT‐LaMOFs revealed that the developed HT‐LaMOFs was regenerable up to six cycles. In addition, field study outcomes revealed that the developed HT‐LaMOFs diminished fluoride concentration under the acceptable limit as 1.5 mg/L.

show abstract

“…Also, when using dolomite, it was found that nitrate does not alter the phosphate adsorption capacity [3]. In addition, Jeyaseelan and Viswanathan [79] reported during the competitive fluoride adsorption in the presence of chlorine, phosphate, sulfate, nitrate, and bicarbonate. The increasing removal efficiency of NO 3 − in the presence of PO 4 3− might be because phosphate in an aqueous solution produces hydroxyl ions, which raises the pH of the solution.…”

Section: Multi-component Adsorptionmentioning

confidence: 97%

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

Tovar

Villabona-Ortíz

González-Delgado

et al. 2023

Water

View full text Add to dashboard Cite

Water treatment alternatives such as adsorption using agricultural residues are currently being studied to eliminate pollutants that cause eutrophication in water bodies, avoiding the alteration of aquatic ecosystems. In this work, two bio-adsorbents were prepared using cellulose extracted from corn stems, Zea mays, which were labeled as MC (quaternized cellulose modified with Cetyl trimethyl ammonium chloride) and B 1:1 (biochar obtained by the impregnation of the biomass with an H2SO4 solution, 50% v/v, using a ratio of 1:1% weight of biomass to volume, followed by carbonization at 520 °C for 30 min with a heating rate of 10 °C/min). FTIR, TGA, DSC, and SEM-EDS were used to study the properties of the bio-adsorbents. The effect of temperature over nitrate and phosphate adsorption in the selective and binary system at 100 mg/L was tested at five temperatures: 25, 30, 35, 40, and 45 °C, using a load of the pollutant of 100 mg/L, volume of 5 mL, and a rate of bio-adsorbent of 2 g/L at 200 rpm. Results showed a phosphate removal of 29.1% using the B 1:1 bio-adsorbent at 30 °C and 23.8% with the MC bio-adsorbent at 35 °C. In the case of nitrate, removal of 40% was determined with the B 1:1 bio-adsorbent at 25 °C, while removal of 38.5% was attained at 30 °C after using the MC bio-adsorbent. The equilibrium was reached at 420 min. Nitrate adsorption with the MC sample showed a good adjustment to the pseudo-second-order model. The pseudo-first-order model described the kinetics of phosphate removal with MC, while this model had a good fit with the B 1:1 sample for nitrate and phosphate. Freundlich’s model also adjusted the adsorption equilibrium for both anions with acceptable accuracy. Moreover, the binary study indicated selectivity for the phosphate, suggesting the potential applications of the carbon-based bio-adsorbents for anionic ions remotion in aqueous media.

show abstract

Investigation of Hydroxyapatite-Entrenched Cerium Organic Frameworks Incorporating Biopolymeric Beads for Efficient Fluoride Removal

Cited by 23 publications

References 90 publications

Design and fast uptake of fluoride using hybrid biopolymers encapsulated magnetic hydroxyapatite beads

Design and fast uptake of fluoride using hybrid biopolymers encapsulated magnetic hydroxyapatite beads

Fabricated design of hydrotalcite embedded lanthanum organic frameworks for defluoridation of water

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

Contact Info

Product

Resources

About