Preparation of hollow Fe-Al binary metal oxyhydroxide for efficient aqueous fluoride removal

Wang, Xiao; Zhang, Gong; Lan, Huachun; Liu, Ruiping; Liu, Huijuan; Qu, Jiuhui

doi:10.1016/j.colsurfa.2017.02.017

Cited by 19 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6(a) shows the effect of coexisting anions on F − adsorption by PC-N. Due to the large amount of F − in wastewater, the above anions were selected as interfering agents for F − adsorption by PC-N in this study. 33 When NO 3 − , Cl − , SO 4 2− , HCO 3 − and PO 4 2− were present, the removal rates of F − were 89%, 86%, 74%, 66% and 63%, respectively. The effect of NO 3 − and Cl − on F − removal via PC-N were the highest, whereas the effect of PO 4 2− on F − removal via PC-N was the lowest.…”

Section: Resultsmentioning

confidence: 93%

High-efficiency N-doped activated carbon-based defluoridation adsorbent prepared from itaconic acid fermentation waste liquid

Dai

Al-shiaani

et al. 2022

New J. Chem.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 93%

High-efficiency N-doped activated carbon-based defluoridation adsorbent prepared from itaconic acid fermentation waste liquid

Dai

Al-shiaani

et al. 2022

New J. Chem.

View full text Add to dashboard Cite

show abstract

“…The strong base, NaOH, can easily interact with metal ions and form the corresponding metal hydroxides (M-OH), and hence, it was treated with MCSHT and MAlgHT composite beads for regeneration purposes. Once the PO 4 3– adsorption process was over, MCSHT and MAlgHT were immersed in 0.1 M NaOH (50 mL) for 1 h, then filtered using a centrifuge, dried, and reused for PO 4 3– adsorption again . This system was reused for six cycles, and the PO 4 3– removal efficiency is illustrated in Figure S8.…”

Section: Resultsmentioning

confidence: 99%

“…Once the PO 4 3− adsorption process was over, MCSHT and MAlgHT were immersed in 0.1 M NaOH (50 mL) for 1 h, then filtered using a centrifuge, dried, and reused for PO 4 3− adsorption again. 61 This system was reused for six cycles, and the PO 4 3− removal efficiency is illustrated in Figure S8. The result shows that the repeated addition of NaOH decreases PO…”

Section: Journal Of Chemical and Engineering Datamentioning

confidence: 99%

Development of Magnetic Particles Encrusted LDH-Admixed Biopolymeric Complex Beads for Selective Phosphate Remediation

Kumar

Viswanathan

2019

J. Chem. Eng. Data

View full text Add to dashboard Cite

In adsorption system, the powder form of adsorbents creates a technological bottleneck, such as a pressure drop during filtration, which limits their field applications. To overcome this drawback, a hybrid bead form of magnetic biopolymeric clay composites, namely, magnetic-chitosan-assisted hydrotalcite (MCSHT) and magnetic-alginate-assisted hydrotalcite (MAlgHT) composite beads, was prepared and utilized for phosphate (PO4 3–) adsorption from water. The prepared biopolymeric composite beads overcame the problem of eutrophication (algae growth), which occurred due to a very high content of PO4 3– in drinking water. The adsorbent properties were investigated in detail using X-ray diffraction, Brunauer–Emmett–Teller analysis, Fourier transform infrared spectroscopy, energy-dispersive X-ray analysis, inductively coupled plasma-optical emission spectroscopy, and scanning electron microscopy. The experimental data for PO4 3– adsorption onto MCSHT and MAlgHT composite beads were compared with Freundlich, Dubinin–Radushkevich, and Langmuir isotherm models. The order of PO4 3– adsorption was explained by a kinetic study. Ion-exchange, complexation, and electrostatic adsorption mechanism were developed for PO4 3– adsorption. The prepared MCSHT and MAlgHT composite beads could be reused and possessed excellent PO4 3– removal efficiency up to four regeneration cycles. The field study result suggested that the prepared MCSHT and MAlgHT composite beads could efficiently remove PO4 3– from contaminated water collected from a nearby endemic village.

show abstract

“…The recycling and reuse of the Zr@CSKN composite prepared by in situ and hydro methods was performed using NaOH as eluent in order to reduce the cost of the adsorbent. 76 The regeneration experiment was carried out by the addition of 0.1 g of nitrate and phosphate adsorbed Zr@ CSKN composite by both methods into 50 mL of 0.025 M NaOH solution. Afterward, the adsorbent was filtered, dried in hot air oven at 70 °C for 3 h, and then added with nitrate and phosphate solution.…”

Section: Table 1 Bet Textural Properties Of the Adsorbentsmentioning

confidence: 99%

Hydrothermal Fabrication of Zirconium Oxyhydroxide Capped Chitosan/Kaolin Framework for Highly Selective Nitrate and Phosphate Retention

Kumar

Viswanathan

2018

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In recent years, hydrothermal technology has been paid more attention because of its unique advantages like large surface area and high porous nature. In the present study, chitosan (CS) embedded kaolin (KN) clay, namely, CSKN composite, was prepared. To enhance the sorption capacity (SC) and selectivity, zirconium oxyhydroxide (ZrO(OH)2) was coated onto CSKN composite to get Zr@CSKN composite using in situ precipitation (In situ) and hydrothermal (Hydro) methods. The developed Zr@CSKN composite was used toward nitrate and phosphate removal, which helps in the minimization of methemoglobinemia (blue baby syndrome) and eutrophication. The adsorbents were characterized using FTIR, XRD, SEM, BET, and EDAX with mapping analysis. Various adsorption influencing factors like contact time, adsorbent dosage, pH, co-anions, initial ion concentration, and temperature were optimized. The experimental data was fitted with various isotherms and thermodynamic parameters to find the nature of adsorption. The reuse and field studies of Zr@CSKN composite were also examined.

show abstract

Preparation of hollow Fe-Al binary metal oxyhydroxide for efficient aqueous fluoride removal

Abstract: h i g h l i g h t s• Hollow Fe-Al binary metal oxyhydroxide (FeAl-OOH) was fabricated by sacrificial template method.• Protonation abilities of the oxygen binding sites were intensified by Al incorporation.

Cited by 19 publications

References 49 publications

High-efficiency N-doped activated carbon-based defluoridation adsorbent prepared from itaconic acid fermentation waste liquid

High-efficiency N-doped activated carbon-based defluoridation adsorbent prepared from itaconic acid fermentation waste liquid

Development of Magnetic Particles Encrusted LDH-Admixed Biopolymeric Complex Beads for Selective Phosphate Remediation

Hydrothermal Fabrication of Zirconium Oxyhydroxide Capped Chitosan/Kaolin Framework for Highly Selective Nitrate and Phosphate Retention

Contact Info

Product

Resources

About