An innovative lanthanum carbonate grafted microfibrous composite for phosphate adsorption in wastewater

Yang, Yi; Koh, Kok Yuen; Li, Ruiying; Zhang, Huiping; Yan, Ying; Chen, Jiaping

doi:10.1016/j.jhazmat.2019.121952

Cited by 127 publications

(13 citation statements)

References 66 publications

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“…Biological and chemical precipitation processes produce a large amount of surplus sludge, which may cause secondary pollution and adversely affect the subsequent treatment. 17 The adsorption method is widely used because of its simple operation, low cost, and high removal efficiency. 18 Workers have been using different materials such as MOFs, 19 slag, 20 zeolite, 21 clay, 22 bentonite, 23 biochar, 24 polymers, 25 etc.…”

Section: Introductionmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Introductionmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…Besides, given the price of phosphates which continues to increase, the recovery and trapping of phosphates species from aqueous media became essential and seems to be a key advantage. Several methods of recovery of phosphates are used such as: chemical precipitation, [1] adsorption, [8,9] electro‐coagulation, [10] biological processes, [11] ion exchange, [12] membrane technologies, [3] and photocatalysis [13,14] . Unlike to e. g. nitrates and sulfates, the phosphates are neither oxidizable nor reducible and remain in their form (coordination state); then, it appears that photocatalysis is the most effective means for the trapping and recovery of phosphates in an aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Easy Recovery of Orthophosphates Contaminants in Water Using Amberlite‐732 Cationic‐Resin Exchanged by Ce³⁺and Ce³⁺‐Au³⁺ Species

et al. 2022

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This report discusses the efficiency of photo‐recovery of orthophosphate anions in water under visible irradiation using materials containing amorphous carbon, ceria and gold‐ceria species. Catalysts were obtained by the exchange of Amberlite‐732 polymeric‐resin with isolated Ce(III) and co‐mixing of Ce(III)‐Au(III) cations. Syntheses were developed for molar ratios Ce(III)/3H+=100 and Au(III)‐Ce(III)/3H+=0.01. Solids were treated at 800 °C under Air or Ar atmosphere then characterized by: X‐ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy coupled to energy‐dispersive X‐ray spectroscopy (EDS), X‐ray photoemission spectroscopy (XPS) and UV‐visible spectroscopy. By XRD, non‐stoichiometric Ce2.658S4 sulfide and particles of metallic gold are identified in Ce‐Au‐Amb‐Ar and in the case of Ce‐Au‐Amb‐Air, mixture of CeO2 and Au0 is clearly observed. Moreover, XPS study of Ce3d emission spectra showed well resolved electronic states of the spin‐orbit Ce3d5/2 and Ce3d3/2 levels in the Ce4+ and Ce3+ oxidation states confirming coexistence of Ce(IV)/Ce(III). On the surfaces of both Ce‐Au‐Amb‐Air and Ce‐Au‐Amb‐Ar, XPS revealed metallic Au species. A certain amount of carbon, identified by EDS and XPS, corresponds to poorly ordered carbon formed by the resin decomposition during thermal treatments under Air and Ar. The UV‐vis spectroscopy was valuable to quantify the remaining PO43− anions in solution (at each moment of reaction) using “Molybdenum Blue” method. Photo‐recovery of orthophosphates under visible irradiation yields optimal trapping of ∼75 % of PO43− on Ce‐Au‐Amb‐Ar, attributed to a catalyst surface enrichment with Ce3+ species, which promoted structural oxygen vacancies.

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“…membrane filtration [11], reverse osmosis , biological treatment , electrolysis [12], coagulation [13], chemical precipitation, and adsorption methods. Among commonly used methods, the adsorption process using bio sorbent and natural adsorbents has attracted attention due to its advantages namely easy to operate, simplicity, cost-effective, and high efficiency [14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Arsenic removal performance of granular adsorbents using novel clinoptilolites modified with iron nanoparticles

Nami

Mousavi

Fazli-Shokouhi

et al. 2022

Preprint

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In this research, novel beads were successfully synthesized from natural clinoptilolite (CL) modified with iron nanoparticles (FCL). Beads were prepared using alginate (A) and chitosan (C). FESEM, EDX, XRD, and FTIR techniques were employed to characterize the CL, FCL, A-bead, and C-bead. A comprehensive series of batch adsorption experiments were conducted utilizing both prepared samples to study the influential parameters. The most effective cross-linking solutions of chitosan and alginate were sodium tripolyphosphate/sodium hydroxide and 4% Ferric chloride, respectively. The optimum ratio of chitosan/FCL and alginate/FCL was 1:3 and 1:4, sequentially. The effect of initial arsenic concentration, and adsorbent concentration were evaluated. The optimal removal rate of 86% and 93.27% were found for A-beads and C-beads using their optimized initial concentration. Moreover, the best arsenic removal performance was seen 1 g/L for both A-beads and C-beads. The removal rate of 0.3, 0.6, 1, 1.5, and 2 g/L of alginate was 75.12%, 81.15%, 82.21%, 82.90%, and 83.15%, respectively. On the other hand, C-beads had higher removal rates at the considered contents. The removal rate of 0.3, 0.6, 1, 1.5, and 2 g/L of C-beads were 75.18%, 88.78%, 91.86%, 92.25%, and 92.4%, respectively. Additionally, Langmuir and Freundlich isotherms were employed to find the maximum adsorption capacity. The maximum adsorption capacity of qmax of alginate and chitosan beads was 10000 𝜇g/g.

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An innovative lanthanum carbonate grafted microfibrous composite for phosphate adsorption in wastewater

Cited by 127 publications

References 66 publications

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Photocatalytic Easy Recovery of Orthophosphates Contaminants in Water Using Amberlite‐732 Cationic‐Resin Exchanged by Ce³⁺and Ce³⁺‐Au³⁺ Species

Arsenic removal performance of granular adsorbents using novel clinoptilolites modified with iron nanoparticles

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An innovative lanthanum carbonate grafted microfibrous composite for phosphate adsorption in wastewater

Cited by 127 publications

References 66 publications

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Photocatalytic Easy Recovery of Orthophosphates Contaminants in Water Using Amberlite‐732 Cationic‐Resin Exchanged by Ce3+and Ce3+‐Au3+ Species

Arsenic removal performance of granular adsorbents using novel clinoptilolites modified with iron nanoparticles

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Photocatalytic Easy Recovery of Orthophosphates Contaminants in Water Using Amberlite‐732 Cationic‐Resin Exchanged by Ce³⁺and Ce³⁺‐Au³⁺ Species