Efficient removal arsenate from water by biochar-loaded Ce3+-enriched ultra-fine ceria nanoparticles through adsorption-precipitation

Wang, Yi; Chen, Xuelin; Yan, Jingfan; Wang, Tianyu; Xie, Xiaowen; Yang, Sen

doi:10.1016/j.scitotenv.2021.148691

Cited by 20 publications

(5 citation statements)

References 62 publications

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“…This pattern was also observed in the XRD diffractogram of Ce–Py–MSK, demonstrating the existence of a carbon layer with CeO 2 nanoparticles [ 66 ]. Furthermore, the XRD diffractogram of Ce–Py–MSK reveals three strong peaks confirming the presence of cubic CeO 2 (ICDD: 98-002-8709) at 2θ 28.67°, 47.69°, and 56.60° corresponding to the (111), (220) and (311) planes of CeO 2 nanoparticles, respectively [ 67 , 68 ]. The XRD findings further ensure the existence of cubic CeO 2 nanoparticles on Ce–Py–MSK.…”

Section: Resultsmentioning

confidence: 99%

Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel

El-Azazy¹,

El-Shafie²,

Al-Mulla³

et al. 2023

Heliyon

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Section: Resultsmentioning

confidence: 99%

Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel

El-Azazy¹,

El-Shafie²,

Al-Mulla³

et al. 2023

Heliyon

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“…The As3d result after As(V) adsorption showed a peak from As(V)–O bonding (45.4 eV), indicating that As(V) was adsorbed without reduction into As (III) (Figure 4 (g)) 62 . Previous studies have shown that As(V) can react with FeOOH, forming precipitates, such as FeAsO 4 ·2H 2 O (scorodite), which can dissolve at high pH (> 7) according to Equation 63 .…”

Section: Resultsmentioning

confidence: 99%

“…The As3d result after As(V) adsorption showed a peak from As(V)-O bonding (45.4 eV), indicating that As(V) was adsorbed without reduction into As (III) (Figure 4 (g)). 62 Previous studies have shown that As(V) can react with FeOOH, forming precipitates, such as FeAsO 4 Á2H 2 O (scorodite), which can dissolve at high pH (> 7) according to Equation 5. 63 However, in this study, as shown in Figure 3, despite the significantly high pH of 11.25 observed in FS-BC-900 after As(V) adsorption, the adsorption of As(V) remained effective.…”

Section: Effect Of Pyrolysis Temperature On As(v) Adsorptionmentioning

confidence: 99%

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Cho,

Kyu‐Kang,

Lee

et al. 2023

Applied Organom Chemis

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Significant quantities of Fenton sludge (FS) are produced during the treatment of industrial wastewater from the plating industry because of the removal of residual organic matter and color‐causing substances. This study proposes repurposing waste FS as a valuable resource to contribute to environmentally favorable remediation initiatives. This study focuses on producing Fenton sludge biochar (FS‐BC), which effectively removes As(V) from wastewater and offers a sustainable solution for wastewater treatment. Different FS‐BC samples were produced at various pyrolysis temperatures (300–900 °C), with FS‐BC‐900 exhibiting the greatest As(V) adsorption capacity. As(V) removal was primarily mediated by electrostatic attraction with iron oxide, and adsorption via inner‐sphere complex formation, as revealed by the XPS analysis. FS‐BC‐900 had a remarkable maximum As(V) adsorption capacity of 148.7 mg/g (initial concentration: 100–900 mg/l; reaction time: 96 h; pH 7.86), surpassing many other adsorbents reported in the literature. FS‐BC‐900 also demonstrated a high As(V) removal percentage, with 6.67 g/l of FS‐BC‐900 removing 96.8% of the As(V). Notably, the adsorption of As(V) by FS‐BC‐900 was affected by certain factors, including pH and carbonate presence. High pH and carbonate inhibited the ability of FS‐BC‐900 to adsorb As(V). This study presents a novel method for utilizing FS to combat As(V)‐contaminated water‐induced environmental contamination. This study contributes to eco‐friendly and sustainable wastewater treatment and As(V) remediation strategies by transforming waste into valuable resources.

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“…Heavy metal ions are toxic, non-biodegradable, and bioaccumulative. Thus, their removal requires urgent attention. , Heavy metals can be removed from aqueous solutions via ion exchange, precipitation, adsorption, electrolysis, and membrane separation methods . Among these methods, adsorption is one of the more effective and economical methods.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Quenching and Highly Selective Adsorption of Ag⁺ Using N-Doped Graphene Quantum Dots/Poly(vinyl alcohol) Composite Membrane

Ting

Yang

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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Fabrication of composite adsorbents with exceptional fluorescence performance has attracted increasing attention. In this study, a nitrogen-doped graphene quantum dots (NGQDs)/poly(vinyl alcohol) (PVA) composite membrane (NGQDs-PVA) with high adsorption selectivity and fluorescence quenching for Ag + was prepared via simple cross-linking. The SEM characterization showed that the NGQDs were uniformly distributed in PVA, indicating that the material exhibited fluorescence characteristics of quantum dots. C−O, −COOH, −NH 2 , and −OH functional groups in NGQDs-PVA complexed with a great amount of Ag + , and −NH− reduced a small amount of Ag + to Ag 0 . The pseudo-firstorder kinetic and Langmuir models were used to describe the adsorption process of heavy metals using the composite. The maximum adsorption capacity was 317.35 mg/g (Langmuir model fitting, pH = 4, T = 40 °C). When the fluorescence of NGQDs-PVA was quenched as the number of Ag + adsorbed increased, the change in fluorescence intensity was used to qualitatively quantify the adsorption process.

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Efficient removal arsenate from water by biochar-loaded Ce3+-enriched ultra-fine ceria nanoparticles through adsorption-precipitation

Cited by 20 publications

References 62 publications

Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel

Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Fluorescence Quenching and Highly Selective Adsorption of Ag⁺ Using N-Doped Graphene Quantum Dots/Poly(vinyl alcohol) Composite Membrane

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Efficient removal arsenate from water by biochar-loaded Ce3+-enriched ultra-fine ceria nanoparticles through adsorption-precipitation

Cited by 20 publications

References 62 publications

Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel

Enhanced adsorptive removal of rifampicin and tigecycline from single system using nano-ceria decorated biochar of mango seed kernel

Valorization of Fenton sludge by pyrolysis as a green adsorbent for arsenate removal

Fluorescence Quenching and Highly Selective Adsorption of Ag+ Using N-Doped Graphene Quantum Dots/Poly(vinyl alcohol) Composite Membrane

Contact Info

Product

Resources

About

Fluorescence Quenching and Highly Selective Adsorption of Ag⁺ Using N-Doped Graphene Quantum Dots/Poly(vinyl alcohol) Composite Membrane