Simultaneous removal of arsenate and antimonate in simulated and practical water samples by adsorption onto Zn/Fe layered double hydroxide

Lu, Hongtao; Zhu, Zhiliang; Zhang, Hua; Zhu, Jian; Qiu, Yanling

doi:10.1016/j.cej.2015.04.095

Cited by 157 publications

(52 citation statements)

References 49 publications

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“…With the presence of HCO3 − , the removal rate of Sb(V) by coagulation was slightly decreased because the hydrolysis of HCO3 − decreased the pH of the solution and affected the removal of Sb(V). However, with the presence of PO4 3− , the removal of Sb(III) and Sb(V) was decreased remarkably, which was ascribed to the competition of adsorption sites between Sb and phosphate ions due to the similar tetrahedral structure and s 2 p 3 outer electronic orbit [29]. HA also inhibited the removal of Sb(III) and Sb(V) remarkably.…”

Section: Effects Of Co-existing Substancesmentioning

confidence: 98%

An Effective Method to Remove Antimony in Water by Using Iron-Based Coagulants

Cheng¹,

Wang²,

Li³

et al. 2019

Water

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The effectiveness of antimony (Sb) removal by using iron-based coagulants was investigated in this study. The effects of pH, coagulant types and dose, equilibrium concentration, co-existing humic acid (HA) and anions, and oxidation process were studied. Effective Sb removal was achieved by using Fe(III)-based coagulants. However, the removal efficiency of Sb by using Fe(II)-based coagulants was very low. The removal capacity of Sb fitted the Sips adsorption isotherm well, which revealed that the heterogeneous adsorption process onto the formed hydrous ferric oxide played an important role in Sb removal, and the mechanism was further supported by Fourier transform infrared spectrum analysis. Sb removal was inhibited by the presence of HA and phosphate, as well as oxidation and aeration. Therefore, coagulation by using Fe(III)-based coagulants without oxidation is an effective and promising method for removing Sb in aqueous solution.

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Section: Effects Of Co-existing Substancesmentioning

confidence: 98%

An Effective Method to Remove Antimony in Water by Using Iron-Based Coagulants

Cheng¹,

Wang²,

Li³

et al. 2019

Water

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“…Zhang et al studied the sorption of bromate using Zn‐Fe LDH prepared under 120°C . Lu et al studied the sorption of arsenate and antimonate by Zn‐Fe LDH . Both of these 2 studies reported that phosphate displayed the most remarkable competition effect for Zn‐Fe‐LDH adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Yang

Liu

Lǚ

et al. 2018

Surface & Interface Analysis

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Zn-Fe layered double hydroxide with chloride intercalation (ZFCL) was synthesized by a coprecipitation method at room temperature. ZFCL was characterized by N 2 adsorptiondesorption isotherms, X-ray diffraction, scanning electron microscope, Zeta-sizer analyzer, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The results showed that ZFCL had large surface area and layered structure. The maximum adsorption capacity of ZFCL was 150.6 mg/g at 25°C. That was higher than most other adsorbent which were reported. The kinetic data were described better by the pseudo-second-order adsorption kinetic rate model. The adsorption isotherm on the adsorbent was described by Langmuir, Freundlich, and Sips models at pH 6 and followed the fitting order: Sips >Freundlich>Langmuir. Thermodynamic analyses indicated that the phosphate adsorption on ZFCL was endothermic and spontaneous in nature. The sequence of coexisting cations and anions competing with phosphate was Ca 2+ > Mg 2+ > Na + and SO 4 2− > NO 3 − > Cl − . ZFCL can be regenerated by the sequential use of NaOH and ZnCl 2 . The adsorption capacity remained high as 108.6 mg/g after regeneration of 3 times. The results of zeta potential, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy analyses indicated that the phosphate adsorption mechanisms involved ion exchange, Zn 3 (PO 4 ) 2 precipitation, and the formation of inner-sphere complex via replacement of surface hydroxyl groups by phosphate.

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“…The absorption peaks at 3394 cm −1 and 1629 cm −1 illustrates the OH stretching and bending, respectively, because of the adsorbed water molecules 44 while the those at 1382 cm −1 and 1480 cm −1 assigned to the ν 3 stretching vibration of the NO 3 45 and carbonate 46 groups, and the peaks at the low wave number attributed to the metal-oxygen bond absorption. 47 X-ray photoelectron spectroscopy was performed to confirm the ingredients elemental composition of the prepared ternary nanocomposite and to determine its oxidation state. Figure 2 presents the XPS spectrum of the inorganic nanomaterials forming the ternary nanocomposite.…”

Section: Resultsmentioning

confidence: 99%

Prostate Cancer Cellular Uptake of Ternary Titanate Nanotubes/CuFe2O4/Zn-Fe Mixed Metal Oxides Nanocomposite

El-Shahawy¹,

Moaty²,

Zaki³

et al. 2020

IJN

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Background: Certainly, there is a demand for stronger recognition of how nanoparticles can move through the cell membrane. Prostate cancer is one of the forcing sources of cancerrelevant deaths among men. Aim of the Work: The current research studied the power of prostate cancer cells to uptake a ternary nanocomposite TNT/CuFe 2 O 4 /Zn-Fe mixed metal oxides (MMO). Methodology: The nanocomposite was synthesized by a chemical method and characterized by a High-resolution transmission electron microscope, Field emission scanning electron microscope, X-ray diffraction, Fourier transmission infra-red, X-ray photoelectron spectroscopy, dynamic light scattering. Besides, it was implemented as an inorganic anticancer agent versus Prostate cancer PC-3 cells. Results: The results revealed cellular uptake validity, cell viability reduction, ultra-structures alterations, morphological changes and membrane damage of PC-3 cells. Conclusion: The prepared ternary nanocomposite was highly uptake by PC-3 cells and possessed cytotoxicity that was dose and time-dependent. To conclude, the study offered the potential of the investigated ternary nanocomposite as a promising prostate anticancer agent. BackgroundInvestigations have indicated that 25% of men are diagnosed with prostate cancer (PCa). 1 The clinical diagnostic approach is testing the prostate-specific antigen (PSA) level, where a concentration ˃ 4 ng/mL is considered a risk of biopsy. 2 The routine diagnostic technique is the digital rectal examination, and Multi-parametric-magnetic resonance imaging allows the potential diagnosis of PCa. 3 The distinct five stages of PCa are (zero) I, II, III, and IV, 4 and most cases of prostate cancer metastasis develop in the lymph nodes and the bones. 5 Choice of the treatment procedure, whatever surgery, radiation, hormone, Cryo-therapy, Vaccine, and Bone-directed treatment depends on the clinical stage, the age, and the general health of the individual. 6 The potential complications of the mentioned approaches are serious to consider. 7 The prostate size is the fundamental limitation of surgery, and 5 to 20% of cases suffer from stress incontinence after radical prostatectomy. Hormonal therapy leads to loss of libido, bone, and muscle mass. 8 Further, 30 to 50% experience erectile dysfunction after radiation therapy, 9 and urinary retention, urgency, and frequency are more common in Brachytherapy.

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Simultaneous removal of arsenate and antimonate in simulated and practical water samples by adsorption onto Zn/Fe layered double hydroxide

Cited by 157 publications

References 49 publications

An Effective Method to Remove Antimony in Water by Using Iron-Based Coagulants

An Effective Method to Remove Antimony in Water by Using Iron-Based Coagulants

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

<p>Prostate Cancer Cellular Uptake of Ternary Titanate Nanotubes/CuFe<sub>2</sub>O<sub>4</sub>/Zn-Fe Mixed Metal Oxides Nanocomposite</p>

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