Sorption Studies of Chromium(VI) onto Cerium/Ferroferric Oxide Composites

Hu, Bin; Wu, Lieshan; Ou, Mengyin; Wang, Xinting; Tang, Yuhong

doi:10.1007/s10904-021-01944-z

Cited by 11 publications

(6 citation statements)

References 55 publications

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“…The peak shape of PDF#85-1436 is in good agreement, indicating that its main component is Fe 3 O 4 , which is a pure inverse sine spinel material with a single-phase [36]. In addition, the X-ray diffraction pattern of Fe 3 O 4 has a sharp diffraction apex, indicating that the self-made Fe 3 O 4 has high crystallinity [37].…”

Section: Discussionmentioning

confidence: 69%

Adsorption Performance of Cd(II) by Chitosan-Fe3O4-Modified Fish Bone Char

Yang

Luo

Sun

et al. 2022

IJERPH

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In order to develop a low-cost, fast, and efficient adsorbent, the fish bone charcoal B600 prepared at 600 °C was modified by chitosan (Cs) and Fe3O4 to produce the material Cs-Fe3O4-B600. Results showed that Cs-Fe3O4-B600 had magnetic responsiveness and can achieve solid–liquid separation, macropores disappeared, pore volume and specific surface area are increased, and amino functional groups appear on the surface. The adsorption process of Cd(II) by Cs-Fe3O4-B600 conformed best to the pseudo-second order kinetics model and the Langmuir model, respectively. The behavior over a whole range of adsorption was consistent with chemical adsorption being the rate-controlling step, which is a very fast adsorption process, and the isothermal adsorption is mainly monolayer adsorption, which belongs to favorable adsorption. In addition, the saturated adsorption capacity obtained for the Cs-Fe3O4-B600 to Cd(II) was 64.31 mg·g−1, which was 1.7 times than B600. The structure and morphology of Cs-Fe3O4-B600 were characterized through SEM-EDS, TEM, FTIR, and XRD, indicating that the main mechanism of Cs-Fe3O4-B600 and Cd(II) is mainly the complexation of amino groups, and it also includes part of the ion exchange between Cd(II) and Fe3O4. Therefore, Cs-Fe3O4-B600 can be employed as an effective agent for remediation of Cd contaminated water.

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Section: Discussionmentioning

confidence: 69%

Adsorption Performance of Cd(II) by Chitosan-Fe3O4-Modified Fish Bone Char

Yang

Luo

Sun

et al. 2022

IJERPH

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“…Co and Cf are the initial and final concentration of adsorbate solution (µg/L). V and M are the volume of the solution (mL) and mass of the adsorbent dosage (mg), respectively [28][29][30][31].…”

Section: Batch Adsorption Studymentioning

confidence: 99%

Enriching Trace Level Adsorption Affinity of As3+ Ion Using Hydrothermally Synthesized Iron-Doped Hydroxyapatite Nanorods

Panchu

Sekar

Rajaram

et al. 2021

J Inorg Organomet Polym

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Contamination of arsenic in the form of arsenite (As 3+ ) and arsenate (As 5+ ) in potable water causes serious illness in the human body even at a very low concentration (10 µg / L). As 3+ is comparatively 60 times more toxic than As 5+ species. Hence, this work is focused on the preparation of adsorbents for efficient removal of As 3+ with higher adsorption affinity at trace level (≤50 µg/L). Here, iron-doped hydroxyapatite (Fe-HAp) synthesized by hydrothermal technique is employed as an efficient adsorbent. A very less quantity of Fe 2+ ion (0.5 wt %) is incorporated in the tetrahedral and octahedral sites of the HAp lattice along the c-axis which lead to drastic reduction in particle size (400%) and enhancing the specific surface area (105%), colloidal stability, and adsorption affinity. The maximum adsorption capacity of As 3+ is 139±2 µg/g and 183±2 µg/g for HAp and Fe-HAp, respectively. The adsorption rate of Fe-HAp is very rapid which is 538% higher compared to HAp and also the As 3+ adsorption affinity or sensitivity (0.71 µg/L) significantly improved 83-99% when compared to the adsorbents reported in the previous literature so far. The monolayer adsorption of As 3+ is purely strong chemisorption as confirmed by the Langmuir and Dubinin-Radushkevich (DKR) isotherm. The structure and morphology of HAp and Fe-HAp remain unchanged after the adsorption of As 3+ ions and also no secondary toxic products were observed. Hence, the above results reveal Fe-HAp as an efficient and low-cost adsorbent for removal of highly toxic As 3+ ions at the trace level.

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“…Chromium is poisonous because of its carcinogenic, mutagenic and teratogenic properties [2]. Strong exposure to hexavalent chromium has been correlated to malignancy in the intestinal system [3]. Also, in some exposure rate may causes vomiting, gastric pain, nausea, hemorrhage, and acute diarrhea.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, Characterization and Adsorption Investigation of Nano Zinc Oxide–Sodium Alginate Beads for Effective Removal of Chromium (VI) from Aqueous Solution

Hezma

Shaltout

Kabary

et al. 2023

J Inorg Organomet Polym

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Alginate–zinc oxide (Alg–ZnO) biocomposite was synthesized and tested as a chromium ions Cr(VI) adsorbent for environmental applications. Alg–ZnO biocomposite was prepared by the interaction between sodium alginate biopolymer and zinc oxide nanoparticles (ZnO–NPs), prepared by modified wet chemical method. The solid adsorption characteristics of the synthesized Alg–ZnO biocomposite were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV–Vis spectroscopy. Adsorption isotherms of chromium ions on the prepared Alg–ZnO biocomposite were investigated with varying the initial concentration of Cr(VI) under different application conditions such as pH, contact time, adsorbent dosage, and temperature. Adsorption of Cr(VI) was investigated by different isotherm models such as Langmuir, Freundlich, Temkin and Dubinin–Radushkevich models. Maximum adsorption capacities (31.09 and 34.63 mg/g) were achieved by ZnO–NPs and Alg–ZnO, respectively at 25 °C. The results of isotherm models indicate the perfect applicability of Langmuir and Dubinin–Radushkevich models, revealing the dominance of monolayer and the physisorption of chromium ions onto the studied adsorbents.

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Sorption Studies of Chromium(VI) onto Cerium/Ferroferric Oxide Composites

Cited by 11 publications

References 55 publications

Adsorption Performance of Cd(II) by Chitosan-Fe3O4-Modified Fish Bone Char

Adsorption Performance of Cd(II) by Chitosan-Fe3O4-Modified Fish Bone Char

Enriching Trace Level Adsorption Affinity of As3+ Ion Using Hydrothermally Synthesized Iron-Doped Hydroxyapatite Nanorods

Fabrication, Characterization and Adsorption Investigation of Nano Zinc Oxide–Sodium Alginate Beads for Effective Removal of Chromium (VI) from Aqueous Solution

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