Simultaneous Removal of Molybdenum, Antimony and Selenium Oxyanions from Wastewater by Adsorption on Supported Magnetite

Verbinnen, Bram; Block, Chantal; Lievens, P.; Brecht, Andres Van; Vandecasteele, Carlo

doi:10.1007/s12649-013-9200-8

Cited by 51 publications

(36 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A number of studies report that when pH is within the range 2-10, the sorption of Sb(V) by most iron based adsorbents increases significantly as the pH is increased from 2 to 3, maintaining the maximum sorption plateau over the pH range of 3 to 5, but decreasing significantly as the pH was increased above 5. As shown in Table 1, the optimum pH range for Sb(V) removal was 3-4 using Fe 3 O 4 [58]. Similar results were reported for the removal of Sb(V) using different iron based adsorbents, such as ferric hydroxide [37,38],hematite [48], hydrous ferric oxide [45,55], zero-valent iron [61][62][63], and Fe(III)-treated aerobic granules [23,57].…”

Section: Effect Of Phsupporting

confidence: 71%

“…The reason is that increments in initial concentration can stimulate adsorbents to produce numerous effective sites, but the increased proportion of effective sites is much less than the increased solute concentration. Table 1 shows that several adsorbents, such as hematite-modified magnetic nanoparticles [48], FeCl 3 -modifed activated carbon [52], iron oxide-coated olivine [53], zero-valent iron [62,63], Fe(III)-loaded saponified orange waste [51] and zeolite-supported magnetite [58], can achieve significant treatment effects when the initial concentration of antimony is low (<6 mg/L). By contrast, other adsorbents, such as Fe-Zr-D201 [49], graphene oxide and its magnetite composites [54], Fe-Mn binary oxide [36,37], FeCl 3 -modifed sepiolite [32], and Fe 2 O 3 -Fe 3 O 4 /C prepared with eucalyptus wood template [60] and ferric hydroxide [37], can achieve excellent treatment effects over a wide range of initial concentrations.…”

Section: Effect Of Initial Concentration Range and Adsorbents Dosementioning

confidence: 99%

“…The surface of these iron-based adsorbents is smooth. Sb(III) or Sb(V) adsorption onto Fe-Cu binary oxide [47], polymeric anion exchanger D201 loaded with nano HFO [55], calcite sands loaded with nano+ [55] and zeolite-supported magnetite [58] fits Freundlich and Langmuir adsorption models with reasonable success. The results imply that the adsorption process is associated with electrostatic interaction and ion exchange, and the surface of the adsorbents shows similarities in large pore volume but small aperture, as shown by scanning electron microscopy characterisation.…”

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

“…The adsorption of Sb(III) or Sb(V) onto most iron-based adsorbents follows the pseudo-second-order kinetic model [23,32,34,37,38,40,42,50,55,57,58,61]. The adsorption process is mainly classified as chemisorption, and the power source of adsorption is from the sharing or exchanging of electrons between the adsorbate and adsorbent.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

See 3 more Smart Citations

The Potential for the Treatment of Antimony-Containing Wastewater by Iron-Based Adsorbents

Deng

Jin

Ren

et al. 2017

Water

View full text Add to dashboard Cite

Antimony (Sb) and its compounds are considered as global priority pollutants. Elevated concentrations of antimony in natural and industrial process wastewater are of global concern, particularly given interest in the potential toxicity and harm to the environment from aquatic exposure. Iron-based materials for treatment by adsorption are widely regarded to have potential merit for the removal of trace contaminants from water and especially in the search for efficient and low-cost techniques. In this paper, we review the application of iron-based materials in the sorption treatment of antimony contaminated water. The interaction of Sb is discussed in relation to adsorption performance, influencing factors, mechanism, modelling of adsorption (isotherm, kinetic and thermodynamic models), advantages, drawbacks and the recent achievements in the field. Although iron-based adsorbents show promise, the following three aspects are in need of further study. Firstly, a select number of iron based binary metal oxide adsorbents should be further explored as they show superior performance compared to other systems. Secondly, the possibility of redox reactions and conversion between Sb(III) and Sb(V) during the adsorption process is unclear and requires further investigation. Thirdly, in order to achieve optimized control of preferential adsorption sites and functional groups, the mechanism of antimony removal has to be qualitatively and quantitatively resolved by combining the advantages of advanced characterization techniques such as Fourier transform infrared spectroscopy(FTIR), X-ray photoelectron spectroscopy (XPS), Atomic force microscope(AFM), X-ray absorption near edge structure(XANES), and other spectroscopic methods. We provide details on the achievements and limitations of each of these stages and point to the need for further research.

show abstract

Section: Effect Of Phsupporting

confidence: 71%

Section: Effect Of Initial Concentration Range and Adsorbents Dosementioning

confidence: 99%

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

Section: Adsorption Kineticsmentioning

confidence: 99%

See 2 more Smart Citations

The Potential for the Treatment of Antimony-Containing Wastewater by Iron-Based Adsorbents

Deng

Jin

Ren

et al. 2017

Water

View full text Add to dashboard Cite

show abstract

“…The two main adsorption mechanisms are inner-sphere complex formation (ionic binding on specific adsorbent sites) and outer-sphere complex formation (electrostatics interactions, adsorbate molecules do not bind directly to the surface, but are placed in the hydration shell). MoO 2À 4 and SbðOHÞ À 6 adsorb via inner-sphere complex formation on iron oxides and SeO 2À 4 via outer-sphere complex formation (Verbinnen et al, 2013). The adsorption of AsO 3À 4 is usually considered to happen via innersphere complex formation (Mohan and Pittman, 2007), but for the adsorption of CrO 2À 4 on iron oxides, both inner-and outersphere complexes are described (Fendorf et al, 1997;Khaodhiar et al, 2000;Gallios and Vaclavikova, 2008;Adegoke et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Oxyanions from Industrial Wastewater using Perlite‐Supported Magnetite

Verbinnen

Block

Vandecasteele

2016

Water Environment Research

Self Cite

View full text Add to dashboard Cite

Most studies on oxyanion adsorption focus on their removal from synthetic solutions. It is often claimed that the considered adsorbents can be used to treat real (industrial) wastewaters, but this is seldom tested. Perlite-supported magnetite was characterized first by determining its specific surface area, magnetite content and by examining the coating. Tests on a synthetic solution showed that at the ideal pH values (pH 3 to 5), the order of adsorption is Mo(VI) > As(V) > Sb(V) > Cr(VI) > Se(VI). Most oxyanions can be removed for more than 75% with an adsorbent dosage of 1 g/l. Furthermore, perlite-supported magnetite has a higher removal efficiency for oxyanions than commercially available adsorbents and comparable adsorbents described in literature. Perlite-supported magnetite is suitable for treating real wastewaters: it can remove several oxyanions simultaneously from the considered industrial wastewater, but the adsorption order changes due to the presence of interfering anions.

show abstract

Removal of molybdenum from wastewater using modified amino‐functional framework: A study of the adsorption properties

Saghian

Dehghanpour

Sharbatdaran

2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Herein, we have employed a convenient method to study kinetic and thermodynamic parameters of the adsorption of molybdenum from wastewater by using modified Zr-based metal-organic frameworks, UIO-66-NH2-X, as adsorbents. The frameworks were fabricated with a simple and fast method from terephthalic acids and Zirconium metal ions and modified via introduction of aldehyde groups using imine condensation. This is the first report in which MOFs have been utilized as adsorbents in molybdenum adsorption. The prepared adsorbents show high adsorption efficiency which is representative of an improvement compared to other literature. The experimental adsorption data could be well interpreted with the pseudo-second-order kinetics and the Langmuir isotherm model. Thermodynamic studies illustrated an exothermic spontaneous mechanism for the adsorption process.

show abstract

Simultaneous Removal of Molybdenum, Antimony and Selenium Oxyanions from Wastewater by Adsorption on Supported Magnetite

Cited by 51 publications

References 34 publications

The Potential for the Treatment of Antimony-Containing Wastewater by Iron-Based Adsorbents

The Potential for the Treatment of Antimony-Containing Wastewater by Iron-Based Adsorbents

Adsorption of Oxyanions from Industrial Wastewater using Perlite‐Supported Magnetite

Removal of molybdenum from wastewater using modified amino‐functional framework: A study of the adsorption properties

Contact Info

Product

Resources

About