Adsorption of lead(II) and chromium(VI) from aqueous environment onto metal-organic framework MIL-100(Fe): Synthesis, kinetics, equilibrium and thermodynamics

Forghani, Mojtaba; Azizi, Asghar; Livani, Milad Jamal; Kafshgari, Leila Asadi

doi:10.1016/j.jssc.2020.121636

Cited by 90 publications

(39 citation statements)

References 59 publications

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“…The decreasing adsoption efficiency at increasing pH showed that the adsorption mechanism most likely occurred via chemical interaction or substitution process instead of electrostatic forces (Goyal et al, 2021). The optimum adsorption of Pb 2+ in MIL-100(Fe), as reported previously by Forghani et al (2020), was ~65% at a pH 5.5. Greater Pb 2+ adsorption efficiency of MIL-100(Fe)-EDTA supports the previous result that EDTA increases the number of active sites of the adsorbent and consequently improves the adsorption capacity.…”

Section: Stability Test Of Materials In the Intestinal And Stomach Simulation Medium And Watersupporting

confidence: 64%

“…The XRD of the materials after the stability test also validated the results. As shown in Figure 5, the characteristic peak at 2θ = 11° for each material was maintained after contact with the mediums (Forghani et al, 2020), proving that the materials have high stability. However, in the intestinal simulation medium, the peaks of both MIL-100(Fe) and MIL-100(Fe)-EDTA displayed different intensities when compared to the other medium.…”

Section: Stability Test Of Materials In the Intestinal And Stomach Simulation Medium And Watermentioning

confidence: 75%

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In Situ Green Synthesis of Mil-100(Fe) Modified Edta as an Enhanced Candidate Detoxifying Agent of Lead Heavy Metal (Pb) and Its Adsorption Characteristics

Lestari

Meilani

Nurcahyo

et al. 2021

Preprint

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EDTA-modified MIL-100(Fe) (MIL = Matériaux de l′Institut Lavoisier) was successfully prepared in situ using an electrochemical method. The porous nature of the material and its high stability under intestinal and stomach conditions present it as a great candidate agent for lead detoxification. Kinetic and isotherm investigations revealed that the adsorption of Pb2+ ions in MIL-100(Fe)-EDTA followed a pseudo-second order kinetic model with a rate constant of 0.0109 g/mg.min and a Langmuir isotherm model with an adsorption energy of 31.29 kJ/mol. The synthesized MIL-100-EDTA showed three times enhanced performance than MIL-100(Fe) in Pb2+ adsorption study. Optimum adsorption was achieved at pH 3 at an initial concentration of 5 ppm and a contact time of 12 h, yielding adsorption efficiency and capacity of up to 86.65% and 3.68 mg/g, respectively.

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Section: Stability Test Of Materials In the Intestinal And Stomach Simulation Medium And Watersupporting

confidence: 64%

Section: Stability Test Of Materials In the Intestinal And Stomach Simulation Medium And Watermentioning

confidence: 75%

In Situ Green Synthesis of Mil-100(Fe) Modified Edta as an Enhanced Candidate Detoxifying Agent of Lead Heavy Metal (Pb) and Its Adsorption Characteristics

Lestari

Meilani

Nurcahyo

et al. 2021

Preprint

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“…The biosorption capacity of NaOH-P. squamosus quickly increased by increasing Co from 10 to 55 mg/L while no change was recorded at higher initial Pb(II) concentrations and a maximum level was approximately reached at 60.0 mg/L. These results show that the pores of NaOH-P. squamosus were completely full after a particular period and after that, increasing the metal concentration didn't have a significant effect on biosorption of Pb(II) ions [25,26].…”

Section: Effects Of Process Variables On Biosorption Capacitymentioning

confidence: 75%

An optimization study for bio-removal of lead from aqueous environments by alkali modified Polyporus Squamosus

Yılmaz

Ecer

Şahan

2021

MANAS Journal of Engineering

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Rapidly increasing industrialization and urbanization cause serious environmental pollution. Discharge of polluting material from various industries such as smelting, mining, ore processing, and metal plating into the environment without treatment causes serious pollution and can have dangerous effects on the environmental balance. The utilization of low-cost adsorbents from biological materials as a replacement for costly traditional methods for adsorption of heavy metal pollutants from wastewater was reviewed. This study aimed to investigate the biosorption of Pb(II) ions from aqueous solutions with NaOH-modified Polyporus squamosus biosorbent and optimize the biosorption conditions. Firstly, the parameters most influencing the response of the biosorption for Pb(II) (initial Pb(II) concentration (Co), pH, temperature and biomass dose) were determined using Central Composite Design (CCD). The optimum conditions were evaluated as 60.76 mg/L, 6.3, 25 °C, and 0.23 g for Co, initial pH, temperature and biomass dose, respectively. From the optimum conditions, the adsorption yield and the adsorption capacity were obtained as 93.8% and 23.63 mg/g, respectively.

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“…Chromium (VI) removal tests were initially carried out with a K 2 Cr 2 O 7 solution; in all cases, the pH was regulated along with H 2 SO 4 (25 % wt) to maintain the solution in a range of pH ¼ 2 AE 0.5 [14]. The experiments were carried out with 100 ml of the chromium solution and 1 g of zeolites.…”

Section: Evaluation Of Chromium (Vi) Removal With Zeolitementioning

confidence: 99%

“…Hydrogels derived from gelatin and eucalyptus residues indicated that the gelatin hydrogel and composite hydrogels presented great potential for chromium (VI) adsorption in solution with an adsorption value of 12.3 mg/g [13]. A metal-organic framework synthesized via a hydrothermal route and HF mineralizing agent [14] has been used to remove lead (II) and chromium (VI). It was observed that solution pH is a significant operating factor affecting the acid-base property of the sorbent surface and accordingly has an important role in the adsorption efficiency; in this work, 30.45 mg/g of Cr(VI) was removed.…”

Section: Introductionmentioning

confidence: 99%

Natural zeolite as a chromium VI removal agent in tannery effluents

Álvarez

Guerrón

Montero

2021

Heliyon

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This study concerns Cr(VI) removal using zeolites in a batch system for tannery effluent. In the initial stage, natural zeolite (ZN) and synthetic zeolite (ZS) were characterized, obtaining a Si/Al ratio of 4.64 and 1.60, and with predominant clinoptilolite and faujasite phases, the surface area of 9.34 and 25.82 m 2 /g and cation exchange capacity of 84.05 and 188.72 meq/100 g, respectively. Subsequently, ZN and ZS were activated with HCl and NaOH. Through preliminary tests, with a solution of K 2 Cr 2 O 7 , it was determined that the highest Cr(VI) removal for both, ZN and ZS, was with NaOH activation, obtaining 82 and 56% removal, respectively. According to Ecuadorian regulations, the Cr(VI) concentration exceeds the maximum permissible limits on the tannery effluent. For this effluent, it was determined that the highest Cr(VI) removal, 45%, is obtained with 1 g of ZN activated with NaOH and 100 mL of effluent. With ZN-NaOH, removal tests were carried out in a fixed bed with 5, 10, and 20 g of natural zeolite. The natural zeolite also has chromium removal capacity in the bed system, achieving similar removals to those obtained in the batch experiments, but decreasing the treatment time. Thus, both natural and synthetic zeolites can remove Cr(VI) in tannery effluents, achieving this effluent with permissible limits.

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Adsorption of lead(II) and chromium(VI) from aqueous environment onto metal-organic framework MIL-100(Fe): Synthesis, kinetics, equilibrium and thermodynamics

Cited by 90 publications

References 59 publications

In Situ Green Synthesis of Mil-100(Fe) Modified Edta as an Enhanced Candidate Detoxifying Agent of Lead Heavy Metal (Pb) and Its Adsorption Characteristics

In Situ Green Synthesis of Mil-100(Fe) Modified Edta as an Enhanced Candidate Detoxifying Agent of Lead Heavy Metal (Pb) and Its Adsorption Characteristics

An optimization study for bio-removal of lead from aqueous environments by alkali modified Polyporus Squamosus

Natural zeolite as a chromium VI removal agent in tannery effluents

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