Study of the Adsorption of Arsenic (III and V) by Magnetite Nanoparticles Synthetized via AACVD

Monárrez-Cordero, B.E.; Amézaga-Madrid, P.; Leyva‐Porras, César; Pizá-Ruíz, P.; Miki‐Yoshida, M.

doi:10.1590/1980-5373-mr-2015-0667

Cited by 34 publications

(7 citation statements)

References 49 publications

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“…However, very low R 2 values indicate that the experimental data fit the DR adsorption isotherm model poorly, and therefore, the values obtained may fall outside the confidence interval. In other studies, for example, using magnetite NPs, the adsorption free energy was calculated as 7.6 kJ/mol, and the interactions between As(III) and the NPs were of physical type [ 66 ]. Similar results (0.84 kJ/mol) have been reported for the adsorption of arsenic by copper slug [ 67 ].…”

Section: Resultsmentioning

confidence: 99%

Kinetic and Isotherm Study of As(III) Removal from Aqueous Solution by PET Track-Etched Membranes Loaded with Copper Microtubes

et al. 2021

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This paper reports on the synthesis and structure elucidation of track-etched membranes (TeMs) with electrolessly deposited copper microtubes (prepared in etched-only and oxidized polyethylene terephthalate (PET) TeMs), as well as on the comparative testing of arsenic (III) ion removal capacities through bath adsorption experiments. The structure and composition of composites were investigated by X-ray diffraction technique and scanning electron and atomic force microscopies. It was determined that adsorption followed pseudo-second-order kinetics, and the adsorption rate constants were calculated. A comparative study of the applicability of the adsorption models of Langmuir, Freundlich, and Dubinin–Radushkevich was carried out in order to describe the experimental isotherms of the prepared composite TeMs. The constants and parameters of all of the above equations were determined. By comparing the regression coefficients R2, it was shown that the Freundlich model describes the experimental data on the adsorption of arsenic through the studied samples better than others. Free energy of As(III) adsorption on the samples was determined using the Dubinin–Radushkevich isotherm model and was found to be 17.2 and 31.6 kJ/mol for Cu/PET and Cu/Ox_PET samples, respectively. The high EDr value observed for the Cu/Ox_PET composite indicates that the interaction between the adsorbate and the composite is based on chemisorption.

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Section: Resultsmentioning

confidence: 99%

Kinetic and Isotherm Study of As(III) Removal from Aqueous Solution by PET Track-Etched Membranes Loaded with Copper Microtubes

et al. 2021

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“…The parameters of both the models, Langmuir and Freundlich are mentioned in Table 2. The values are being checked by different researches and they used three isotherm models [48,49], whereas this study performed only two isotherm models.…”

Section: Langmuir Isotherm Modelmentioning

confidence: 99%

Effective Removal of Arsenic in Water by Inductively Coupled Plasma Mass Spectrometry: Equilibrium and Kinetic Study

Hassan¹,

Syed²,

Ahmed³

et al. 2021

Preprint

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In this study, we report the efficient catalytic activity for the removal of arsenic contamination from water using L-cysteine derived iron oxide nanoparticles. The catalytic ability was checked by ICP-MS. Best optimized magnetite iron oxide nano particles at pH-10 were confirmed through different characterization techniques such as TEM, XRD, EDS, FTIR and zeta potential analyzer, respectively. TEM was confirmed the smallest particle size in the range of 5-30 nm. The application study was performed by ICP-MS instrument to check the removal efficiency of arsenic by iron oxide magnetite nano catalyst first on synthetic water prepared on laboratory was 99.8% and then checked on real water samples collected was 81.09% from arsenic contaminated sites areas of Larkana exceeded arsenic concentration from 10ug/l as compared to WHO limit, The adsorption capacity of arsenic on the prepared porous iron oxide nanoparticles was 1.96 mg/g proved that the particles having higher surface area with excellent catalytic degradation property. The adsorption dataset best fits in the Langmuir model and obeyed the pseudo-second-order model. Herein, we report the simple and greener synthesized iron oxide nano-adsorbent and their effective ability for the removal of arsenic from water source using advanced ICP-MS technique.

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“…The free energy of adsorption (E) for MNp-OP, MNp-CS and MNp-CO, were 27.3 kJ/mol, 35.5 kJ/mol and 36.2 kJ/mol, respectively, implying that chemisorption may be the preferred sorption mechanism of As on the magnetic nanoparticles. Namely, when the value of E is less than 20 kJ/mol, the adsorption process is called physisorption, if it is between 20-40 kJ/mol the process is known as ionic exchange, and when E is larger than 40 kJ/mol it is a chemisorption process [70].…”

Section: Arsenic Adsorption Isothermsmentioning

confidence: 99%

Arsenic Removal from Water by Green Synthesized Magnetic Nanoparticles

Nikić

Tubić

Watson

et al. 2019

Water

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Magnetite nanoparticles were synthesized by a simple and ecofriendly method using onion peel (MNp-OP) and corn silk extract (MNp-CS), in order to develop new low-cost adsorbents for arsenic removal from groundwater. As a point of comparison, magnetite nanoparticles were also synthesized with a conventional chemical process (MNp-CO). The antioxidant potential of onion peel and corn silk extracts was determined using ferric reducing antioxidant power (FRAP) and free radical (DPPH) scavenging assays, including the total phenolics, flavonoids and tannins contents. The synthesized magnetite nanoparticles were characterised using different techniques (Scanning electron microscope/Energy dispersive spectroscopy (SEM/EDS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) surface area analyzer). The adsorption capacity of MNp-OP and MNp-CS and the arsenic removal mechanism of these novel adsorbents was investigated through kinetic and equilibrium experiments and their corresponding mathematical models. Characterisation of MNp-OP and MNp-CS shows high BET specific surface areas of 243 m2/g and 261 m2/g, respectively. XRD and FTIR analysis confirmed the formation and presence of magnetite nanoparticles. The arsenic adsorption mechanism on MNp-OP, MNp-CS and MNp-CO involves chemisorption, intraparticle and external diffusion. Maximal adsorption capacities of MNp-OP, MNp-CS and MNp-CO were 1.86, 2.79, and 1.30 mg/g respectively. The green synthesis applied using onion peel and corn silk extracts was cost effective and environmentally friendly, and results in adsorbents with a high capacity for arsenic and magnetic properties, making them a very promising alternative approach in the treatment of arsenic contaminated groundwater.

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Study of the Adsorption of Arsenic (III and V) by Magnetite Nanoparticles Synthetized via AACVD

Cited by 34 publications

References 49 publications

Kinetic and Isotherm Study of As(III) Removal from Aqueous Solution by PET Track-Etched Membranes Loaded with Copper Microtubes

Kinetic and Isotherm Study of As(III) Removal from Aqueous Solution by PET Track-Etched Membranes Loaded with Copper Microtubes

Effective Removal of Arsenic in Water by Inductively Coupled Plasma Mass Spectrometry: Equilibrium and Kinetic Study

Arsenic Removal from Water by Green Synthesized Magnetic Nanoparticles

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