Study of the removal efficiency of arsenic from aqueous solutions using Melia azedarach sawdust modified with FeO: isotherm and kinetic studies

Davodi, Mojtaba; Hossein, Arzani; Ramezani, Azam; Jamali-Behnam, Farideh; Bonyadi, Ziaeddin

doi:10.5004/dwt.2019.23217

Cited by 18 publications

(3 citation statements)

References 36 publications

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“…The removal of malachite in the early times, due to the availability of a large number of free surface active sites to absorb the dye, is done more quickly and then gradually the slope of the dye removal process is slowed down. This indicates that over time, the active sites become saturated and their number decreases (Davodi et al 2019;Kataria and Garg 2019).…”

Section: Contact Time and Its Effectmentioning

confidence: 99%

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Ultrasonic-assisted synthesis of Fe3O4 nanoparticles-loaded sawdust carbon for malachite green removal from aquatic solutions

2022

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MG, an organic compound composed of triphenyl methane, is often widely used in various industries, especially in the food, pharmaceutical and textile industries. This study emphasizes the green synthesis of novel magnetic iron oxide nanoparticles-loaded sawdust carbon (Fe3O4/SC) and their effect on the removal of MG from the aqueous solution. To obtain the optimum conditions of MG removal using the Box–Behnken model, the independent variables such as the initial MG concentration (10–100 mg/L), pH (3–9), reaction time (10–60 min), and Fe3O4/SC nanocomposites dose (0.2–1 g/L) were experimented. According to the quadratic model, the highest removal rate (89.22%) was found at the pH of 8.62, the contact time of 59.86 min, the Fe3O4/SC ncs dose of 0.59 g /L and the MG level of 17.62 mg/L. The MG removal rate follows the pseudo-second-order model and the Langmuir model. The maximum absorption capacity for MG was 41.66 mg/g. These findings suggest that the Fe3O4/SC ncs has a significant potential for the MG adsorption from aqueous solution.

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Section: Contact Time and Its Effectmentioning

confidence: 99%

“…Adsorption isotherms, including Freundlich, Langmuir, and Temkin isotherms, were examined in the presence of the above-mentioned variables. The equations related to kinetic and isotherm models were presented in the studies of Mohebbrad et al (2019) and Davodi et al (2019) (Fig. 1).…”

Section: Adsorption Kinetic and Isotherm Studiesmentioning

confidence: 99%

Ultrasonic-assisted synthesis of Fe3O4 nanoparticles-loaded sawdust carbon for malachite green removal from aquatic solutions

2022

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“…The experiments to determine the adsorption kinetics were carried out with an AMGG dose of 0.86 g/L, a MNZ concentration of 50-200 mg/L, a pH of 5.9, and a contact time of 10− 60 min. The kinetics of MNZ adsorption onto AMGG was studied using the well-known pseudo-firstorder, pseudo-second-order and intra-particle diffusion models [46]. The pseudo-first-order model is displayed as Eq.…”

Section: Adsorption Kinetics and Adsorption Isotherm Studiesmentioning

confidence: 99%