MWCNT-Fe 3 O 4 as a superior adsorbent for microcystins LR removal: Investigation on the magnetic adsorption separation, artificial neural network modeling, and genetic algorithm optimization

Baziar, Mansour; Azari, Ali; Karimaei, Mostafa; Gupta, Vinod Kumar; Agarwal, Shilpi; Sharafi, Kiomars; Maroosi, Mohammad; Shariatifar, Nabi; Dobaradaran, Sina

doi:10.1016/j.molliq.2017.06.014

Cited by 62 publications

(22 citation statements)

References 47 publications

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“…Where the C e is equilibrium concentration (mg/l), q e is phenol adsorbed at equilibrium (mg/g), q 0 and b are the Langmuir constants related to the capacity and energy of adsorption, respectively [20] , [21] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data for efficiency comparison of raw pumice and manganese-modified pumice for removal phenol from aqueous environments—Application of response surface methodology

et al. 2018

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Present deadest collection was aimed to evaluate the efficiency of raw pumice (RWP) and Mn-modified pumice (MMP). Response surface methodology (RSM) based on the central composite designs (CCD) was applied to evaluate the effects of independent variables including pH, adsorbents dosage, contact time and adsorbate concentration on the response function and the best response values were predicted. The Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the adsorbents. Based on acquired data, the maximum efficiency removal of phenol was obtained 89.14% and 100% for raw and Mn-modified pumice respectively. The obtained data showed pH was effective parameter on phenol removal among the different variables. Evaluation of data using isotherms and kinetics models showed the fitted with Langmuir isotherm and pseudo second order kinetic for both adsorbents. According to obtained data was observed that modification of pumice can improve the efficiency removal of phenol to meet the effluent standards.

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data for efficiency comparison of raw pumice and manganese-modified pumice for removal phenol from aqueous environments—Application of response surface methodology

et al. 2018

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“…where KL is the Langmuir binding constant, Ce is the equilibrium concentration (mg/L), Qm and Qe are the adsorbed amount maximum and at equilibrium in mg/g, respectively. rL (dimensionless) is the separation factor defined as: rL =1/(1+KLC0) 35 For rL > 1 Adsorption is unfavorable For rL = 0…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of sodium salicylate from aqueous solution using spruce wood sawdust as an eco-friendly adsorbent

et al. 2020

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This study reports the application of Spruce wood sawdust as a low-cost and eco-friendly adsorbent for the removal of sodium salicylate from aqueous solutions. The effects of physicochemical parameters on the sodium salicylate adsorption process such as initial pH, temperature, solid/liquid ratio, initial concentration, contact time, and ionic strength were investigated. The optimum adsorption conditions were found as: equilibrium time = 3h, adsorbent dosage = 0.5 g/L, pH= 6.5, initial sodium salicylate concentration = 10 mg/L and temperature = 25°C. The kinetic study shows that the pseudo-second-order model is suitable to describe the adsorption process. The adsorption isotherm models (Langmuir, Freundlich, Temkin and generalized) were tested to understand the adsorption mechanism of sodium salicylate onto wood sawdust surface. The adsorption of sodium salicylate follows the Langmuir isotherm model. The maximum monolayer uptake capacity was found to be 99.01 mg/g. In addition, the temperature seems to have no noticeable effect on the adsorption of sodium salicylate. Finally, the thermodynamic parameters indicate that the adsorption is spontaneous (ΔG°˂ 0) and exothermic (ΔH°=-5.081 kJ/mol) in nature. Overall, Spruce wood sawdust can be used as a cost-effective and eco-friendly adsorbent for wastewater treatment applications.

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“…There are two main strategies for this purpose that one is to deposit magnetic materials on the outer surface of CNTs (CNTs@Fe 3 O 4 ), and the other is to encapsulate magnetic substances in the inner cavity of CNTs (Fe 3 O 4 @CNTs). Undoubtedly, the first deposition route is easier method to conduct, and many papers have been published about this aspect . However, for the deposition of magnetic nanoparticles on the outer surface of CNTs, the monodispersity or homogeneity of the composites is unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis of Magnetic Nanoparticles Encapsulated by Carbon Nanotube for Selective Aromatic Compound Adsorption

Zhu

Guan

et al. 2019

ChemistrySelect

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Based on the epoxidation modification of the carbon nanotubes surface, we develop a facile one‐pot synthesis of core‐shell magnetic carbon nanotubes where Fe3O4 nanoparticles are encapsulated inside the carbon nanotubes (Fe3O4@CNTs). Compared with traditional magnetic carbon nanotubes which prepared by surface deposition, the well‐designed core‐shell magnetic carbon nanotubes show higher selective adsorption for aromatic organic compounds. For those aromatic compounds containing hydrophilic groups on benzene rings such as phenols, the equilibrium adsorption capacity of the compound on the surface of Fe3O4@CNTs is almost zero. Conversely, the Fe3O4@CNTs exhibit good adsorption capacity for those aromatic compounds with electron‐withdrawing group on benzene ring such as nitro group, and the equilibrium adsorption capacity can reach 2.07 mg/g in aqueous solution. In addition, the corresponding selective adsorption mechanism is put forward through the kinetic studies. This study provides a new strategy for the water environmental treatment and the reuse of aromatic pollutants.

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MWCNT-Fe 3 O 4 as a superior adsorbent for microcystins LR removal: Investigation on the magnetic adsorption separation, artificial neural network modeling, and genetic algorithm optimization

Cited by 62 publications

References 47 publications

Data for efficiency comparison of raw pumice and manganese-modified pumice for removal phenol from aqueous environments—Application of response surface methodology

Data for efficiency comparison of raw pumice and manganese-modified pumice for removal phenol from aqueous environments—Application of response surface methodology

Removal of sodium salicylate from aqueous solution using spruce wood sawdust as an eco-friendly adsorbent

One‐Pot Synthesis of Magnetic Nanoparticles Encapsulated by Carbon Nanotube for Selective Aromatic Compound Adsorption

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