Green synthesis of recyclable iron oxide nanoparticles using Spirulina platensis microalgae for adsorptive removal of cationic and anionic dyes

Shalaby, Shymaa; Madkour, Fedekar F.; El-Kassas, Hala Y.; Mohamed, Adel; Elgarahy, Ahmed M.

doi:10.1007/s11356-021-15544-4

Cited by 80 publications

(27 citation statements)

References 76 publications

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“…. It can be summarized that as prepared adsorbent definitely exhibited superior CV, MB and MO dyes separation efficiencies over the previously reported adsorbents [24,51].…”

Section: Adsorption Isothermmentioning

confidence: 70%

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Optimization approach for adsorptive removal cationic and anionic dyes using magnetic nanoparticles alginate beads (SP-IONPs-ALG): characterization, isotherm and kinetic modelling

Shalaby

El-Kassas

Mohamed

et al. 2021

Alfarama Journal of Basic & Applied Sciences

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Organic dyes are major elements in wastewater effluents, caused serious environmental damage and human health dangers for that we use of factorial design software to evaluate efficiently factors influencing the adsorption capacity of iron oxide nanoparticles alginate beads (SP-IONPs-ALG) to remove crystal violet (CV), methylene blue (MB) and methyl orange (MO) from aqueous solution. The current work included prepared SP-IONPs-ALG by using green synthesized iron oxide nanoparticles (IONPs) using Spirulina platensis, then coated by alginate. SP-IONPs-ALG characterized by using EDX and SEM then used it as adsorbent for uptake CV, MB and MO from aqueous solution. A 2 4 (CCD) based on single-factor experiments and a four-variables, pH (x 1 ), interaction time (x 2 ), dyes conc. (x 3 ) and sorbent dosage (x 4 ) used to evaluate efficiency of SP-IONPs-ALG for adsorption of CV, MB and MO from aqueous solution. The outlined results inferred that pH, contact time and adsorbent dosage had positive effect in dyes remove with high removal percentage for CV, MB and MO (93.46%, 96.47% and 94.4%; respectively). Freundlich model was fitting for description adsorption of CV & MB with maximum adsorption capacity (Q max ) 344.82 mg g -1 , 416.6 mg g -1 respectively but Langmuir isotherm model more fit to describe the experimental data for representing the adsorption process of MO with maximum adsorption capacity 370.3 mg g -1 . The kinetic model fitted well with a pseudo second order rate equation. Furthermore, the reusability of SP-IONPs-ALG was successfully achieved by using HCl and NaOH for (CV & MB) and MO, respectively. Keywords Iron, nanoparticles, Spirulina platensis, alginate beads, crystal violet and dyes removal.

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“…. It can be summarized that as prepared adsorbent definitely exhibited superior CV, MB and MO dyes separation efficiencies over the previously reported adsorbents [24,51].…”

Section: Adsorption Isothermmentioning

confidence: 70%

“…In the current work was used the green biosynthesized magnetic nanoparticles using Spirulina platensis (SP-IONPs) [24]. All chemicals were purchased from Merck (Germany).…”

Section: Methodsmentioning

confidence: 99%

Optimization approach for adsorptive removal cationic and anionic dyes using magnetic nanoparticles alginate beads (SP-IONPs-ALG): characterization, isotherm and kinetic modelling

Shalaby

El-Kassas

Mohamed

et al. 2021

Alfarama Journal of Basic & Applied Sciences

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“…One of the important stages of the photocatalytic processes is reactant adsorption on the catalyst surface. Hence adsorption tests in darkness of the MB on the M(1/2)-S(1/2) samples were carried out while adsorption efficiency was calculated [ 9 , 65 ] and illustrated along with residual MB concentration in Figure 7 . The latter data are spectroscopically derived from the absorbance band at 665 nm of the MB solution in the presence of M1, M2 powders and the corresponding core-shell nanoparticles after 120 min in darkness ( Figure S1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Thus, physical interaction of active centers of an adsorbent and adsorbate is well described by a pseudo-first-order (PFO) model of kinetics while the pseudo-second-order (PSO) kinetics refers to the chemisorbed adsorbate, e.g., surface-interaction kinetics models. A third model developed for aqueous solutions–porous solid systems [ 65 ] assumes instantaneous dye-adsorbent interaction relative to intraparticle diffusion (ID) and hence, kinetics is ruled by diffusion. A Weber–Morris equation is used to obtain the duration of diffusion steps and if the absorption process is controlled by diffusion [ 65 ].…”

Section: Resultsmentioning

confidence: 99%

Magnetic Core-Shell Iron Oxides-Based Nanophotocatalysts and Nanoadsorbents for Multifunctional Thin Films

et al. 2022

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In recent years, iron oxides-based nanostructured composite materials are of particular interest for the preparation of multifunctional thin films and membranes to be used in sustainable magnetic field adsorption and photocatalysis processes, intelligent coatings, and packing or bio-medical applications. In this paper, superparamagnetic iron oxide (core)-silica (shell) nanoparticles suitable for thin films and membrane functionalization were obtained by co-precipitation and ultrasonic-assisted sol-gel methods. The comparative/combined effect of the magnetic core co-precipitation temperature (80 and 95 °C) and ZnO-doping of the silica shell on the photocatalytic and nano-sorption properties of the resulted composite nanoparticles were investigated by ultraviolet-visible (UV-VIS) spectroscopy monitoring the discoloration of methylene blue (MB) solution under ultraviolet (UV) irradiation and darkness, respectively. The morphology, structure, textural, and magnetic parameters of the investigated powders were evidenced by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, Brunauer–Emmett–Teller (BET) measurements, and saturation magnetization (vibrating sample magnetometry, VSM). The intraparticle diffusion model controlled the MB adsorption. The pseudo- and second-order kinetics described the MB photodegradation. When using SiO2-shell functionalized nanoparticles, the adsorption and photodegradation constant rates are three–four times higher than for using starting core iron oxide nanoparticles. The obtained magnetic nanoparticles (MNPs) were tested for films deposition.

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“…Although magnetic iron oxides are naturally occurring, we can control particle size and achieve better purity by synthesizing them in the laboratory via various routes, such as co-precipitation [ 14 ], hydrothermal [ 15 ], solvothermal [ 16 ], thermal decomposition [ 17 ], microemulsion [ 18 ], electrochemical [ 19 ], and microwave-assisted [ 20 ] methods, and greener synthesis methods using biogenic materials [ 21 , 22 ]. Functionalized magnetic particles, or magnetic composites, have been developed or modified using these methods.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods

et al. 2022

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The remediation of water streams, polluted by various substances, is important for realizing a sustainable future. Magnetic adsorbents are promising materials for wastewater treatment. Although numerous techniques have been developed for the preparation of magnetic adsorbents, with effective adsorption performance, reviews that focus on the synthesis methods of magnetic adsorbents for wastewater treatment and their material structures have not been reported. In this review, advancements in the synthesis methods of magnetic adsorbents for the removal of substances from water streams has been comprehensively summarized and discussed. Generally, the synthesis methods are categorized into five groups, as follows: direct use of magnetic particles as adsorbents, attachment of pre-prepared adsorbents and pre-prepared magnetic particles, synthesis of magnetic particles on pre-prepared adsorbents, synthesis of adsorbents on preprepared magnetic particles, and co-synthesis of adsorbents and magnetic particles. The main improvements in the advanced methods involved making the conventional synthesis a less energy intensive, more efficient, and simpler process, while maintaining or increasing the adsorption performance. The key challenges, such as the enhancement of the adsorption performance of materials and the design of sophisticated material structures, are discussed as well.

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Green synthesis of recyclable iron oxide nanoparticles using Spirulina platensis microalgae for adsorptive removal of cationic and anionic dyes

Cited by 80 publications

References 76 publications

Optimization approach for adsorptive removal cationic and anionic dyes using magnetic nanoparticles alginate beads (SP-IONPs-ALG): characterization, isotherm and kinetic modelling

Optimization approach for adsorptive removal cationic and anionic dyes using magnetic nanoparticles alginate beads (SP-IONPs-ALG): characterization, isotherm and kinetic modelling

Magnetic Core-Shell Iron Oxides-Based Nanophotocatalysts and Nanoadsorbents for Multifunctional Thin Films

Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods

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