Preparation and characterization of sulfonated polystyrene/magnetite nanocomposites for organic dye adsorption

Al-Sabagh, A.M.; Moustafa, Y. M.; Hamdy, A.; Killa, H. M.; Ghanem, Rania T. M.; Morsi, Rania E.

doi:10.1016/j.ejpe.2017.07.004

Cited by 54 publications

(32 citation statements)

References 34 publications

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“…The Freundlich model states that the sorbent surfaces are heterogeneous and possess various binding energies. Figure 8 shows Freundlich adsorption isotherm, the values of 1/n obtained from the slope and are observed to be more than unity, as shown in Table 1, which reveals the cooperative adsorption [8,23]. Langmuir isotherm gives higher R 2 values for adsorption of both metals than that obtained from Freundlich isotherm as listed in Table 1 indicating that metal ions are adsorbed as monolayer on the surface of M-AlgNPs.…”

Section: Adsorption Studiesmentioning

confidence: 85%

“…The magnetic polymer composite can be prepared via different methods; the most basic one is the independent preparation for the magnetic nanoparticles and polymer materials and after that blending them physically or chemically. Another technique to get the magnetic polymer composite depends on in situ precipitation of magnetic material within the polymer, where the magnetic particles are encompassed by a hydrophilic polymer shell [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Magnetite-Alginate Nanoparticles for Enhancement of Nickel and Cobalt Ion Adsorption from Wastewater

El-Shamy

El-Azabawy

2019

Journal of Nanomaterials

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Superparamagnetic magnetite-alginate nanoparticles (M-AlgNPs) were synthesized utilizing a coprecipitation method. Then, the prepared M-AlgNPs were characterized via Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction spectroscopy (XRD) to affirm the formation and the crystallinity of this composite. In addition, the surface morphology of the prepared nanoparticles was inspected by transmission electron microscopy (TEM) which revealed well-dispersed nanoparticles of Fe 3 O 4 into alginate. The adsorption characteristics of the synthesized nanoparticles for removing Ni +2 and Co +2 from wastewater were evaluated via atomic absorption measurements (AAS). The elimination efficiency of the M-AlgNPs was detected at pH = 7 in 100 ppm (initial concentration) of Ni +2 and Co +2 , separately. The M-AlgNPs provided the maximum equilibrium uptake percentage for Ni +2 and Co +2 of 97.88 and 95.01%, respectively. The adsorption of Ni +2 and Co +2 onto the M-AlgNP surface was found to fit the Langmuir model with R 2 values higher than that obtained from the Freundlich model for both metal ions. Moreover, R L "separating factor" for the adsorption process was assessed and found to be less than unity; this expresses the higher ability of the investigated metal ions to be adsorbed onto the M-AlgNP surface. The adsorption method was discovered to be pH-dependent and well-suited to the isothermal equations of Langmuir and Freundlich. For regeneration studies, M-AlgNPs have been investigated and results confirmed that it could be reused with effective sorption capacity over three cycles.

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Section: Adsorption Studiesmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Magnetite-Alginate Nanoparticles for Enhancement of Nickel and Cobalt Ion Adsorption from Wastewater

El-Shamy

El-Azabawy

2019

Journal of Nanomaterials

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“…Some of the most relevant applications include (but are not limited to): magnetic recording, (photo) catalysis, pigments, ferrofluids, contrast agent for magnetic resonance imaging, drug delivery, adsorption support, anti‐tumoral agent and bioseparation . Although magnetite has been used as absorbent material for fluoride removal, and for other applications, usually it is found as part of composites . Magnetite composites have been used in biomedical applications, catalysis, removal of heavy metals, pesticides, and organic compounds, and radioactive species …”

Section: Introductionmentioning

confidence: 99%

Magnetic sugarcane bagasse composite for atrazine and fluoride removal

Helen

Blanco-Flores

López-Téllez

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: The present investigation focuses on the synthesis and application of a magnetic adsorbent material formed by the agro-industrial waste sugarcane bagasse (SCB). Its application in the removal of fluoride and atrazine demonstrates its properties as a potential adsorbent material for the treatment of contaminated wastewater. RESULTS:The synthesis method proved to be simple and reproducible. The presence and distribution of magnetite and fluoride on the surface of the material were studied by characterization techniques (SEM, EDX, FTIR-ATR). Several specific functional groups were identified which may interact with atrazine and fluoride molecules in the adsorption process. Kinetic results indicated that second-and pseudo-second-order model fitted better for the fluoride and atrazine adsorption processes, respectively. The adsorption processes took place by chemisorption onto heterogeneous surfaces. Isotherm data fitted better to the Langmuir-Freundlich model in both systems; therefore, the process took place by a combination of mechanisms. Cellulose and lignin from sugarcane bagasse contribute in the adsorption process, while magnetite not only improve performance of composite for the removal of the chemical species tested, but also achieve a simple separation process via magnetic interactions' with a common magnet. The adsorption capacities of the composites were 0.5036 mg g −1 for fluoride and 40.11 mg g −1 for atrazine. CONCLUSION: The synthesis of the magnetic composite is simple and generates a material that is easy to manipulate and isolate after the process. The affinity of the composite with atrazine is greater than with fluoride; however, the composite can be used in systems with low concentration.

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“…When the team worked with a local tilapia collagen peptide producer to study how to reduce the production cost, we decided to use immobilized enzyme technology to save the cost of the enzyme. We found that sulfonated polystyrene (SPS) nanospheres are a good immobilized material with simple processing, low cost, good corrosion resistance, small pore size, large specific surface area, and good biocompatibility [15], but also there are few studies on SPS nanospheres at present, and especially their application in food industry is very rare.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Alkaline Collagenase from Bacillus subtilis onto Sulfonated Polystyrene Nanospheres for Hydrolysis of Tilapia Collagen

Zhang

Yang

Xiao

et al. 2019

Journal of Food Quality

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The structure of an alkaline protease from Bacillus subtilis used by a tilapia collagen peptide manufacturer was analyzed, and the technology of the enzyme immobilized by sulfonated polystyrene (SPS) nanoparticles was studied. The particle size distribution, SEM, EDS, TEM, and FT-IR spectroscopy of the carrier before and after immobilization were analyzed. The results showed that the molecular weight of the purified enzyme protein was 31.0 kDa. The amino acid sequence with a consistency of 64.04% and one three-dimensional structure simulation diagram of the purified enzyme protein were obtained by LC-MS-MS, which suggested that the protein might belong to subtilisin. The optimal immobilization conditions were as follows: the volume ratio of the immobilization carrier to the enzyme was 3 : 50 (mL : mL), the immobilized temperature was 25°C, and the system pH was 4.5. Under this condition, the immobilization ratio of collagenase was 73.48%, the specific activity was 274.05 U/μg, and the specific activity of the immobilized enzyme was about 53.74% that of the free enzyme. The average particle size of SPS nanospheres was 155.1 nm. The characterization results of SEM, EDS, TEM, and FT-IR spectroscopy showed that the collagenase was successfully immobilized onto SPS nanospheres. The experimental results also showed that the collagenase could be immobilized effectively under the optimal conditions by using SPS nanospheres, and the operation process was simple, feasible, and of low cost with good prospect of industrial application.

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Preparation and characterization of sulfonated polystyrene/magnetite nanocomposites for organic dye adsorption

Cited by 54 publications

References 34 publications

Synthesis and Characterization of Magnetite-Alginate Nanoparticles for Enhancement of Nickel and Cobalt Ion Adsorption from Wastewater

Synthesis and Characterization of Magnetite-Alginate Nanoparticles for Enhancement of Nickel and Cobalt Ion Adsorption from Wastewater

Magnetic sugarcane bagasse composite for atrazine and fluoride removal

Immobilization of Alkaline Collagenase from Bacillus subtilis onto Sulfonated Polystyrene Nanospheres for Hydrolysis of Tilapia Collagen

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