Application of cress seed musilage magnetic nanocomposites for removal of methylene blue dye from water (original) (raw)
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Gum Arabic-Coated Magnetic Nanoparticles For Methylene Blue Removal
International Journal of Innovative Research in Science, Engineering and Technology, 2014
Magnetic nanoparticles (MNPs) were fabricated using the chemical co-precipitation method followed by coating the surface of magnetic Fe 3 O 4 nanoparticles with gum arabic (GA). The fabricated magnetic nanoparticles were characterised using transmission electron microscopy (TEM) which showed that the Fe 3 O 4 nanoparticles and GA-MNPs nanoparticles had a mean diameter of 33 nm, and 38 nm, respectively. Scanning electron microscopy (SEM) images showed that the MNPs modified with GA had homogeneous structure and agglomerated. The energy dispersive X-ray spectroscopy (EDAX) spectrum showed strong peaks of Fe and O. X-ray diffraction patterns (XRD) indicated that the naked magnetic nanoparticles were pure Fe 3 O 4 with a spinel structure and the covering of GA did not result in a phase change. The covering of GA on the magnetic nanoparticles was also studied by BET analysis, and Fourier transform infrared spectroscopy.Moreover, the present study reports a fast and simple method for removal and recovery of methylene blue dye (MB) from aqueous solutions by using the synthesised magnetic nanoparticles modified with gum arabic as adsorbent. The experimental results show that the adsorption process attains equilibrium within five minutes. The data fit the Langmuir isotherm equation and the maximum adsorption capacities were 8.77 mg mg-1 and 14.3 mg mg-1 for MNPs and GA-MNPs, respectively. The results indicated that the homemade magnetic nanoparticles were quite efficient for removing MB and will be a promising adsorbent for the removal of harmful dyes from wastewater.
AQUA — Water Infrastructure, Ecosystems and Society
An increasing interest in nanocomposites prepared from agricultural/industrial byproducts has been paid for environmental remediation, especially in water treatment. This study reports the facile preparation of a low-cost magnetic biocomposite of magnetic Fe3O4 nanoparticles (NPs) incorporated with biopolymers extracted from durian husk, called bp-Fe3O4 and examined in the removal of methylene blue (MB) dye. Here, Fe2O3 NPs were first recovered from red mud waste and then converted to magnetic nanostructured Fe3O4 using a one-pot process via carbon combustion. The bp-Fe3O4 inherited the characteristics of each constituent component, while showing slightly higher saturation magnetization than the bare Fe3O4 NPs (19.84 and 18.66 emu/g, respectively), allowing for easy separation from the aqueous solution using a suitable magnet. The MB adsorption on bp-Fe3O4 reached an equilibrium state within 60 min reaction and achieved >90% of removal (at 50 mg/L MB) at an optimal pH range of 6–...
Journal of the Mexican chemical society, 2019
This study was focused on the adsorption of methylene blue (MB) as a cationic dye on magnetite nanoparticles loaded with coffee (MNLC) and magnetite nanoparticles loaded with peanut husk (MNLPH) as naturally cheap sources of adsorbent. Coffee and Peanut husk were magnetically modified by contact with water-based magnetic fluid. These new type of magnetically natural materials can be easily separated by means of magnetic separators. They were characterized with Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD) and scanning electron microscopy (SEM) instruments. Different parameters affecting MB removal efficiency such as contact time, pH of solution and amount of adsorbents were studied and optimized. Dye adsorption process was studied from both kinetic and equilibrium point. The studies of MB sorption kinetic showed rapid dynamic sorption with second-order kinetic model, suggesting chemisorption mechanism with R 2 = 0.9988, qeq=10.28 mg g-1 and R 2 =0.9967, qeq=128.20 mg g-1 , respectively. Equilibrium data were fitted well to the Langmuir isotherm more than Freundlich and Temkin isotherm. The modified adsorbents showed MB removal with 88.49 and 74.62 mg g-1 sorption capacity for MNLC and MNLPH, respectively. This study showed a simple, efficient and reliable method for removal of MB from aqueous solutions with MNLC and MNLPH as efficient adsorbents.
Removal of Acid Blue 342 from Aqueous Solution by Fe2O3/Fe3O4 Magnetic Nanocomposite
Benha Journal of Applied Sciences, 2021
The synthesis, characterization and capacity studies of fabricated magnetic Fe 2 O 3 /Fe 3 O 4 nanocomposites capable of adsorbing with Acid Blue 342 dye (AB) were reported. The product was characterized by FT-IR, XRD, SEM and TEM techniques. The crystallite size calculated using the Scherrer formula for the fabricated nanocomposite was about 22.38 nm. The results of SEM analysis show rough surfaces and many visible fluffy mesoporous. The adsorption properties of the Fe 2 O 3 /Fe 3 O 4 nanocomposites for the removal of Acid Blue 342 dye (AB) were examined. By using a batch method, various parameters affecting the adsorption properties were studied. The results revealed that Fe 2 O 3 /Fe 3 O 4 nanostructure gave high adsorption capacity equal 39.45 mg/g. The equilibrium isotherm, kinetics parameters of the adsorption process were also calculated. The study indicated that the pseudo second-order adsorption mechanism is predominate and that the overall rate of the AB dye adsorption process was controlled by the chemisorption process.
2022
In the present study, a new magnetic nanocomposite was synthesized with the capability to remove the dye pollutant from aqueous solutions. In the first step, magnetite nanoparticle was synthesized via the coprecipitation method and then, they were modified with 3-aminopropyltriethoxysilane (APTES) and acryloyl chloride, respectively. Then itaconic acid (IA) and 2-hydroxyethyl methacrylate were grafted on the modified nanoparticles via in situ copolymerization to prepare the final nanocomposite. The prepared nanocomposite was used as the adsorbent for the removal of the methylene blue as a typical dye from aqueous solutions. According to the obtained results, the nanocomposite showed high adsorption efficiency toward the methylene blue dye within 15 minutes and the other optimized values are pH=11, adsorbent dosage=30 mg, and initial concentration of the dye=20 ppm. Different parameters such as pH, amount of adsorbent, initial concentration of the dye, and contact time were investigated and optimized. Moreover, the synthesized nanocomposite was characterized by different methods such as FT-IR, VSM, TGA, XRD, and FE-SEM analyses. The result of VSM shows that the obtained nanocomposite has a magnetic property, which eases its separation and its amount, which is 31.72 emu.g-1 .
Vantage: Journal of Thematic Analysis
Chitosan is studied as a natural polysaccharide which has a remarkable unique combination of chemical, physical and mechanical properties. Chitosan, an amino polysaccharide obtained from deacetylation of chitin, is a natural polymer that has a plethora of applications in various fields including water purification, drug designing, cosmetics, food and packaging etc. Being a natural polymer it has less residual impact on the environment, and hence serves as a potential alternative to the chemically hazardous precursors. The present work focusses on deploying the useful chemical properties of chitosan to design a solution for removal of organic dye such as methylene blue and heavy metals from industrial waste water. In order to achieve this, a composite system consisting of chitosan, magnetic ferrite (Fe3O4) nanoparticles and graphene oxide was synthesized to obtain the synergistic combination of the desired properties. The ferrite nanoparticles were synthesized by alkalisation of Fe +2 and Fe +3 species using co-precipitation method in the presence of a suitable surfactant. The CFG (chitosan/Fe3O4 nanoparticles/graphene oxide) nanocomposite was synthesized through a facile chemical route. The characterization of the synthesized composite was carried out using X-ray diffraction (XRD), Vibrating Sample Magnetometer (VSM) and microstructural analysis. Adsorption ability of CFG nanocomposite for methylene blue, potassium dichromate and cobaltous chloride was evaluated by using UV-Visible spectroscopy studies.