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Removal of diethyl phthalate from aqueous phase using magnetic poly(EGDMA-VP) beads
- Source :
- Journal of hazardous materials.
- Publication Year :
- 2011
-
Abstract
- The barium hexaferrite (BaFe 12 O 19 ) containing magnetic poly(ethylene glycol dimethacrylate–vinyl pyridine), (mag-poly(EGDMA–VP)) beads (average diameter = 53–212 μm) were synthesized and characterized. Their use as an adsorbent in the removal of diethyl phthalate (DEP) from an aqueous solution was investigated. The mag-poly(EGDMA–VP) beads were prepared by copolymerizing of 4-vinyl pyridine (VP) with ethylene glycol dimethacrylate (EGDMA). The mag-poly(EGDMA–VP) beads were characterized by N 2 adsorption/desorption isotherms (BET), vibrating sample magnetometer (VSM), X-ray powder diffraction (XRD), elemental analysis, scanning electron microscope (SEM) and swelling studies. At a fixed solid/solution ratio, the various factors affecting the adsorption of DEP from aqueous solutions such as pH, initial concentration, contact time and temperature were analyzed. The maximum DEP adsorption capacity of the mag-poly(EGDMA–VP) beads was determined as 98.9 mg/g at pH 3.0, 25 °C. All the isotherm data can be fitted with both the Langmuir and the Dubinin-Radushkevich isotherm models. The pseudo first-order, pseudo-second-order, Ritch-second-order and intraparticle diffusion models were used to describe the adsorption kinetics. The thermodynamic parameters obtained indicated the exothermic nature of the adsorption. The DEP adsorption capacity did not change after 10 batch successive reactions, demonstrating the usefulness of the magnetic beads in applications.
- Subjects :
- Waste component removal
Langmuir
Thermodynamic parameter
Xrd
Pyridines
Ethylene glycol dimethacrylate
Magnetic nanoparticle
Barium Compounds
Metal Nanoparticles
Average diameter
Polymerization
Polyethylene Glycols
Organic pollutant
Waste Management and Disposal
Dyes
pH
Contact time
Esters
Adsorption/desorption
Hydrogen-Ion Concentration
Pollution
Barium
Methacrylates
Aqueous phase
4-vinyl pyridine
Environmental Engineering
Equilibrium
Initial concentration
Phthalic Acids
Cu(II)
Isotherms
Article
Intraparticle diffusion models
Adsorption
Vibrating sample magnetometer
Chromatography
X ray powder diffraction
Magnetic Phenomena
Aqueous two-phase system
technology, industry, and agriculture
Water
Ferrite
Phthalic Acid Ester
Di-N-Octyl Phthalate
Mono-(2-Ethylhexyl)Phthalate
Barium hexaferrite
Poly(ethylene glycol dimethacrylate vinylpyridine)
chemistry
Concentration (parameters)
Unclassified drug
Health, Toxicology and Mutagenesis
Barium derivative
chemistry.chemical_compound
Synthesis
Engineering
Adsorption kinetics
Desorption
Aqueous solution
Chemical analysis
Iron derivative
Heavy-metal ions
Magnetic beads
Solid/solution ratio
Temperature
Isotherm data
Synthesis (chemical)
Pollutant removal
Thermodynamics
Scanning electron microscopy
Dubinin-radushkevich
Ethylene glycol derivative
Activated carbon
First-order
Diethyl phthalate
Water Purification
Swelling studies
Environmental sciences & ecology
Analytic method
Environmental Chemistry
Isotherm models
Resin
Isotherm
Phthalic acid diethyl ester
Chitosan
Engineering, environmental
Adsorption capacities
X-ray diffraction
Environmental sciences
Kinetics
Barium hexaferrites
Langmuirs
Ethylene glycol
Removal
Water Pollutants, Chemical
Nuclear chemistry
Subjects
Details
- ISSN :
- 18733336
- Database :
- OpenAIRE
- Journal :
- Journal of hazardous materials
- Accession number :
- edsair.doi.dedup.....ecc2a01071fe548224327e97c060a314