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Functionalized Magnetic Microparticles for Fast and Efficient Removal of Textile Dyes from Aqueous Solution
- Source :
- Water, Air, & Soil Pollution. 225
- Publication Year :
- 2014
- Publisher :
- Springer Science and Business Media LLC, 2014.
-
Abstract
- The use of magnetic micro- and nanoparticles for the removal of pollutants from wastewater is gaining increasing attention. Here, amine-functionalized magnetic microparticles (AFMMs) and carboxylic-functionalized magnetic microparticles (CFMMs) were synthesized by modifying the surface of Fe3O4 with amino and carboxyl groups for fast and efficient removal of textile dyes from aqueous solution. The functionalized magnetic microparticles were characterized by TEM, SEM, FTIR, and VSM. The adsorption experiments were carried out by varying the regulating parameters like solution pH and adsorbent dosage and analyzed in terms of kinetic and isotherm models. It was demonstrated that simple electrostatic interactions between functionalized magnetic microparticles and adsorbates played a dominating role in the adsorption of textile dyes. The positively charged AFMMs adsorbed the negatively charged dyes vat blue (VB) and direct violet (DV) at pH 6 with the maximum removal percentages of 95.72 and 97.29 %, respectively. The maximum removal percentages of cationic dyes methylene blue (MB) and azure A chloride (AA) on the negatively charged CFMMs were 92.28 and 92.22 % at pH 11, respectively. Moreover, the adsorbed dyes could be desorbed completely from the surface of CFMMs at a lower pH, and AFMMs also allowed rapid removal of VB and DV in different water samples. All the results in the present work demonstrated that the functionalized magnetic microparticles as efficient, magnetically separable adsorbents are attractive for the removal of dye pollutants.
- Subjects :
- Environmental Engineering
Aqueous solution
Chemistry
Ecological Modeling
Cationic polymerization
Nanoparticle
Azure A
equipment and supplies
Pollution
Chloride
chemistry.chemical_compound
Adsorption
Chemical engineering
medicine
Environmental Chemistry
Organic chemistry
Fourier transform infrared spectroscopy
human activities
Methylene blue
Water Science and Technology
medicine.drug
Subjects
Details
- ISSN :
- 15732932 and 00496979
- Volume :
- 225
- Database :
- OpenAIRE
- Journal :
- Water, Air, & Soil Pollution
- Accession number :
- edsair.doi...........284ef571cc4559358215196a63a41ddc