Removal of various anionic dyes using sodium alginate/poly(N-vinyl-2-pyrrolidone) blend hydrogel beads

In this study, novel blend hydrogel beads were prepared for the use in removal of anionic textile dyes due to their hazardous impact to nature. Sodium alginate and sodium alginate/poly( N -vinyl-2-pyrrolidone) beads were prepared by gelation method into calcium chloride solution. Prepared blend bead...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2015-07, Vol.72 (7), p.1735-1752
Main Authors: İnal, Murat, Erduran, Nuran
Format: Article
Language:English
Subjects:
Acids
Adsorbents
Adsorption
Calcium chloride
Characterization and Evaluation of Materials
Chemicals
Chemistry
Chemistry and Materials Science
Chloride
Complex Fluids and Microfluidics
Dyes
Environmental impact
Equilibrium
Exothermic reactions
Hydrogels
Membrane separation
Organic Chemistry
Original Paper
Oxidation
Parameters
Physical Chemistry
Polymer Sciences
Polymers
Sodium alginate
Soft and Granular Matter
Textile industry
Usability
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Summary:In this study, novel blend hydrogel beads were prepared for the use in removal of anionic textile dyes due to their hazardous impact to nature. Sodium alginate and sodium alginate/poly( N -vinyl-2-pyrrolidone) beads were prepared by gelation method into calcium chloride solution. Prepared blend beads were characterized by TGA and FTIR analysis, and they were successfully used in adsorption of the reactive red-120 (RR), cibacron brilliant red 3B-A (CBR) and remazol brilliant blue R (RBB) in batch system. The effects of various parameters such as pH, initial dye concentration, contact time and temperature onto adsorption were investigated. The maximum adsorption capacities were found 116.8, 73.3 and 55.3 mg g −1 for RR, CBR and RBB, respectively. The adsorption of dyes was well described by pseudo-second-order kinetics and Langmuir isotherm. Thermodynamic parameters indicated that the adsorption is spontaneous and exothermic. These results have shown that blend hydrogel beads can be effectively used as adsorbent in the removal of dyes from harmful wastewaters.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-015-1367-7