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Development of a sodium alginate-based organic/inorganic superabsorbent composite hydrogel for adsorption of methylene blue.
Carbohydr Polym. 2016 Nov 20; 153:34-46.CP

Abstract

Batch adsorption experiments were carried out for the removal of methylene blue (MB) cationic dye from aqueous solution using organic/inorganic hydrogel nanocomposite of titania incorporated sodium alginate crosslinked polyacrylic acid (SA-cl-poly(AA)-TiO2). The hydrogel was prepared by graft copolymerization of acrylic acid (AA) onto sodium alginate (SA) biopolymer in the presence of a crosslinking agent, a free radical initiator and TiO2 nanoparticles. The hydrogel exhibited a high swelling capacity of 412.98g/g. The factors influencing adsorption capacity of the absorbents such as pH of the dye solutions, initial concentration of the dye, amount of absorbents, and temperature were investigated and used to propose a possible mechanism of adsorption. The adsorption process concurs with a pseudo-second-order kinetics and with Langmuir isotherm equation. A very high adsorption capacity (Qmax=2257.36 (mg/g)) and a correlation coefficient of 0.998 calculated from isotherm equations show the high efficiency of the absorbent and thus expected to be a good candidate as an absorbent for water treatment.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Thakur S
Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa.
Pandey S
Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa.
Arotiba OA
Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa; Centre for Nanomaterials Science Research, University of Johannesburg, South Africa. Electronic address: oarotiba@uj.ac.za.

MeSH

Acrylic ResinsAdsorptionAlginatesColoring AgentsGlucuronic AcidHexuronic AcidsHydrogel, Polyethylene Glycol DimethacrylateHydrogen-Ion ConcentrationKineticsMethylene BlueNanocompositesThermodynamicsTitaniumWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27561469

Citation

Thakur, Sourbh, et al. "Development of a Sodium Alginate-based Organic/inorganic Superabsorbent Composite Hydrogel for Adsorption of Methylene Blue." Carbohydrate Polymers, vol. 153, 2016, pp. 34-46.
Thakur S, Pandey S, Arotiba OA. Development of a sodium alginate-based organic/inorganic superabsorbent composite hydrogel for adsorption of methylene blue. Carbohydr Polym. 2016;153:34-46.
Thakur, S., Pandey, S., & Arotiba, O. A. (2016). Development of a sodium alginate-based organic/inorganic superabsorbent composite hydrogel for adsorption of methylene blue. Carbohydrate Polymers, 153, 34-46. https://doi.org/10.1016/j.carbpol.2016.06.104
Thakur S, Pandey S, Arotiba OA. Development of a Sodium Alginate-based Organic/inorganic Superabsorbent Composite Hydrogel for Adsorption of Methylene Blue. Carbohydr Polym. 2016 Nov 20;153:34-46. PubMed PMID: 27561469.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Development of a sodium alginate-based organic/inorganic superabsorbent composite hydrogel for adsorption of methylene blue. AU - Thakur,Sourbh, AU - Pandey,Sadanand, AU - Arotiba,Omotayo A, Y1 - 2016/06/29/ PY - 2016/03/15/received PY - 2016/06/26/revised PY - 2016/06/27/accepted PY - 2016/8/27/entrez PY - 2016/8/27/pubmed PY - 2018/2/8/medline KW - Acrylic acid KW - Adsorption KW - Methylene blue KW - O/I hydrogel nanocomposite KW - Sodium alginate KW - Water pollution SP - 34 EP - 46 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 153 N2 - Batch adsorption experiments were carried out for the removal of methylene blue (MB) cationic dye from aqueous solution using organic/inorganic hydrogel nanocomposite of titania incorporated sodium alginate crosslinked polyacrylic acid (SA-cl-poly(AA)-TiO2). The hydrogel was prepared by graft copolymerization of acrylic acid (AA) onto sodium alginate (SA) biopolymer in the presence of a crosslinking agent, a free radical initiator and TiO2 nanoparticles. The hydrogel exhibited a high swelling capacity of 412.98g/g. The factors influencing adsorption capacity of the absorbents such as pH of the dye solutions, initial concentration of the dye, amount of absorbents, and temperature were investigated and used to propose a possible mechanism of adsorption. The adsorption process concurs with a pseudo-second-order kinetics and with Langmuir isotherm equation. A very high adsorption capacity (Qmax=2257.36 (mg/g)) and a correlation coefficient of 0.998 calculated from isotherm equations show the high efficiency of the absorbent and thus expected to be a good candidate as an absorbent for water treatment. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/27561469/Development_of_a_sodium_alginate_based_organic/inorganic_superabsorbent_composite_hydrogel_for_adsorption_of_methylene_blue_ DB - PRIME DP - Unbound Medicine ER -