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Modification of gum ghatti via grafting with acrylamide and analysis of its flocculation, adsorption, and biodegradation properties.
Mittal, Hemant; Kumar, Vaneet; Alhassan, Saeed M; Ray, Suprakas Sinha.
Afiliación
  • Mittal H; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 2533, Abu Dhabi, United Arab Emirates. Electronic address: mittal.hemant5@gmail.com.
  • Kumar V; Department of Applied Science, CT Group of Institutions Shahpur, Jalandhar, Punjab, India.
  • Alhassan SM; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 2533, Abu Dhabi, United Arab Emirates.
  • Ray SS; DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa; Department of Applied Chemistry, University of Johannesburg, Doornfontein 2028, South Africa. Electronic address: rsuprakas@csir.co.za.
Int J Biol Macromol ; 114: 283-294, 2018 Jul 15.
Article en En | MEDLINE | ID: mdl-29580994
In this work, an environmentally friendly gum ghatti-crosslinked-polyacrylamide (Gg-cl-PAAM) hydrogel was synthesized from gum ghatti (Gg) and acrylamide (AAM) using a microwave-assisted grafting technique, and tested for use in water purification applications as an adsorbent and flocculent. The Gg-cl-PAAM was characterized using SEM, FTIR, and TGA, and displayed pH responsive swelling behavior, with maximum swelling (2117%) observed in solution with neutral pH. The flocculation characteristics of Gg-cl-PAAM were tested in clay solutions as a function of pH, temperature, and the polymer mass loading, showing that the best performance is obtained at neutral pH at 40°C. The adsorption capacities of Gg-cl-PAAM for the removal different dyes such as brilliant green (BG), rhodamine B (RhB), congo red (CR), and methyl orange (MO) were tested, revealing that the adsorption of all dyes followed the Langmuir isotherm model, with qm values of 523.62mgg-1 for BG, 421.60mgg-1 for RhB, 179.09mgg-1 for CR, and 173.69mgg-1 for MO. Finally, the environmentally friendly nature of Gg-cl-PAAM was examined using the soil-burial composting method, which demonstrated 93% degradation of the Gg-cl-PAAM hydrogel within 60days.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Purificación del Agua / Acrilamida / Gomas de Plantas / Colorantes Fluorescentes Tipo de estudio: Prognostic_studies Idioma: En Revista: Int J Biol Macromol Año: 2018 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Purificación del Agua / Acrilamida / Gomas de Plantas / Colorantes Fluorescentes Tipo de estudio: Prognostic_studies Idioma: En Revista: Int J Biol Macromol Año: 2018 Tipo del documento: Article Pais de publicación: Países Bajos