Adsorption of Methylene Blue from Aqueous Solution Using Locust Bean Gum graft Copolymer-bentonite Composite

Sirajo Abubakar Zauro *

Department of Post-Graduate Studies and Research in Chemistry, Mangalore University, Mangalagangothri, Karnataka, India AND Department of Pure and Applied Chemistry, Usmanu Danfodiyo University, Sokoto, Nigeria

Vishalakshi Badalamoole

Department of Post-Graduate Studies and Research in Chemistry, Mangalore University, Mangalagangothri, Karnataka, India

Haruna Shehu Ahmed

Nigeria Defence Academy, Kaduna, Nigeria

*Author to whom correspondence should be addressed.


Abstract

A graft copolymer gel composite made up of locust bean gum (LBG), diallyldimethylammonium chloride (DADMAC), 2-acrylamido-2- methyl-1-propane sulfonic acid (AMPS) and bentonite (BNT) was prepared using methylenebisacrylamide (MBA) as crosslinker via microwave irradiation and characterised using FTIR, FESEM/EDS and XRD techniques. The graft ted copolymer composite was evaluated for its adsorption towards methylene blue (MB) dye. The LBG-g-poly (DADMAC-co-AMPS)/BNT showed a maximum adsorption of 70.89 mg/g compared to 65.09 mg/g showed by LBG-g-poly (DADMAC-co-AMPS). The adsorption data were subjected to two different isotherm models namely; Freundlich and Langmuir and were observed to be explained best by the Freundlich model. The adsorption of MB on the graft copolymer gel and the composite is observed to be a second-order kinetic process.

 

Keywords: Adsorption, bentonite, diallyldimethylammonium chloride, methylene blue, locust bean gum, 2-acrylamido-2-methyl-1-propane sulfonic acid


How to Cite

Abubakar Zauro, S., Badalamoole, V., & Shehu Ahmed, H. (2018). Adsorption of Methylene Blue from Aqueous Solution Using Locust Bean Gum graft Copolymer-bentonite Composite. Asian Journal of Physical and Chemical Sciences, 6(3), 1–14. https://doi.org/10.9734/AJOPACS/2018/43892