Cationic dye removal using a newer material fabricated by Taro Mucilage-g-PLA and Organobentonite clay Abubakar Hamisu Mijinyawa a , Anuradha Mishra b , Geeta Durga a,⇑ a Department of Chemistry and Biochemistry, School of Basic Sciences and Research, Sharda University, Greater Noida 201306, India b SDepartment of Applied Chemistry, School of Vocational Studies and Applied Sciences, Gautam Buddha University, Greater Noida 201312, India article info Article history: Received 29 November 2019 Accepted 26 December 2019 Available online xxxx Keywords: TM-g-PLA/O-BC composite Methylene blue Adsorption Dye-removal Pseudo second order kinetics abstract Of recently, dye removal by adsorption route receives huge attention from researchers due to the envi- ronmental concerns. In the present study, the adsorptive removal properties of a composite material fab- ricated using Taro Mucilage-g-PLA and Organobentonite clay (75/25, w/w) composite (TM-g-PLA/O-BC) was investigated. The TM-g-PLA/O-BC showed a flexible and porous surface morphology and the pres- ence of –OH, Al–O, Si–O and –C=O groups was indicated by FTIR analysis. This material was found to be capable of removing around 98% of methylene blue (MB) at basic pH under ultrasonication. The sta- tistical analysis of the data obtained for dye removal study showed a correlation coefficient, R 2 = 0.999, and the pseudo-second-order model of kinetics. Ó 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd International Conference on Science and Engineering of Materials. 1. Introduction A considerable amount of work has been undergoing for the last almost two decades to synthesize environmental friendly adsor- bents for the remediation of dye wastewater. The removal of dyes/industrial colouring agents is of great significance for most of the dyes are non-biodegradable or slowly degradable, toxic, and carcinogenic [1]. An advanced adsorption technique [1–4], is the most widely applied procedure to remove dyes from solution. Methylene blue (MB) [5] is a representative of cationic industrial and toxic dyes. Due to its toxic nature, its presence in water is a threat to the aquatic lives and for human beings [6]. The most reported adsorbents that can remove the MB dye from aqueous solution are agricultural-based materials [7], activated car- bons [8,9], raw and modified clay minerals [10,11], polysaccharide- based materials [3,12–14], etc. The removal of the MB dye by using natural materials, like the clay, polysaccharides, and derivatives, can provide a environmentally sustainable solution due to their cost- effectiveness as compared to that of activated carbons. The major aim of the present work is to fabricate Taro Mucilage- g-PLA/Organobentonite clay (75/25, w/w) composite (TM-g-PLA/O- BC) for adsorptive removal of MB from aqueous medium. The characterization tools viz. the FTIR spectroscopy and Scanning electron microscopy (SEM) have been utililized in order to study its chemical composition and surface character, respectively. 2. Experimental details 2.1. Materials In our earlier work, the detail on the synthesis of Taro Mucilage- g-polylactide (TM-g-PLA) by a ring-opening grafting procedure was reported [15]. Natural bentonite clay powder referred to as BC (pure form) – an indigenous product of mining industry in India was oven-dried at 60 °C for 24 h. The chemical, Cetyl trimethyl ammonium bromide, CTAB (CAS NO.: 57-09-0) was procured from Alfa Aesar, Private Limited Company, India. Methyl blue, MB dye (CAS NO.: 61-73-4, C.I 52015, dye content >96%) used as adsorbate was from Central Drug House Private Limited New Delhi, India and the high-grade solvent chloroform (assay 98.9%) was a product of Alfa Aesar, Pvt. India. 2.2. Methods 2.2.1. Preparation of organo-BC The Organic modification of BC was performed by mixing its suspension in water with CTAB to prepare an organo-BC. The BC powder (5.0 g) was dispersed in 50 ml distilled water followed by addition of 2000 mg/L CTAB solution [16]. It was then sonicated https://doi.org/10.1016/j.matpr.2019.12.345 2214-7853/Ó 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the 3rd International Conference on Science and Engineering of Materials. ⇑ Corresponding author. E-mail address: geeta.durga@sharda.ac.in (G. Durga). Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: A. H. Mijinyawa, A. Mishra and G. Durga, Cationic dye removal using a newer material fabricated by Taro Mucilage-g-PLA and Organobentonite clay, Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2019.12.345