An Eco-friendly Porous Poly(imide-ether)s for the Efficient Removal of Methylene Blue: Adsorption Kinetics, Isotherm, Thermodynamics and Reuse Performances

Journal Article · Wed May 01 04:00:00 EDT 2019 · Journal of Polymers and the Environment

DOI:https://doi.org/10.1007/S10924-019-01408-Z· OSTI ID:22950344

Murugesan, Arukkani; Divakaran, M. ^[1]; Raveendran, Pranav; Nitin Nikamanth, A. B.; Thelly, Kevin J. ^[2]

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1. SSN College of Engineering, Department of Chemistry (India)
2. SSN College of Engineering, Department of Computer Science and Engineering (India)

Poly(imide-ether)s (PIEs), which is porous in nature, was synthesized using aromatic diamines and dianhydrides via the solution polycondenzation reaction. In the process, PIEs was used as an adsorbent for the removal of basic dye [Methylene blue (MB)] from the aqueous solution. The structure and the thermal stability of PIEs were characterized by FT-IR, {sup 1}H-NMR, XRD and TG analysis, and the adsorption behaviour of the PIEs was confirmed using UV/Visible, FT-IR and SEM with EDX analysis. Batch adsorption experiments were carried out and their parameters (pH 6.95), initial MB concentration (200 mg/L), adsorbent dosage (50 mg), contact time (120 min) and temperature (28 °C) were optimized. The batch adsorption experimental data of the effect of contact time, initial MB concentration and temperature were evaluated using the adsorption kinetics (Pseudo-first order, Pseudo-second order, Elovich and Intra-particle diffusion kinetic), isotherm (Langmuir, Freundlich, Redlich–Peterson and Sips isotherms) and thermodynamic models respectively. In the study, adsorption of MB onto PIEs followed Pseudo-second kinetics and found to be the best fitting model based on the obtained experimental data. The homogeneity and heterogeneity surface nature of PIEs were elucidated with two and three isotherm parameters respectively. The adsorption thermodynamic study indicates that the adsorption of MB onto PIEs was endothermic and spontaneous in nature. The adsorbed PIEs solid waste was utilized to prepare the polymer composite, and its property was characterized. Graphical Abstract: .

• OSTI ID: 22950344
• Journal Information: Journal of Polymers and the Environment, Journal Name: Journal of Polymers and the Environment Journal Issue: 5 Vol. 27; ISSN 1566-2543
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ADSORBENTS
AQUEOUS SOLUTIONS
ECOLOGICAL CONCENTRATION
FOURIER TRANSFORMATION
INFRARED SPECTRA
METHYLENE BLUE
NUCLEAR MAGNETIC RESONANCE
POLYMERS
SCANNING ELECTRON MICROSCOPY
SOLID WASTES
THERMAL GRAVIMETRIC ANALYSIS
THERMODYNAMICS
X-RAY DIFFRACTION