Synthesis of DMEA-Grafted Anion Exchange Membrane for Adsorptive Discharge of Methyl Orange from Wastewaters

Abstract

This manuscript describes the synthesis of dimethylethanolamine (DMEA)-grafted anion exchange membrane (AEM) by incorporating dimethylethanolamine as ion-exchange content into the polymer matrix via the solution casting method. The synthesis of the DMEA-grafted AEM was demonstrated by Fourier transform infrared (FTIR) spectroscopy. The prepared DMEA-grafted AEM exhibited higher thermal stability, homogeneous morphology, water uptake (WR) of 115%, and an ion exchange capacity (IEC) of 2.70 meq/g. It was used for the adsorptive removal of methyl orange (MO) from an aqueous solution via batch processing. The effect of several operating factors, including contact time, membrane dosage, initial concentration of aqueous dye solution, and temperature on the percentage discharge of MO and adsorption capacity, was evaluated. Experimental data for adsorption of MO onto the DMEA-grafted AEM was analyzed with two parameter and three parameter nonlinear adsorption isotherm models but fitted best using a nonlinear Freundlich isotherm. Adsorption kinetics were studied by using several models, and attained results showed that experimental data fitted well to pseudo-second-order kinetics. A thermodynamic study showed that adsorption of MO onto the prepared DMEA-grafted AEM was an endothermic process. Moreover, it was a feasible and spontaneous process.

SPEEK and SPPO Blended Membranes for Proton Exchange Membrane Fuel Cells

“…Solution casting method was used to fabricate the SPEEK/SPPO blended membranes as reported previously [ 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. In a typical procedure, we got homogeneous solution of SPEEK by dissolving its calculated amount into 20 mL of N-Methyl-2-pyrrolidone (NMP).…”

“…Wet weight of these membranes was then measured. Water uptake ability was determined by employing the following relationship [ 38 , 46 , 47 ]: where W WET (g) and W DRY (g) are the weights of wet and dry membranes, respectively.…”

Innovative BPPO Anion Exchange Membranes Formulation Using Diffusion Dialysis-Enhanced Acid Regeneration System

“…In this work, the solution casting method was utilized for the synthesis of BPPO-based anion exchange membranes as reported in our previous research [ 35 , 43 , 44 , 45 , 46 , 47 ]. At first, 7% (wt %) solution was formed by dissolving 0.7 g (2.6 mmol) of BPPO into N-methyl-2-pyrrolidone (NMP) solvent.…”

“…In this work, the solution casting method was utilized for the synthesis of BPPObased anion exchange membranes as reported in our previous research [35,[43][44][45][46][47]. At first, In this paper, the formulation of a sequence of homogeneous anion exchange membranes based on BPPO with varying physico-chemical characteristics has been revealed by altering the amount of triphenylphosphine (shown in Figure 3) through the use of the solution casting method into the polymer matrix.…”

Ion-Exchange Membranes and Processes (Volume II)

“…Khan et al [2] reported on the synthesis of a dimethylethanolamine-grafted anionexchange membrane by incorporating dimethylethanolamine as the ion-exchange content into the polymer matrix via the solution-casting method. This membrane exhibited a homogeneous morphology, water uptake of 115%, an ion-exchange capacity of 2.70 meq/g, and high thermal stability.…”