Adsorption of Methyl Orange from an Aqueous Solution onto a BPPO-Based Anion Exchange Membrane

Muhammad Imran Khan; Abdallah Shanableh; Noureddine Elboughdiri; Mushtaq Hussain Lashari; Suryyia Manzoor; Shabnam Shahida; Nosheen Farooq; Yassine Bouazzi; Sarra Rejeb; Zied Elleuch; Karim Kriaa; Aziz Ur Rehman

doi:10.1021/acsomega.2c03148

Adsorption of Methyl Orange from an Aqueous Solution onto a BPPO-Based Anion Exchange Membrane

ACS Omega. 2022 Jul 21;7(30):26788-26799. doi: 10.1021/acsomega.2c03148. eCollection 2022 Aug 2.

Authors

Affiliations

¹ Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah 27272, United Arab Emirates.
² Chemical Engineering Department, College of Engineering, University of Ha'il, P.O. Box 2440, Ha'il 81441, Saudi Arabia.
³ Chemical Engineering Process Department, National School of Engineers Gabes, University of Gabes, Gabes 6029, Tunisia.
⁴ Department of Zoology, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.
⁵ Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan.
⁶ Department of Chemistry, University of Poonch, Rawalakot 12350, Azad Kashmir, Pakistan.
⁷ Department of Chemistry, The Government Sadiq College Women University, Bahawalpur 63100, Pakistan.
⁸ Industrial Engineering Department, College of Engineering, University of Ha'il, P.O. Box 2440, Ha'il 81441, Saudi Arabia.
⁹ Laboratory of Metrology and Energy Systems, National Engineering School of Monastir, University of Monastir, Monastir 5000, Tunisia.
¹⁰ College of Community, University of Ha'il, P.O. Box 2440, Ha'il 81441, Saudi Arabia.
¹¹ Chemical Engineering Department, College of Engineering, Imam Mohammad Ibn Saud Islamic University (IMSIU), PO Box 5701, Riyadh 11432, Saudi Arabia.
¹² Institute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.

Abstract

In this research, the development of a novel brominated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO)-based homogeneous anion exchange membrane (AEM) via the solution casting method was reported. Fourier transform infrared spectroscopy was used to confirm the successful development of the BPPO-based AEM. The prepared AEM showed excellent thermal stability. It exhibited an ion exchange capacity of 2.66 mg/g, a water uptake (W _R) of 68%, and a linear swelling ratio of 31%. Methyl orange (MO), an anionic dye, was used as a model pollutant to evaluate the ion exchange ability of the membrane. The adsorption capacity of MO increased with the increase in contact time, membrane dosage (adsorbent), temperature, and pH while declined with the increase in initial concentration of MO in an aqueous solution and molarity of NaCl. Adsorption isotherm study showed that adsorption of MO was fitted well to the Freundlich adsorption isotherm because the value of the correlation coefficient (R ² = 0.974) was close to unity. Adsorption kinetics study showed that adsorption of MO fitted well to the pseudo-second-order kinetic model. Adsorption thermodynamics evaluation represented that adsorption of MO was an endothermic (ΔH° = 18.72 kJ/mol) and spontaneous process. The AEM presented a maximum adsorption capacity of 18 mg/g. Moreover, the regeneration of the prepared membrane confirmed its ability to be utilized for three consecutive cycles. The developed BPPO-based AEM was an outstanding candidate for adsorption of MO from an aqueous solution.