Design of tropinium-functionalized anion exchange membranes for acid recovery via diffusion dialysis process
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Author
Khan, Muhammad Imran
Shanableh, Abdallah
Manzoor, Suryyia
Fernandez Garcia, Javier
Osman, Sameh M.
Luque, Rafael Geraldo
Other authors
Universitat Ramon Llull. IQS
Publication date
2023-07-15ISSN
0013-9351
Abstract
Diffusion dialysis (DD) process utilizing anion exchange membranes (AEMs) is an environmentally-friendly and energy-efficient technology. From acidic wastewater, DD is needed for acid recovery. This research reports the development of a series of dense tropinium-functionalized AEMs via solution casting method. Fourier Infrared transform (FTIR) spectroscopy verified the successful preparation of AEMs. The developed AEMs exhibited a dense morphology, featuring 0.98–2.42 mmol/g of ion exchange capacity (IEC), 30–81% of water uptake (WR) and 7–32% of linear swelling ratio (LSR). They displayed exceptional mechanical, thermal and chemical stability and were employed for acid waste treatment from HCl/FeCl2 mixtures via DD process. AEMs possessed 20 to 59 (10−3 m/h) and 166 to 362 of acid diffusion dialysis coefficient (UH+) and separation factor (S) respectively at 25 °C. Compared to DF-120 commercial membrane (UH+ = 0.004 m/h, S = 24.3), their DD efficiency was improved under identical experimental conditions.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
5 - Natural Sciences
Keywords
Tropine
Diffusion dialysis
AEMs
Water uptake
BPPO
Pages
32 p.
Publisher
Elsevier
Is part of
Environmental Research
This item appears in the following Collection(s)
Rights
© Elsevier
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/