Reusability of Discarded Tubular Ceramic Membranes for CO2 Removal: A Case Study for Membrane Circularity

Elcim Karatas; Sama A. Al-Mutwalli; Mustafa N. Taher; Mohammad Mahdi A. Shirazi; Derya Y. Koseoglu-Imer

doi:10.1021/acsomega.3c02568

Reusability of Discarded Tubular Ceramic Membranes for CO₂ Removal: A Case Study for Membrane Circularity

Elcim Karatas, Sama A. Al-Mutwalli, Mustafa N. Taher, Mohammad Mahdi A. Shirazi, Derya Y. Koseoglu-Imer^*

^*Corresponding author for this work

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Discarded polymeric or ceramic membranes are currently in need of appropriate and sustainable management. In the present study, the direct reuse of discarded ceramic membranes in membrane contactor (MC) systems for CO₂ removal was investigated for the first time. The hydrophobic surface modification of the discarded ceramic membrane was done by using macromolecule additive coating. The influence of operational parameters (absorbent liquid flow rate (Q_L), feed gas flow rate (Q_g), and different NaOH concentrations) of the MC on CO₂ removal was investigated to prove the technical feasibility of reused ceramic membranes. The CO₂ absorption flux was 7.9 × 10^-4 mol/m² s at optimal conditions of 2 M NaOH, Q_L (20 mL/min), and Q_g (300 mL/min) with a removal efficiency of 98%, which lasted for 8 h. This study demonstrates a potential alternative for the reuse of discarded ceramic membranes and avoids their disposal in landfills.

Original language	English
Pages (from-to)	29225-29233
Number of pages	9
Journal	ACS Omega
Volume	8
Issue number	32
DOIs	https://doi.org/10.1021/acsomega.3c02568
Publication status	Published - 15 Aug 2023

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Published by American Chemical Society

Funding

The authors would like to thank the Innobrane Research Group for hosting the experimental work and for technical assistance.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsomega.3c02568

Cite this

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title = "Reusability of Discarded Tubular Ceramic Membranes for CO2 Removal: A Case Study for Membrane Circularity",

abstract = "Discarded polymeric or ceramic membranes are currently in need of appropriate and sustainable management. In the present study, the direct reuse of discarded ceramic membranes in membrane contactor (MC) systems for CO2 removal was investigated for the first time. The hydrophobic surface modification of the discarded ceramic membrane was done by using macromolecule additive coating. The influence of operational parameters (absorbent liquid flow rate (QL), feed gas flow rate (Qg), and different NaOH concentrations) of the MC on CO2 removal was investigated to prove the technical feasibility of reused ceramic membranes. The CO2 absorption flux was 7.9 × 10-4 mol/m2 s at optimal conditions of 2 M NaOH, QL (20 mL/min), and Qg (300 mL/min) with a removal efficiency of 98%, which lasted for 8 h. This study demonstrates a potential alternative for the reuse of discarded ceramic membranes and avoids their disposal in landfills.",

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AU - Taher, Mustafa N.

AU - Shirazi, Mohammad Mahdi A.

AU - Koseoglu-Imer, Derya Y.

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