Mixed matrix membrane contactor containing core-shell hierarchical Cu@4A filler for efficient SO2 capture

Lei Zhang, Qingping Xin, Liguo Lou, Xu Li, Leitao Zhang, Shaofei Wang, Yifan Li, Yuzhong Zhang, Hong Wu, Zhongyi Jiang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Achieving high flux membrane contactor is significantly important for hazardous gas removal. In this study, we prepared poly(vinylidene fluoride) (PVDF)-based mixed matrix membrane contactor (MMMC) that contained a core-shell hirarchical Cu@4A composite filler (Cu@4A). On one hand, the Cu@4A regulated the physical structure of MMMC, which enhanced gas permeation and thus resulted in the increment of physical SO2 absorption flux. On the other hand, Cu@4A changed the chemical environment of MMMC by remarkably increased SO2 facilitated transport sites, which elevated SO2 concentration around Cu@4A by the enhancement of adsorption and oxidation of SO2, resulting in the increase of chemical SO2 absorption flux. Moreover, the copper nanosheets on 4A helped to construct facilitated transport pathways along the Cu@4A fillers at polymer-filler interface. The results showed that Cu@4A loaded MMMC exhibited increased SO2 removal efficiency and SO2 absorption flux compared with PVDF control membrane. Specifically, the M1040 MMMC loaded with 40 wt% Cu@4A and PVDF concentration 10 wt% exhibited the highest SO2 removal efficiency and SO2 absorption flux, which was up to 73.6% and 9.1 × 10−4 mol·m-2·s-1 at the liquid flow rate of 30 L/h. Besides, the overall SO2 mass transfer coefficient (Ko) and membrane mass transfer resistance (H/Km) were investigated.
Original languageEnglish (US)
Pages (from-to)160-169
Number of pages10
JournalJournal of Hazardous Materials
Volume376
DOIs
StatePublished - May 16 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 21676201, 21706189, 51503146), Tianjin Municipal Education Commission Scientific Research Project (2017KJ074), Science and Technology Plans of Tianjin (18JCQNJC06800), Technology Research Funds Projects of Ocean (201305004-5), National Key Research and Development Plan (2017YFC0404001), Science and Technology Plans of Tianjin (18PTSYJC00190, 17PTSYJC00050), Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) of Ministry of Education of China (Grand no. IRT13084), Program for Innovative Research Team in University of Tianjin (No. TD13-5044), and State Key Laboratory of Separation Membranes and Membrane Processes (Tianjin Polytechnic University) (M1-201701).

Fingerprint

Dive into the research topics of 'Mixed matrix membrane contactor containing core-shell hierarchical Cu@4A filler for efficient SO2 capture'. Together they form a unique fingerprint.

Cite this