Preparation of novel functional MER zeolite membrane for potassium continuous extraction from seawater
Source abstract
Abstract
Merlinoite(MER) zeolite membranes were synthesized on the outer surface of porous α-alumina tubular support by in-situ hydrothermal synthesis method without organic template. The synthetic MER zeolite membranes (sample 1, sample 2 and sample 3) were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX). The thickness of sample 2 without cracks is about 15 μm. The synthetic MER membrane which is mainly composed of Si, Al, O and K is typical merlinoite structure. The performance of sample 2 for potassium extraction in simulated seawater was researched by the membrane tube reactor. The continual ion-exchange reaction was carried out for 108 h at room temperature. The average exchange rate for K+ ion was 32.8% and the average rejection rates for Na+, Ca2+ and Mg2+ ions were 93.4, 98.4 and 98.2% respectively. So the MER zeolite membrane (sample 2) has preference selectivity for K+ ion and can be used as a potential inorganic membrane for potassium extraction from seawater.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Zeolite Catalysis and Synthesis · Chemical Synthesis and Characterization · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
1. J. Hou, J.S. Yuan, R. Shang, Synthesis and characterization of zeolite W and its ion-exchange properties to K+ in seawater. Powder Technol. 226, 222–224 (2012)10.1016/j.powtec.2012.04.046 ↗
2. N. Jin, C.X. Meng, J. Hou, Preparation and characterization of merlinoite for potassium extraction from seawater. J. Ind. Eng. Chem. 20, 1227–1230 (2014)10.1016/j.jiec.2013.08.003 ↗
3. J. Hou, J.S. Yuan, J. Xu, Y.P. Fu, C.X. Meng. Template-free synthesis and characterization of K-phillipsite for use in potassium extraction from seawater. Particuology 11, 786–788 (2013)10.1016/j.partic.2013.02.003 ↗
4. J.L. Cao, X.W. Liu, R. Fu, Z.Y. Tan, Magnetic P zeolites: synthesis, characterization and the behavior in potassium extraction from seawater. Sep. Purif. Technol. 63, 92–100 (2008)10.1016/j.seppur.2008.04.015 ↗
5. Y. Liu, J.M. Lu, Y. Zhang, J.Q. Wang, Synthesis and properties of Na-ferrierite tubular membrane formed on macroporous α-Al2O3 support by conventional and vacuum-assisted secondary growth. Sep. Purif. Technol. 81, 1–11 (2011)10.1016/j.seppur.2011.06.026 ↗
6. L.J. Shan, J. Shao, Z.B. Wang, Y.S. Yan, Preparation of zeolite MFI membranes on alumina hollow fibers with high flux for pervaporation. J. Membrane Sci. 378, 319–329 (2011)10.1016/j.memsci.2011.05.011 ↗
7. L. Sandström, E. Sjöberg, J. Hedlund, Very high flux MFI membrane for CO2 separation. J. Membrane Sci. 380, 232–240 (2011)10.1016/j.memsci.2011.07.011 ↗
8. R.F. Zhou, Q. Zhang, J. Shao, Z.Z. Wang, X.S. Chen, H. Kita, Optimization of NaY zeolite membrane preparation for the separation of methanol/methyl methacrylate mixtures. Desalination 291, 41–47 (2012)10.1016/j.desal.2012.01.023 ↗
9. P. Swenson, B. Tanchuk, E. Bastida, W.Z. An, S.M. Kuznicki, Water desalination and de-oiling with natural zeolite membranes—potential application for purification of SAGD process water. Desalination 286, 442–446 (2012)10.1016/j.desal.2011.12.008 ↗
10. C. Zhang, Z. Hong, J.X. Chen, X.H. Gu, W.Q. Jin, N.P. Xu, Catalytic MFI zeolite membranes supported on α-Al2O3 substrates for m-xylene isomerization. J. Membrane Sci. 389, 451–458 (2012)10.1016/j.memsci.2011.11.013 ↗
11. Y. Hasegawa, T. Nagase, Y. Kiyozumi, F. Mizukami, Preparation, characterization, and dehydration performance of MER-type zeolite membranes. Sep. Purif. Technol. 73, 25–31 (2010)10.1016/j.seppur.2009.07.028 ↗
12. T. Nagase, Y. Kiyozumi, Y. Nemoto, N. Hirano, Y. Hasegawa, T. Ikeda, T. Inoue, T. Nishide, F. Mizukami, An effect of the seed species on the PV performance of the secondary synthesized MER zeolite membranes. Micropor. Mesopor. Mater. 126, 107–114 (2009)10.1016/j.micromeso.2009.05.026 ↗
13. J. Hou, J.S. Yuan, J. Xu, L.H. Sun, Synthesis and characterization of K-phillipsite (K-PHI) membrane for potassium extraction from seawater. Micropor. Mesopor. Mater. 172, 217–221 (2013)10.1016/j.micromeso.2013.01.034 ↗