Petroleum Processing and Petrochemicals ›› 2017, Vol. 48 ›› Issue (2): 1-5.

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CLEAN PRODUCTION OF ZSM-5 MOLECULAR SIEVE BY BIPOLAR MEMBRANE ELECTRODIALYSIS

    

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  • Received:2016-07-11 Revised:2016-09-20 Online:2017-02-12 Published:2017-01-17
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Abstract: Sodium removal process of ZSM-5 zeolite was studied by bipolar membrane electrodialysis (EDBM). The results indicate that the zeolite with Na2O content less than 0.1% can be obtained by EDBM, meanwhile Si,Na and part of template agent can be recycled. The EDBM zeolite is equal to the ZSM-5 zeolite by NH4+ exchange method both in physicochemical properties and catalytic performance. The new process is eco-friendly with no ammonia or salty wastewater emission, and the water can be reused.

Key words: bipolar membrane electrodialysis, removal of sodium, recovery, template

CLC Number: