Conversion of Natural Clinoptilolite to SAPo and investigation its anion exchange properties
Publish place: Iran International Zeolite Conference
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ZEOLITE01_104
تاریخ نمایه سازی: 30 دی 1387
Abstract:
Nitrate is an anion of major importance particularly in biological areas. Excessive amounts in water
supplies indicate pollution from sewage or agricultural effluents. The effects of excessive quantities of nitrate
in water are well known. In this research structural modification of natural clinoptilolite by isomorphic
substitution was performed. Isomorphously substituted zeolite, silicoaluminophosphate (SAPo) was prepared
under melting conditions from natural clinoptilolite. It was characterized by XRD, XRF, FT-IR, DTG and
SEM techniques. The characterization process revealed that product is different from AlPo. Ion exchange
property of the new modified product was studied for NO3
-, NO2
- and F- ion. The uptake of F- was higher
than those of NO3
- and NO2
-. Anion exchange Isotherms were constructed for NO3
- and discussed. The ion
exchange chromatography and neutron activation technique were used to study the extent of the exchange.
Authors
Hossein Faghihian
Department of Chemistry, University of Isfahan,Isfahan ۸۱۷۴۶-۷۳۴۴۱, Iran
Hossein Kazemian
R&D Lab. Of SPAG Co., Technology incubator, Sci & Technol. Park of Tehran University, Tehran, Iran,
Mohammad Hadi Mohammadi
Department of Chemistry, University of Isfahan,Isfahan ۸۱۷۴۶-۷۳۴۴۱, Iran
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