Effective reduction of fluorine content in Syrian commercial phosphoric acid using silica-gel under three different conditions

Afinidad

Volumn 58, Issue 493, 2001, Pages 197-209

  Baidoun, Reem ^a   Abu Hilal, Jamal ^a   Allaf, Abdul W ^a  

^a DEPARTMENT OF MOLECULAR BIOLOGY AND BIOTECHNOLOGY   (Syrian Arab Republic)

Author keywords

Extraction; Fluorine; Phosphoric acid; Purification and reduction

Indexed keywords

EID: 0039782237     PISSN: 00019704     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (14)

1. L. W. Bierman, M. L. Lopez and J. E. Perkins: USA Patent, 4, 877, 594 (Int. Cl C01B 25/16; US Cl 423/321S), 1989.
2. F. Habashi and F. T. Awadalla: Separ. Sci. Tech., 18, 485-491, 1983.
3. G. Koch, E. Scheibler and F. Wolsten: in Proceedings of the Second International Congress on Phosphorus Compounds. Boston, 1980, Institute Mondial du Phosphate, Paris, 809-818, 1981.
4. G. L. Beer and E. Chentob: USA Patent, 4, 379, 776 (Int. Cl C01B25/16; US Cl 423/321S), 1983.
5. A. Marcilla, F. Ruiz and D. Martinez-Pons: Solv. Extra. Ion Proc., 11, 455-467, 1993.
6. A. Marcilla, F. Ruiz, J. Campos and M. Asensio: Solv. Extr. Ion Exch., 7, 211-221, 1989.
7. F. Ruiz, A. Marcilla and A. M. Ancheta: Solv. Extr. Ion Exch., 5, 1141-1150, 1987.
8. E. Aharon and B. Avraham: Solv. Extr. Ion Exch., 2, 677-697, 1984.
9. E. Aharon, H. Klara and B. Avraham: Solv. Extr. Ion Exch., 2, 659-675, 1984.
10. G. Reinhard and S. Guenther: Ger Patent DE 3, 328, 499 (Int. Cl C01B 25/46), 1985.
11. S. Berte, V. F. Karmyshove, I. A. Spiridonova, S. L. Akhnazarova and I. A. Petropavlovskii: VINTT 1, 2068-2081, CA 97:165369t, 1981.
12. I. Alexander, B. Menacheny, O. Jacob and K. Dagobert: Ger Patent DE 3, 438, 655 (Int. Cl C01B 25/234), 1986.
13. QUANTECH, Multi-Element-Analysen, MB3/139999, Bremen, Germany, 1999.
14. R. Baidoon, J. Abu-Hilal and Abdul. W. Allaf, to be published, 2000.