Removal of Color and Organic Matter in Industrial Phosphoric Acid by Ozone: Effect on Activated Carbon Treatment
作者:
H. Belfadhel,
A. Ratel,
A. Ouederni,
R.S. Bes,
J.C. Mora,
期刊:
Ozone: Science & Engineering
(Taylor Available online 1995)
卷期:
Volume 17,
issue 6
页码: 637-645
ISSN:0191-9512
年代: 1995
DOI:10.1080/01919512.1995.10555775
出版商: Taylor & Francis Group
关键词: Ozone;Organic Matter;Phosphoric Acid;Activated Carbon
数据来源: Taylor
摘要:
Industrial phosphoric acid at 42-45% P2O5and containing organic matter (OM) in the range of 220 mg/L to 300 mg/L is treated by combined ozonation and activated carbon. Ozonation alone removes the initial dark color of the acid and eliminates the organic content. Adsorption on activated carbon alone can reduce OM levels by 80% for more than 25 g/kg P2O5. We find that a preozonation noticeably enhances activated carbon efficiency and reduces its specific consumption. Isoconversion curves are plotted in specific ozone and activated carbon ratio space.
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