The effect of ozonation on sorption properties of active carbon and its porous structure. Model investigations

• Autorzy: Wolborska A. , Maryniak K. , Perkowski J.
• Języki publikacji: EN

Abstrakty

EN

The ozone-granulated active carbon system (ozone-GAC) is more often introduced in the technological water treatment cycle. The reactivity of ozone towards water pollutants leads to their oxidation and growth of biodegradability, which is well-known and favourable for the operation of a carbon bed. Does ozonation also affect the active carbon itself? Preliminary investigations on the ozonation of water solution of active carbon are presented. The results of the process were determined by analysing the porous structure of initial adsorbents and after their modification. Also the changes in their sorptivity were determined by studies of adsorption equilibrium for model systems of phenol-active carbon. In the investigations carbon types NOR1T ROW 0.8 SUPRA and PK 1-3 were used. The modification of initial adsorbents deteriorated to a small extent the parameters of porous structure such as specific surface, total pore volume and fraction of micropores. As a result of the ozonation, the sorptivity of the tested active carbon to phenol changes. In general, this change does not refer to the monolayer volume. A tendency to weaken the adsorbate-adsorbent relation is observed.

Słowa kluczowe

EN

active carbon; adsorption; ozonation; pore structure of adsorbent

PL

węgiel aktywny; adsorpcja; ozonowanie; adsorbenty; struktura porów

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2002
• Tom: Vol. 4, nr 2
• Strony: 42--46
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Wolborska A.

• Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wolczanska 213, 93-005 Lodz, Poland, fax: [phone]

autor

Maryniak K.

• Faculty of Process and Environmental Engineering, Technical University of Lodz, ul. Wolczanska 213, 93-005 Lodz, Poland, fax: [phone]

autor

Perkowski J.

• Inteitute of Applied Radiation Chemistry, Technical University of Łódź

Bibliografia

• (1) Aeppli J., Dyer-Smith P., Plumridge J., Ozon in potable water treatment in the UK, Ochrona Środowiska, 1997, 3 (66), 23 -28 (in Polish).
• (2) Pawełek J., Ozon application in the water treatment in water supply system of Zurych, Gaz, Woda i Technika Sanitarna, 1996, 6 ,172 -175 (in Polish).
• (3) Wilmański K., Gancarz J., GAC filter performance during three-year full-scale operation: a case study. Ochrona Środowiska, 1997,4 (67), 27 - 31 (in Polish).
• (4) Holden B., Croll B., Gunstead J., Operation and optimization of GAC/ozone on Anglian Water Surface Water Treatment Works, 13th Ozone Word Congress, Kyoto, Japan 1997.
• (5) Choma J., Jaroniec M., Burakiewicz-Mortka W., Klinik J., Tybel A., Oxidation-induced changes in the surface and structural properties of active carbons. Ochrona Środowiska, 1998, 3 (70), 13-20 (in Polish).
• (6) Jankowska A., Siemieniewska T., Tomków K., Jasieńko-Hałat M., Kaczmarczyk J., Albiniak A., Freeman J.J., Yates M., The pore structure of activated chars of brown coal humic acids obtained at increased rate of carbonization, Carbon, 1993, 31, 871 - 880.
• (7) Serrano, V.G., Beltrán F.J., Segovia A. D., Adsorption of p-nitrophenol from aqueous solution on activated carbon: influence of pH and preozonization, Chem. Eng. Technol. 1992, 15, 124 - 130.
• (8) Hyseln K., Schlögl R., Preparation of large amounts of acidic surface groups, 1994, Conference Carbon'94, Grenada,. 336 - 337.