The Use of Supercritical Fluid Extraction in Carrier Recovery from a Spent Active Carbon

Abstract

The present paper is aimed at showing the usefulness of supercritical fluid extraction in the removal of organic substances and zinc from the surface of a dangerous waste product, i.e. spent catalyst employed in the manufacture of vinyl acetate. The possibility of recovering active carbon (the carrier support for the catalyst concerned) so that it may be used in subsequent processes by combining supercritical fluid extraction with hydrochloric acid leaching has been demonstrated.

References

Adschiri

Suzuki

and Arai

(1991) Fuel 70, 1483.

Czarny

Wolczko

and Dąbek

(1990) Przem. Chem. 69, 404.

Dąbek

(2001) Przem. Chem., accepted for publication.

DeFilippi

R.P.

Krakonis

V.J.

Robey

R.J.

and Modell

(1980) Supercritical Fluid Regeneration of Activated Carbon for Adsorption of Pesticides, Environmental Protection Agency Report, Washington, DC, USA.

Grajek

(2000) Adsorp. Sci. Technol. 18, 347.

Grajek

Witkiewicz

Robak

and Kubicka

(1998) Przem. Chem. 77, 8.

Higashidate

Yamauchi

and Satio

(1990) J. Chromatogr. 515, 295.

H.Q.

and Guo

(1992) Fuel Process. Technol. 31, 79.

Jankowska

Grajek

Witkiewicz

and Świątkowski

(1998a) Przem. Chem. 77, 219.

10.

Jankowska

Grajek

Witkiewicz

and Świątkowski

(1998b) Przem. Chem. 77, 415.

11.

Müller

Ulrich

Gordziel

and Kiessling

(1985) Chem. Tech. 37, 160.

12.

Namieśnik

Łukasiak

and Jamrógiewicz

(1995) Pobieranie próbek środowiskowych do analiz, WNT, Warsaw.

13.

Ondrejovič

and Sirota

(1999) Monogr. Ser. Int. Conf. Coord. Chem., Smolenice, Slovakia, Vol. 4, Slovak Technical Press, Bratislava, Slovakia.

14.

Robak

Grajek

Kubicka

and Witkiewicz

(1997) Przem. Chem. 76, 304.

15.

Smith

R.M.

(1996) LC–GC Int. 9, 8.

16.

Stolarski

and Szczygieł

(1991) Fuel 70, 1421.

17.

Tan

C.S.

and Liou

D.C.

(1988) Ind. Eng. Chem., Res. 27, 988.

18.

Wang

Elshani

and Wai

C.M.

(1995) Anal. Chem. 67, 919.

19.

Welcher

F.J.

(1958) The Analytical Uses of Ethylenediamine Tetraacetic Acid, D. Van Nostrand Co., Inc., New York.

20.

Wilheim

and Hedden

(1986) Fuel 65, 1209.

21.

Wilson

E.K.

(1996) C & EN, West Coast Bureau 27, 15 (April issue).

22.

Witkiewicz

(1995) Podstawy chromatografii, WNT, Warsaw.

23.

Zacharia

R.E.

Simon

S.L.

Beckman

E.J.

and Enick

R.M.

(1999) Polym. Degrad. Stab. 63, 85.

The Use of Supercritical Fluid Extraction in Carrier Recovery from a Spent Active Carbon–Zinc Acetate Catalyst

Abstract

References