Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-20T06:28:44.593Z Has data issue: false hasContentIssue false
  • English
  • Français

Regeneration of PAN-based activated carbon fibers by thermal treatments in air and carbon dioxide

Published online by Cambridge University Press:  03 March 2011

Tse-Hao Ko  and
P. Chiranairadul
Tse-Hao Ko
Affiliation:
Department of Materials Science, Feng Chia University, Taichung, Taiwan, Republic of China
P. Chiranairadul
Affiliation:
Department of Materials Science, Feng Chia University, Taichung, Taiwan, Republic of China
Get access

Abstract

PAN-based activated carbon fibers were saturated by dye adsorption and then were regenerated by thermal treatment in carbon dioxide and in air. The dye adsorption and the regeneration were carried out in several cycles. The changes in fiber physical properties and the capacity of dye adsorption will be discussed. Activated carbon fibers regenerated in air had greater dye adsorption and weaker mechanical properties than those regenerated in carbon dioxide. The preferred orientation changed slightly during air reactivation, but it decreased gradually after carbon dioxide regeneration. The regeneration processes led to a decrease in the weight and degradation of mechanical properties, but the processes increased the capacity of dye adsorption. After the second regeneration, the dye adsorption capacity of activated carbon fibers that were recycled by air regeneration was 15% higher than those that were recycled by carbon dioxide regeneration. But, after the third regeneration, the fibers recycled by air regeneration lost their mechanical properties. For carbon dioxide regeneration, fibers retained satisfactory mechanical properties even after the fourth regeneration. This study indicates that multiple effective applications can be accomplished with carbon dioxide treatment in place of air regeneration. The structural changes of activated carbon fiber during different regenerations are proposed.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 8 , August 1995 , pp. 1969 - 1976
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Arons, G. N. and Machair, R. N., Textile Res. J. 42, 60 (1974).CrossRefGoogle Scholar
2Arons, G. N., Machair, R. N., Coffin, L. G., and Hogan, H. D., Textile Res. J. 44, 874 (1974).CrossRefGoogle Scholar
3Lin, R. Y. and Economy, J., Applied Polymer Symposium, No. 21, 143 (1973).Google Scholar
4Kaneko, K., Ishii, C., Ruike, M., and Kuwabara, H., Carbon 30, 1075 (1992).CrossRefGoogle Scholar
5U.S. Patent 4 362 646 (1982).Google Scholar
6U.S. Patent 4412937 (1983).Google Scholar
7Martin, R. J. and Ng, W. J., Water Res. 18, 59 (1984).CrossRefGoogle Scholar
8Martin, R. J. and Ng, W. J., Water Res. 19, 1527 (1985).CrossRefGoogle Scholar
9Magne, P. and Walker, P. L. Jr., Carbon 24, 101 (1986).Google Scholar
10Ferro-Garcia, M.A., Utrera-Hidalgo, E., Rivera-Utrilla, J., and Moreno-Castilla, C., Carbon 31, 857 (1993).Google Scholar
11Ko, T. H., Chiranairadul, P., and Lin, C. H., Polym. Eng. Sci. 31, 1618 (1991).CrossRefGoogle Scholar
12Ko, T. H., Chiranairadul, P., and Lu, C. K., Carbon 30, 647 (1992).CrossRefGoogle Scholar
13Ko, T. H., Chiranairadul, P., and Lin, C.H., J. Mater. Sci. Lett. 11, 6 (1992).Google Scholar
14Cullity, B. D., Element of X-ray Diffraction (Addison-Wesley, Reading, MA, 1978), Chap. 3.Google Scholar
15Molleyre, F. and Bastick, M., in Proc. 4th London Int. Conf. onCarbon and Graphite (Soc. Chem. Ind., London, 1974), p. 190.Google Scholar
16Marsh, H. and Kuo, K., in Introduction to Carbon Science, edited. by Marsh, H. (Butterworth & Co. Ltd., Boston, 1989).Google Scholar
17Walker, P. L. Jr.et al, Chemistry and Physics of Carbon (Marcel. Dekker, New York, 1968), Vol. 4, p. 287.Google Scholar
18Ko, T. H., Masters Thesis, Feng Chia University, Taiwan (1985).Google Scholar
19Lowell, S. and Shields, J. E., Powder Surface Area and Porosity. (Chapman and Hall, London 1991), Chap. 8.Google Scholar
20Franklin, R. E., Proc. R. Soc. London A 209, 196 (1951).Google Scholar