Skip to main content Accessibility help
×
Home

UV-Visible Response of Kraft Lignin in Soft Wood Black Liquor

  • Daojie Dong (a1) and Arthur L. Fricke (a1)

Abstract

UV-visible light absorption is an analytical method that is commonly used to determine the concentration of lignin in solution; however, there are uncertainties with this method, particularly for use in determining lignin concentration in black liquors. To try to resolve these uncertainties, a detailed study of UV-visible absorption by lignin in solution has been made.

A dual beam UV-visible instrument capable of repetitive scan was used. The effects of lignin concentration, lignin molecular weight, molecular weight dispersion, and solvent were examined as well as the effect of the reference solvent. Measurements were made for lignin dissolved in dilute caustic, DMF, THF, and DMSO. Measurements for soft wood black liquors were also made. A refined method for determining lignin concentration in soft wood black liquors resulted that is now being used in our research to evaluate lignin concentration in soft wood black liquor.

The results of the current work have led to improvements in this analytical method so that it appears to be less affected by lignin characteristics and by solution complexities.

Copyright

References

Hide All
1. Wexler, A.S., Analytical Chemistry, 36(1), 213221 (1964).
2. Zyl, J.D. Van, Wood Sci. Technol., 12(4), 251–9 (1978).
3. Boutelje, J.B. and Jonsson, U., Cellul. Chem. Technol., 14(1), 5367 (1980).
4. Alen, R., Patja, P. and Sjostrom, E., TAPPI, 62(11), 108–9 (1979).
5. Lin, S.Y. and Detroit, W.J., Ekman Day, Vol.4, 4452(1981).
6. Fricke, A.L., ”Physical Properties of Kraft Black Liquort Summary Report)Phass 1 and 2”, DOE Report #DOE/CE/40606-T5(DE88002991) P41–44, and P61.
7. Jonson, D.B., Moore, W.E. and Zank, L.C., TAPPI, 44(11), 793–8 (1961).
8. Mcnaughton, J.E., Yean, W.Q. and Goring, D.A., TAPPI, 50(11), 548552 (1967).
9. Simonson, R., Svensk Papperstidn., 74, 691 (1971).
10. Wildish, D.J., Pool, N.J. and Kristmanson, D.D., Bull. Environ. Contam. Toxicol., 16(2), 208213 (1976).
11. Bobie-, W.D., Poniatowski, S.E. and Walkinshaw, J.W., TAPPI, 64(10), 122–3 (1981).
12. Kleinert, T.N. and Joyce, C.S., Pulp. Paper Mag. Can., 58(7), 215 (1957).
13. Kleinert, T.N. and Joyce, C.S., TAPPI, 40(10), 813–21 (1957).
14. Lin, S.Y., Svensk Papperstidn., 85(18)U-, R162-R1T1 (1982).
15. Boutelje, J.B. and ErikSson-, I., Svensk Pappe~rstidn., 85(6), R39-R42 (1982).
16. Shimada, M., Fukuzuka, T. and Higuchi, T., TAPPI, 54(1), 72–8 (1971).
17. Janshekar, H., Brown, C. and Fiecher, A., Analytical Chemica Acta., 130(1), 8191 (1981).
18. Hill, M. and FPicke, A.L., TAPPI, 67(6), 100–3 (1984).
19. Kleinert, T.N., CA 74(6):23747r.
20. Lundquist, K. and Kirk, T.K., TAPPI, 63(1), 80 (1980).
21. Richtzenhain, H. and Dryselius, E., Svensk Papperstidn., 56, 324 (1953).
22. Lea, D.C., TAPPI, 37, 393–9 (1954).
23. Rice, F.A.H., and Fishbein, L.J., Am. Chem. Soc., 78, 1005–9 (1956).

UV-Visible Response of Kraft Lignin in Soft Wood Black Liquor

  • Daojie Dong (a1) and Arthur L. Fricke (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed