Artículos de revistas
Organosolv Pulping. Viii. Formic Acid Delignification Of Pinus Radiata D. Don
Registro en:
Cellulose Chemistry And Technology. Editura Acad Romane, Bucharest, Romania, v. 33, n. 1, p. 81 - 89, 1999.
5769787
2-s2.0-0033307025
Autor
Baeza J.
Pedreros A.
Urizar S.
Freer J.
Schmidt E.
Peralta-Zamora P.
Duran N.
Institución
Resumen
The aim of this study was to optimize the organosolv cooking system involving formic acid as a cooking agent. The wood raw material used was Pinus radiata D. Don sawdust and the cooks were performed on a small scale using 3 g o.d. sawdust in 100 mL of solvent. The effects of solvent ratio and catalyst on delignification were studied in order to optimize the process. A delignification yield of 65% was afforded with the sawdust, the cellulosic material exhibiting 90.5% cellulose, 1.2% hemicellulose and 8.3% Klason lignin, catalyzed with 0.018% of HCl. Several delignification parameters were studied; among them, presoaking with NaHCO3 of Pinus radiata chips catalyzed with 0.018% HCl at 98% formic acid for 3 h, gave a low reject value, Kappa number of around 60 and a 67% pulp yield. Cellulose and Klason lignin of 79.5% and 11% were afforded, respectively. A preliminary pulp evaluation indicated that, at the same freeness of 42 °SR, a 25% less energy than in Kraft refining resulted. However, the formic pulp exhibited around 50% of the tear and burst indexes of those of Kraft pulp. 33 1 81 89 El-Sakhawy, M., Lonnberg, B., Fahmy, Y., Ibrahim, A.A., (1996) Cellulose Chem. Technol., 30, p. 483 Johansson, A., Aaltonen, O., Ylinen, P., (1987) Biomass, 13, p. 45 Henry, W., (1991) Tappi Pulping Conference, 2, p. 653. , Orlando, USA Balogh, D.T., Curvelo, A.A.S., De Groote, R.A.M.C., (1992) Holzforschung, 46, p. 343 Curvelo, A.A.S., (1992) Proc. Second Brazilian Symp. on the Chemistry of Lignin and Other Wood Components (Campinas, S.P. Brazil), 3, p. 44 De Groote, R.A.M.C., Curvelo, A.A.S., Alaburda, J., Botaro, V.R., (1993) Cellulose Chem. Technol., 27, p. 555 Lönnberg, B., Laxen, T., Sjoholm, R., (1987) Paperija Puu, Papper Och Tra., 69, p. 757 Aliev, R.G., Burov, A.V., Rusakov, A.E., (1990) Khim Drev. (Riga), 3, p. 45 Lora, J.H., Aziz, S., (1985) Tappi J., 68, p. 94 Tournier, H., Johansson, A., Sachetto, J.P., Armonet, J.M., Michel, J.P., Roman, A., US Patent 4,511,433 (1985)Baumeister, M., Edel, E., German Patent, 3,212,767 DOS (1983)Wegener, G., Lindner, A., (1989) Proc. First Brazilian Symp. on Lingins and Other Wood Components Sao Carlos, S.P. Brazil, 1, p. 114 Sundquist, J., Laarmanen, L., Poppious, K., (1988) Paperija Puu, Paper and Timber, 70, p. 143 Pazner, L., Cho, H.J., (1989) Tappi J., 73, p. 135 Kordsachia, O., Reipschlager, B., Patt, R., (1990) Paperija Puu, Paper and Timber, 72, p. 44 Patt, R., Kordsachia, O., Schubert, H.L., (1992) Proc. Second Brazilian Symp. Chemistry of Lignins and Other Wood Components, 3, p. 56. , Campinas, S.P. Brazil Aziz, S., Sarkanen, K., (1989) Tappi J., 73, p. 169 Jamieson, S., (1991) Pulp Paper Can., 92, p. 27 Goyal, Q.C., Lora, J.H., Rye, E.K., (1992) Tappi J., 75, p. 110 Nimz, H.H., Casten, R., (1986) Holz Roh-Werkstoff, 44, p. 207 Young, R.A., Davis, J.C., Weismann, E.B., (1986) Holzforschung, 40, p. 99 Uraki, T., Sano, Y., Sossaga, T., (1991) Jpn. Tappi J., 45, p. 1018 Bucholtz, M., Jordan, R., (1983) Pulp and Paper, 57, p. 102 Ede, R., Brunow, G., (1989) Holzforschung, 43, p. 317 Joensuu, E., (1991) Tech. Finland, 1, p. 26 Baeza, J., Freer, J., Pedreros, A., Schmidt, E., Mansilla, H., Duran, N., (1990) Bol. Soc. Chilena Quím., 35, p. 331 Baeza, Fernandez, A.M., Freer, J., Pedreros, A., Schmidt, E., Durán, N., (1991) Appl. Biochem. Biotechnol., 31, p. 273 De Erismann, N.M., Fernandez, A.M., Baeza, J., Freer, J., Mansilla, H., Durán, N., (1990) Biotechnol. Lett., 12, p. 305 Baeza, J., Urizar, S., De Erismann, N.M., Freer, J., Schmidt, E., Durán, N., (1992) Bioresource Technol., 37, p. 1 De Erismann, N.M., Freer, J., Baeza, J., Duran, N., (1994) Bioresources Technol., 47, p. 247 Shimada, K., Hosoya, S., Tomimura, Y., (1991) Proc. 6th. International Symposium on Wood and Pulping Chemistry (APPITA 91), 2, p. 183 TAPPI Standard T13 m-54Pereira, H., Sardinha, R., (1984) Appita, 37, p. 661 TAPPI Standard T232 cm-85Akhtaruzzaman, A.F.T., Virkola, N.E., (1980) Paperi Ja Puu, 62, p. 607 Robertson, L., (1989) Paperi Ja Puu, 71, p. 567 Mbachu, R.A.D., Manley, R.St.J., (1981) Tappi, 64, p. 67