Biopulping of Bamboo Using White-Rot Fungi Schizophyllum Commune

In this study, we investigated the use of white-rot fungi Schizophyllum commune as delignification agent in biopulping of bamboo. The influence of S. commune in the pulping process of two bamboos, kuning bamboo (Bambusa vulgaris) and betung bamboo (Dendrocalamus asper ), has been observed. S. commune inoculated-bamboo chips with ±1.6 cm in length were incubated for 2 and 4 weeks and then cooked using open hot-soda pulping. Process condition was arranged by using active alkali 25% of 1000 g targeted oven-dried weight of chips, followed by pulping the chips for 2 h at 100˚C targeted temperature with liquor-to-wood ratio of 10:1. This process was then continued by defibration process using beater hollander for 45 min. Analysis was performed on total pulp yield (TAPPI 210 cm-93), kappa number (TAPPI 236 cm-85) and delignification selectivity (ratio of carbohydrate and residual lignin in pulp). The result showed that different incubation periods gave different pulp yields for these two bamboos. It can be seen that the use of S. commune in the pulping process of bamboo seems to have insignificant effect. It increased a small amount of pulp yield of kuning bamboo but it did not increase that of betung bamboo. The positive effects of the fungi on other parameters of pulp properties, i.e. kappa number and delignification selectivity, could not be observed as well. Proceeding The 2nd International Symposium for Sustainable Humanosphere. Hal. 8-13 ISSN 2088-9127