Optimization of laccase–mediator system in producing biobleached flax pulp

摘要: High-quality flax pulp was bleached in a short totally-chlorine-free (TCF) sequence. The LP biobleaching sequence includes an enzyme treatment with laccase the presence of HBT as mediator (L stage) and hydrogen peroxide stage (P stage). operating conditions for system were optimized by using sequential statistical plan involving four variables, influence which on properties after P examined over enclosed operation regarding future industrial application. Mathematical models accurately predicting both terms previous variables. This allows obtaining increase ISO brightness 40% delignification 80%. Process variables optimization establishing application most appropriated to obtain certain that turn out be easily adaptable existing processes. As novelty, toxicity measurements determined L effluents. results show it is possible apply this without having negative environmental impact.