Buscar
Mostrando ítems 1-10 de 37
Sublethal Effects of Chlorine-Free Kraft Mill Effluents on Daphnia magna
(2016)
The implementation of elemental chlorine-free (ECF) bleaching methods has drastically reduced the aquatic toxicity of Kraft mill effluents during the last decade. However, the residual toxicity of Kraft mill effluents is ...
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES
(Univ Federal Vicosa, 2018-01-01)
The kraft pulp of Eucalyptus spp. is relatively easy to be bleached. Therefore, studies have been carried out to reduce the number of stages of bleaching in the plant and minimize process costs. The present work aimed to ...
BLEACHING EUCALYPTUS PULPS WITH SHORT SEQUENCESBranqueamento de polpa de eucalipto com sequências curtas
(Universidade Federal de Santa Maria, 2011)
Manganese peroxidase and biomimetic systems applied to in vitro lignin degradation in Eucalyptus grandis milled wood and kraft pulps
(Wiley-Blackwell, 2016-05-01)
BACKGROUNDOrganoperoxyl radicals generated from unsaturated fatty acids can initiate lignin degradation reactions. RESULTSManganese peroxidase (MnP, EC 1.11.1.13) produced by the basidiomycete Ceriporiopsis subvermispora ...
Branqueamento de polpa de eucalipto com sequências curtas
(Ciência Florestal, 2019)
Effect of alkaline extraction in reducing the Kappa number in ECF bleaching
(Centro Pesquisas Florestais, Ufsm, 2021-01-01)
The acid hydrolysis stage (A(HT)) used in bleaching sequences of pulp, has as its main objective, the degradation of hexenuronic acids which are present in the pulp and can affect its brightness, reversal of brightness, ...
Avaliação técnico-econômica do branqueamento segundo a sequência ADP
(Universidade Estadual Paulista (Unesp), 2017-06-27)
Diferentes sequências e condições de branqueamento têm sido exploradas ao longo dos últimos anos, nos quais o processo em múltiplos estágios tornou-se prática comum nas indústrias. A produção de celulose como um todo é uma ...