Results 61 to 70 of about 894 (162)

Application of xylanases from Amazon Forest fungal species in bleaching of eucalyptus kraft pulps

Brazilian Archives of Biology and Technology, 2007
Crude xylanase preparations from Penicillium corylophilum, Aspergillus niger and Trichoderma longibrachiatum were used to treat Eucalyptus kraft pulp, prior to chlorine dioxide and alkaline bleaching sequences. The enzyme pretreatment improved brightness
Roseli Garcia Medeiros, Francides Gomes da Silva Jr., Sônia Nair Báo, Rogério Hanada, Edivaldo Ximenes Ferreira Filho   +4 more
doaj   +1 more source

Advances in lignin chemistry during pulping and bleaching

Industrial Crops and Products
Lignin, a key component of plant cell walls, undergoes significant structural changes during pulping and bleaching processes that critically impact pulp quality and paper properties.
Jing Li, Yu-Ning Zha, Han-Min Wang, Jia-Nan Tian, Qing-Xi Hou   +4 more
doaj   +1 more source

Chlorine Dioxide Bleaching of Soda Rapeseed Pulp

, 2017
Soda pulp cooked from rapeseed straw (Brassica napus L. convar. napus, winter line genotype Labrador) was subjected to a four-stage elemental chlorine-free bleaching under laboratory conditions. The bleaching sequence comprised three chlorine dioxide stages.
Potůček, František, Říhová, Martina   +1 more
openaire   +1 more source

STUDIES ON XYLANASE AND LACCASE ENZYMATIC PREBLEACHING TO REDUCE CHLORINE-BASED CHEMICALS DURING CEH AND ECF BLEACHING

BioResources, 2012
The biobleaching efficiency of xylanase and laccase enzymes was studied on kraft pulps from wood and nonwood based raw materials employed in the Indian paper industry.
Vasanta V. Thakur,, Rakesh Kumar Jain,, Rajeev Mohan Mathur   +2 more
doaj  

Fiber surface chemistry in relation to the efficiency of chlorine dioxide bleaching

BioResources, 2017
Relationships between fiber surface chemical components and the efficiency of chlorine dioxide bleaching were studied using chemical analysis in combination with attenuated total reflectance-Fourier transform infrared spectrscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS).
Kun Zhang, Xuejiao Lin, Jinghao Xing, Haichuang Zhang, Shuangfei Wang, Shuangxi Nie   +5 more
openaire   +1 more source

MOLYBDENUM CATALYZED ACID PEROXIDE BLEACHING OF EUCALYPTUS KRAFT PULP

BioResources, 2008
Molybdenum catalyzed peroxide bleaching (PMo Stage) consists of pulp treatment with hydrogen peroxide under acidic conditions in the presence of a molybdenum catalyst.
Marcos S. Rabelo, Jorge L. Colodette, Vera M. Sacon, Marcelo R. Silva, Marco A. B. Azevedo   +4 more
doaj  

Impact of Chlorine Dioxide Slow-releasing Preservative on Quality and Key Anthocyanins of Litchi during Low Temperature Storage

Shipin gongye ke-ji
Litchi is prone to deterioration in quality after harvest due to degradation of anthocyanins and respiratory metabolism, and chlorine dioxide (ClO2) has multiple effects on color protection and respiratory inhibition. In this study, 0.1 g (T1), 0.4 g (T2)
Li GUO, Guang WU, Qingchun YIN, Lin LUO, Hao DENG   +4 more
doaj   +1 more source

PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA

BioResources, 2010
Alfa, also known as Stipa tenacissimaI or “halfa”, is grown in North Africa and south Spain. Due to its short fiber length, paper made from alfa pulp retains bulk and takes block letters well.
Baya Bouiri, Moussa Amrani
doaj  

BRANQUEAMENTO COM OZÔNIO EM PH NEUTRO ¿ UM NOVO CONCEITO

Ciência Florestal, 2006
The effect of medium consistency ozone stage pH was evaluated for brown and oxygen delignified eucalyptus kraft pulp samples obtained from VCP - Luiz Antônio pulp mill.
Fernando De Carvalho, Denis Asbahr, Antonio A. R. Godoy, Jorge Luiz Colodette   +3 more
doaj