Results 151 to 160 of about 274,187 (223)

Poly(lactic acid) composites reinforced with kraft pulp fibres: Production by a papermaking process and characterisation

Composites. Part A, Applied science and manufacturing, 2019
Four different pulp fibres, representing short and long cellulose fibres and chemically modified fibres, were tested as reinforcements for poly(lactic acid) composites. A simple papermaking method was used to form the composite sheets, which were further
Sónia Sousa, A. Costa, R. Simões
semanticscholar   +1 more source

Durability of cementitious materials reinforced with various Kraft pulp fibers

Construction and Building Materials, 2018
This study was completed to determine the strength, permeability, stability, and interfacial properties of cementitious materials reinforced with engineered Kraft pulp fibers namely, mechanically modified fiber and chemically treated fiber.
E. Booya, H. Ghaednia, Sreekanta Das, H. Pande   +3 more
semanticscholar   +1 more source

Biobleaching of kraft pulp

Process Biochemistry, 1992
Abstract This review reviews current research on the application of biotechnology to the bleaching of kraft pulp. Biobleaching research focuses on using white rot fungi, and ligninase and hemicellulase enzymes. Bleaching with white rot is generally very slow and the primary problems appear to be the control of cellulose degradation, the technical ...
Pratima Bajpai, Pramod K. Bajpai
openaire   +1 more source

Production and purification of xylanase from alkaliphilic Bacillus licheniformis and its pretreatment of eucalyptus kraft pulp

, 2018
Xylanases from bacterial sources have potential applications in various industrial processes. In the present study, the effect of enzymatic pre-treatment on pulp bleaching has been investigated using purified xylanase from alkaliphilic Bacillus ...
A. Raj, Sharad Kumar, Sudheer Kumar Singh, J. Prakash   +3 more
semanticscholar   +1 more source

Comparison between Green Liquor Pretreatment-Kraft Pulping and Conventional Kraft Pulping

Advanced Materials Research, 2013
This paper studied the differences of pulping performances, beating characteristics and strength properties between green liquor pretreatment-Kraft pulping and conventional Kraft pulping based on previous optimized pulping conditions. The green liquor pretreatment-Kraft pulping has higher yield, lower Kappa number, reduced residual effective alkali and
Zhang Hong Xie, Jing Hui Zhou, Hai Ming Li, Guang Wei Sun   +3 more
openaire   +1 more source

Pre-bleaching of kraft acacia pulp

Nordic Pulp & Paper Research Journal, 2019
Kraft pulps from acacia hybrid, Acacia mangium of 8 years old and Acacia auriculiformis of 6, 8 and 10 years old were pre-treated with oxygen, peroxyformic acid and acid treatment prior to bleaching.
M. Haque, Moumita Nanjiba, M. Jahan, M. A. Quaiyyum, M. Z. Alam, J. Nayeem   +5 more
semanticscholar   +1 more source

Bleaching of Kraft Pulp with Commercial Xylanases

Applied Biochemistry and Biotechnology, 1999
The performance of commercial xylanases in totally chlorine-free bleaching of kraft pulp from conifer was tested with Pulpzyme HC (Novo Nordisk) and Cartazyme NS-10 (Sandoz/Clariant), at 500 U/kg of dry pulp, respectively. The treatment with Pulpzyme (XP) or Cartazyme (XC) has been combined with stages of bleaching using: oxygen (O), sulfuric acid (A),
J H, de Araújo, F F, de Moraes, G M, Zanin   +2 more
openaire   +2 more sources

Contribution to On-Line Kraft Pulping Control

IFAC Proceedings Volumes, 1980
Abstract In this paper, an on-line sensor, based on ultra-violet absorption of the black liquor in a Kraft pulping process is described. The sensor, tested and improved on a 45-1iters pilot digester, appeared to be accurate and to give reproducible measurements which compared favourably with off-line ultra-violet absorption measurements. In order to
R. Capart, K. Obese-Jecty, G. Le Cardinal, M. Gélus   +3 more
openaire   +1 more source

A comparison of kraft, PS, kraft-AQ and kraft-NaBH4 pulps of Brutia pine

Bioresource Technology, 2008
The aim of this work was to study the effect of adding PS, AQ and NaBH(4) into kraft pulping with special attention given to NaBH(4). Kraft, kraft-AQ, PS, and kraft-NaBH(4) pulps were produced under the same cooking conditions and the pulps produced were compared in terms of pulp and paper properties.
Y, Copur, A, Tozluoglu
openaire   +2 more sources

High sulphidity kraft pulping

Nordic Pulp & Paper Research Journal, 2009
The object of this project was to evaluate the effect of high sulphidity on the performance of the kraft cooking process.
Leelo Olm, Disa Tormund, Fredrik Lundqvist   +2 more
openaire   +1 more source