Abstract CaCO 3 -pulp composite was prepared via precipitation of calcium hydroxide in the presence pulp. In order to investigate selectivity and mechanism, substrate pulps obtained composites were fractionated (R30, R100, R200, R400 a sedimented fraction that passed 400 mesh wire) using Bauer-McNett unit. The main fractionation criterion therefore fiber length. pulp used CTMP (chemithermomecha...

Recycling and deinking processes cause fiber damage because of hornification phenomena and increased external fibrillation. Mechanical refining has been used for many years to enhance the mechanical properties of paper. Biorefining of pulp using enzymes is receiving increasing interest for energy reduction at the refining step of the papermaking process. Moreover, enzymes have also been used fo...

Article Type: Full Length Research Article This research highlighted the production of cellulase enzyme from isolated fungal strains and used this enzyme as potential refining agent in manufacturing security paper from cotton comber pulp. Twenty three fungal strains were isolated from soil samples collected from nearby wood based paper mill and screened for cellulolytic activity by Congo red pl...

this study was devoted to the development of pulp luffa cclindrica and its characterization paper (annual plant fiber of the family cucurbitaceae). baking at soda helps to achieve a high level of delignification (kappa ≤ 10) and high yield (≈ 67%).the beatability stack valley is comparable to refined wood fibers, the fibers develop a normally time with good hydrophilic properties without excess...

Pulp properties are key factors to assessing the performance of a refining process, evaluating operational conditions, and optimizing the process of stock preparation. This paper presents a data-driven approach to estimate the beating degree and wet weight of pulp after refining using case-based reasoning (CBR). Historical data generated in a refining process at a paper mill was used to evaluat...

The adsorption of cellulases onto fibers may be one of the most important factors affecting the enzymatic reaction between cellulases and fibers. This study investigated the adsorption kinetics involved, using isothermal adsorption equations. Cellulose binding domains (CBDs) were isolated from a commercial cellulase, and their role in the adsorption and enzymatic reaction was evaluated. Approxi...

Optimization and control of the pulp and paper making processes for cost-effective production requires more frequent monitoring of the relevant pulp and stock preparation quality parameters. A new quality monitoring system for pulping and stock preparation is developed. The new online L&W Pulp Tester is a complete wet laboratory with automatic sampling from different positions along the process...

The mechanical and hydrodynamic phenomena occurring in the refining zones of disc refiners cause fibres to undergo fibrillation. This paper presents a study changes during fibre fibrillation as expressed terms index when pulp with 10%, 15%, 20% consistency. influences tangential force circular bar straight on were compared. are shown depend angle between tangent cutting edge radius from centre ...