نتایج جستجو برای: deinking

تعداد نتایج: 157  

2003
J. BOUCHARD M. DOUEK

Changes in the physical properties of pulp during recycling are sometimes reported to be caused by changes in chemical properties offibres. In order to determine the relationship, if any, between physical and chemical properties, a chemical characterization was carried out of several recycled pulps. Measurements of carbohydrates, lignin, crystallinity index, and DP of cellulose were carried out...

2007
RUBEN MIRANDA

The study evaluates stickies removal efficiency of the different process stages in a deinking line of a newsprint paper mill, using 100% recovered paper as raw material. Two different situations have been considered, namely, a normal one, with a low level of stickies at the beginning of the line, and a critical situation with a high level of stickies. Removal efficiencies have been compared wit...

Journal: :Bioresources 2021

Enzyme cocktails can alter the lignin and hemicellulose content in wood cell walls, improving bleaching process during pulp production offsetting need for toxic chemicals. In this study, brown was biobleached with a mixture of crude fungal extracts rich xylanase laccase, respectively produced from Aspergillus tamarii Kita Trametes versicolor on waste materials. The optimal conditions biobleachi...

Journal: :International Journal of Chemical Engineering 2017

Journal: :International Journal for Research in Applied Science and Engineering Technology 2018

Journal: :Waste and Biomass Valorization 2022

The study reports on the preparation of nanocrystalline cellulose from waste papers (WPNCC), as an environmental friendly approach source material and investigation their effects morphological, mechanical barrier properties Hydroxypropyl methylcellulose/Cationic starch (HPMC/CS) nanocomposites. HCl hydrolysis followed by alkali treatment deinking fibers resulted in production WPNCC. Also, HPMC/...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید