منابع مشابه
US Newsprint Demand Forecasts to 2020
The paper provides projections for US newsprint demand up to 2020. First, various specifications of the standard model used in forest product demand literature, which we call the classical model, were estimated using annual data from 1971–2000. The results indicated that structural change in the newsprint consumption pattern took place at the end of the 1980s. The classical model fails to expla...
متن کاملCombined Enzymatic and Physical Deinking Methodology for Efficient Eco-Friendly Recycling of Old Newsprint
BACKGROUND The development in the deinking process has made recycled fiber a major part of the raw material for pulp and paper industry. Enzymes have revolutionized the deinking process obtaining brightness levels surpassing conventional deinking processes. This study explores the deinking efficiencies of bacterial alkalophilic laccase (L) and xylanase (X) enzymes along with physical deinking m...
متن کاملChemical changes during anaerobic decomposition of hardwood, softwood, and old newsprint under mesophilic and thermophilic conditions.
The anaerobic decomposition of plant biomass is an important aspect of global organic carbon cycling. While the anaerobic metabolism of cellulose and hemicelluloses to methane and carbon dioxide are well-understood, evidence for the initial stages of lignin decomposition is fragmentary. The objective of this study was to look for evidence of chemical transformations of lignin in woody tissues [...
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ژورنال
عنوان ژورنال: JAPAN TAPPI JOURNAL
سال: 1999
ISSN: 0022-815X,1881-1000
DOI: 10.2524/jtappij.53.894