Open AccessThe Fractionation of Loblolly Pine Woodchips Into Pulp For Making Paper Products
Author(s) -
PhD Kiran Kadam
Publication year - 2006
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/896388
Subject(s) - kraft process , pulp and paper industry , pulp (tooth) , kraft paper , fractionation , loblolly pine , raw material , kappa number , lignin , environmental science , chemistry , biomass (ecology) , waste management , botany , pinus <genus> , engineering , agronomy , chromatography , organic chemistry , medicine , pathology , biology
The overall goal of the project was to test the PureVision biomass fractionation technology for making pulp from loblolly pine. A specific goal was to produce a pulp product that is comparable to pulp produced from the kraft process, while reducing the environmental effects of the kraft process, known to be a highly pollutant process. The overall goal of the project was met by using the biomass fractionation concept for making pulp product. This proof-of-concept study, done with Southern pine pinchips as feedstock, evaluated NaOH concentration and residence time as variables in single-stage cocurrent pulping process. It can be concluded that 1% NaOH is adequate for effective delignification using the PureVision process; this is about ⅓ of that used in the kraft process. Also, the PureVision process does not use sulfur-based chemicals such as N2S and hence, is environmentally more benign
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