Reduction of Greenhouse Gases by Fiber-Loaded Lightweight, High-Opacity Newsprint production

摘要

We estimated the effectiveness of fiber loading in reducing greenhouse gas emissions for producing lightweight high-opacity newsprint. Fiber loading enhances fiber bonding at increasesd precipitated calcium carbonate levels without isgnificant loss in Canadian Standard Freeness or additional energy use. We investigated the reduction of greenhouse gas emissions for a hypothetical 600 metric ton/day newsprint mill. the energy reductions responsible for the reduction in greenhouse gases were due to substituting more readily dewatered fiber-loaded precipitated calcium carbonate for fiber, reducing grmmage, and reducing the energyneeded for processing fiber. This was offset by the energy needed for operating the fiber loading equipment. Assuming that a 4-g/m sup 2 reduction in grammage and a 6