Page 96 - Materials Chemistry, Second Edition

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Summary of Process Materials Inputs and Pollution Outputs in the Wooden Furniture Industry
Air emissions Other waste Process waste Vapor, possible chemicals used in pre-treatment of raw wood Wood chips, sawdust Wood chips, sawdust Wood flour Wood flour Wood flour Spent solvent-based Solvent emissions adhesives Wood flour Wood flour Wood flour Wood chips, sawdust, Wood chips, sawdust, adhesive and resin adhesive and resin particles particles Pigment wastes

Material input Raw wood Dried wood Wood Hot melts, polyvinyl acetate, solvent- based adhesives Assembled furniture Assembled furniture, water, adhesives, resins Mineral spirits, alcohol, solvents, pigments Nitrocellulose-based lacquers Calcium carbonate, silica, pigment

TABLE 2.33 Process Drying Drying kilns Machining Sawing/Planing Sanding Assembly Gluing/Veneer application Sanding Pre-finishing Watering/Sanding Finishing Staining Wash coating Filling