Page 97 - Materials Chemistry, Second Edition

Ch002-P373623.qxd 3/22/07 5:27 PM Page 77

Other waste Wood chips, sawdust Wood flour Spent solvent-based adhesives Wood flour Wood chips, sawdust, adhesive and resin particles Pigment wastes Spent solvents and lacquers Spent solvents, stains, drying oils, synthetic resins, thinners, pigments (Continued)

Process waste Wood chips, sawdust Wood flour Wood flour Wood chips, sawdust, adhesive and resin particles
Summary of Process Materials Inputs and Pollution Outputs in the Wooden Furniture Industry

Air emissions Vapor, possible chemicals used in pre-treatment of raw wood Wood flour Solvent emissions Wood flour Solvent emissions Solvent emissions Solvent emissions

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