Plastics reusing disposable plastic container

An additional factor must also be considered. How do laminates compare with other competitive materials (such as glass, metal and plastic containers) in terms of disposal, pollution, reuse and conservation of the earth s natural resources There is no doubt that combinations of plastic, cellulose, foil, etc. do present a disposal problem and although two of these can be incinerated, the economics of recovering the foil is relatively poor. The overall economics of using laminates can be compared... 

Samples should be collected aseptically in nonpyrogenic containers. Reused depyrogenate glassware or sterile, disposable polystyrene plastics are recommended to minimize adsorption of endotoxin. 

Spills of ammonia present two hazards. Laboratory workers may slip in the spill or be overcome by the vapors, especially if the ammonia is a concentrated solution. Thus, the worker handling the spill should wear breathing apparatus and other people should remain a safe distance away. The spill is covered with sufficient spill mix to absorb all of the liquid and maintain a dry layer of spill mix on top. The mixture is scooped into a container and transported to the fume hood. In the fume hood it is slowly added to a plastic pail of cold water. The liquid is neutralized by the addition, with stirring, of either solid sodium bisulfate or 5% aqueous hydrochloric acid. The aqueous solution is decanted into the drain and the solid, sand/bentonite, disposed as normal garbage or washed with water, dried, and reused... 

For higher volume applications or continuous operations like applications at car manufacturers or in the building and construction industry, the adhesive is applied out of pails or drums. Typical pails contain about 25-50 1 of material and drums about 200 1. It is recommended to use plastic inliners to avoid a pollution of the drum or pail. In this case, the drum or pail can be reused and just the plastic bag needs to be disposed. O Figure 37.18 shows a typically used pail with a plastic inliner. 

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