Toxic waste disposal

An attractive feature of using the solvent as an agent to control propagation in solution polymerization is that solvents when used are usually present in very large excess in relation to any radical species. Of course, economic, solubility, toxicity, waste disposal, and other considerations limit the range of solvents that can be employed in an industrial polymerization process. 

Fox, M.A. Photoinduced Electron Transfer in Arranged Media. 159, 67-102 (1991). Freeman, P.K., and Hatlevig, S.A. The Photochemistry of Polyhalocompounds, Dehalogenation by Photoinduced Electron Transfer, New Methods of Toxic Waste Disposal. 168, 47-91 (1993). 

Caution. Compounds of thallium are toxic. This procedure should be carried out in a well-ventilated hood protective gloves should be worn to avoid any contact with thallium compounds. Residues containing thallium compounds must be disposed of in accordance to toxic waste disposal procedures. 

The Photochemistry of Polyhalocompounds, Dehalogenation by Photoinduced Electron Transfer, New Methods of Toxic Waste Disposal... 

Recent work on the mechanisms of the photohydrodehalogenation of haloarenes, with an emphasis on polyhaloarenes, and the related mechanisms of phototransformations of aliphatic halocom-pounds are reviewed. Attention is focused on the nature of the excimer in the photochemical transformations of haloarenes without additional electron transfer reagent and on the nature of the exciplex formed in phototransformations in the presence of electron transfer reagent. Applications of surface catalyzed photochemical transformations and photohydrodehalogenation of polyhaloarenes to toxic waste disposal is discussed. 

The removal and destruction of obsolete pesticides is an expensive process. The cost of toxic-waste disposal, and the procedures to be employed, depend on a number of parameters, such as the quantity and type of waste, the type of packaging, the location where the waste is stored and the infrastructure, as well as the method of disposal. After all, it costs between US 2,500 and 4,500 per tonne to return waste to an industrialised country. The above figures cover the cost of everything from stocktaking to final incineration. 

Winograd, I. J., and Szabo, B. J., 1988, Water-table decline in the south-central Great Basin during the Quaternary period—implications for toxic waste disposal, in Geologic and Hydro-logic Investigations of a Potential Nuclear Waste Disposal Site at Yucca Mountain, U.S. Geol. Surv. Bulletin 1790, pp. 147-152. 

A novel process for toxic waste handling is suggested in U.S. 4,764,282 (to Uniroyal Goodrich Tire Company). A waste liquid is soaked up into ground tire rubber to form a stable solid that can be transported with reduced risk of spillage. The resulting product can then be incinerated in a fluidized bed combustor, similar to the fluidized bed combustors used in coal-fired power stations. Estimate the cost of waste disposal via this route, allowing for a credit for the electricity produced. How does this compare to the cost of toxic waste disposal by conventional incineration ... 

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