In mid-1974 and mid-1976, two U.S. Environmental Protection Agency (EPA) regulatory events occurred which led to a large research effort designed to evaluate the toxicity of textile plant wastewaters, and to
The equilibrium desorption moisture contents of air-cured (burley and Maryland), heatcured (bright), and sun-cured (Turkish) tobaccos have been determined over a temperature range of 80°to 140°C. and a relative humidity range of 10 to 80%. The isosteric net heats of desorption varied from about 9000 to 16,000 B.t.u. per pound-mole in the region of 1% moisture to about 700 to 1 800 B.t.u. per pound-mole in the 20% moisture region, depending on the type of tobacco. Apparatus and procedure are described which permit rapid isosteric (constant moisture content) determination on materials, such as tobacco, which are easily damaged by prolonged contact with excessive moisture or heat.
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