Glycerol and spent lye clarification - Illinois Institute of Technology
Glycerol and spent lye clarification - Illinois Institute of Technology
Glycerol and spent lye clarification - Illinois Institute of Technology
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Introduction.<br />
In the general advance <strong>of</strong> technical<br />
knowledge <strong>and</strong> research during the last century<br />
the soap industry has not remained stationary.<br />
About 1823 Ohevreul published his researches<br />
on the constitution <strong>of</strong> fats, showing that<br />
instead <strong>of</strong> consisting <strong>of</strong> a single substance<br />
they were composed <strong>of</strong> fatty acids in combin-<br />
ation with a base, glycerol, <strong>and</strong> that glycerol<br />
was contained in the waste liquors <strong>of</strong> the soap<br />
<strong>and</strong> c<strong>and</strong>le factories.<br />
When the remarkable properties <strong>of</strong> glycer-<br />
ol, such as its permanence <strong>and</strong> non-volatility<br />
at ordinary temperatures. Its s<strong>of</strong>tening effects<br />
on the skin <strong>and</strong> the value in cosmetic prepar-<br />
ations, its oily nature combined with its mis-<br />
cibility with water <strong>and</strong> alcohol, its enormous<br />
solvent powers, its sweet etnd agreeable taste<br />
<strong>and</strong> finally its value as a base for the most<br />
valuble <strong>of</strong> all explosives, nitroglycerine euid<br />
dynamite, which are not known in any other one<br />
substance, became known manufacturers began to
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