Show soap byo products tho methods pursued by glatz and lugo for so successfully extracting glycerin and soda from soap lye is described in the electrical koniow tho soap lyo which is left in alie manufacture of soap represents of course a product aud abo process in question enables glycerin and caustic eoda to be removed froin this soap lyo by means of electrolysis tro lysis the agodo is a plate of zino or carbon in contact with alio liquor under treatment i abo cathode is in a porous pot alio current decomposes tho caus tio soda forming sodium hydrate at the cathode the glycerin is set free while the and coloring matters are rendered insoluble and aro easily removed ly nitration after this treatment the insoluble matter is separated out and tho liquid is distilled forming a perfectly pure clear glycerin tho caustic soda being also practically puro and usable by the |