TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: In process (I): the contact with the source of steam occurs at a pressure of 0-35 psi for 1 second to 30 minutes; the ratio of oxidizing agent to the grease waste mixture is 10-1000 wt/wt.%; and the contact with the oxidizing agent is conducted at 25-75 degrees C. The process (II) further comprises de-emulsifying the separated lipid component by centrifugation. In process (II): the source of brown grease is pre-heated by a heat exchanger prior to introduction into the metal pipeline, or screened or filtered prior to introduction into the metal pipeline; the pH of the source of brown grease is adjusted by introduction of an acid or a base; the separating occurs in the presence of a non-polar solvent comprising alkane, a substituted alkane, a cycloalkane and/or an acylglycerol, in a separation tank having a first discharge for the aqueous and solid components of the source of brown grease, and a second discharge for the lipid component comprising the reclaimed brown grease; and the source of brown grease or the reclaimed brown grease is contacted with a source of steam at 100-160 degrees C and/or an oxidizing agent so that the grease waste mixture or the reclaimed brown grease is substantially deodorized. In process (III), the contacting step is conducted at 25-120 degrees C, preferably at 60 degrees C. Preferred Components: The oxidizing agent is hydrogen peroxide, sodium carbonate peroxide, sodium dichloroisocyanurate, sodium hypochlorite, sodium perborate and/or sodium peroxide. The insoluble base is a metal oxide, metal hydroxide and/or metal silicate, preferably calcium oxide, where the ratio of insoluble base to the crude biodiesel solution is 0.1-30 wt/wt.%, preferably 1 wt/wt.%. The esterification catalyst includes sulfuric acid, hydrochloric acid, titanium chloride, zirconium chloride, ferric chloride, sulfonated polymer resin or metal immobilized on a solid support. The transesterification catalyst is sodium hydroxide, potassium hydroxide, sodium methoxide, potassium methoxide, triethylamine or N-heterocyclic carbine. The insoluble metal oxide is aluminum oxide, calcium oxide, magnesium oxide and/or its derivatives. The metal hydroxide is aluminum hydroxide, calcium hydroxide, magnesium hydroxide and/or its derivatives. The insoluble metal silicate is aluminum silicate, calcium silicate, magnesium silicate and/or its derivatives.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The biodiesel solution comprises less than 15 ppm of sulfur and has an acid number of less than 0.5 mg potassium hydroxide/g. The alcohol is 1-10C alcohol, where the ratio of the alcohol to the lipid mixture is 1-2000 wt/wt.%. Preferred Method: In process (IV): the ratio of the esterification catalyst to the lipid mixture is 0.1-60 wt/wt.%; and step (a5) is conducted at 25-200 degrees C. In process (IV): the step (a3) is repeated until the biodiesel solution comprises less than 15 ppm of sulfur and has an acid number of less than 0.5 mg potassium hydroxide/g; the ratio of the insoluble metal oxide, insoluble metal hydroxide and/or insoluble metal silicate to the crude biodiesel solution is 0.1-30 wt.%; and the step (a3) is conducted at 25-120 degrees C. The process (IV) further comprises contacting the biodiesel solution with the alcohol in the presence of a transesterification catalyst to form a biodiesel solution having reduced levels of glycerides, where the ratio of the transesterification catalyst to the biodiesel solution is 0.1-60 wt/wt.%, and contacting occurs at 15-75 degrees C. EXAMPLE - No suitable example given.