Abstract: Oil-soluble nickel, cobalt, or copper-containing additives are blended with a hydrocarbon feedstock containing arsenic, and the resulting solution is heated to at least 300.degree. F to convert a large proportion of the arsenic to forms removable by conventional filtration or desalting techniques. Preferably, the feedstock-additive solution is heated to at least 500.degree. F and is then distilled so as to produce one or more distillate fractions consisting of components that boil at atmospheric pressure at temperatures in the range 400.degree.-900.degree. F; such distillate fractions will contain arsenic in a concentration less that 20% of that of the feedstock.

Abstract: A process for removing arsenic from a mineral oil feedstock containing at least 2 ppmw arsenic comprises contacting said feedstock at elevated temperatures with a catalytic absorbent comprising a nickel sulfide and a molybdenum sulfide composited with a refractory oxide, said nickel sulfide and said refractory oxide each being present in relatively large proportions. Under preferred conditions a product oil stream containing less than 2 ppmw arsenic is continuously obtained from said contacting until a weight of arsenic at least equivalent to that of the nickel in the catalytic absorbent has been absorbed thereon.

Abstract: Arsenic containing fuel compositions are disclosed that will, upon combustion, leave an ash that retains substantial proportions of said arsenic, thereby reducing its dissemination into the atmosphere. This result is obtained by adding to the fuel small amounts of a Mg, Ba, Zn, or Ni component. Also disclosed are certain fuel compositions containing both Mg and Zn additives that produce an ash containing arsenic in an essentially insoluble form.