TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The catalyst is a water gas shift catalyst comprising an oxide of iron, copper, zinc, and/or chromium. The water gas shift catalyst comprises magnetite (Fe3O4). The catalyst comprises a spent and/or regenerated hydrotreating catalyst. The spent and/or regenerated hydrotreating catalyst comprises at least one metal from Group V1B of the Periodic Table of Elements and at least one metal from Group VIII of the Periodic Table of Elements, preferably nickel and/or cobalt and molybdenum and/or tungsten. The hydroprocessing conditions include a liquid hourly space velocity (LHSV) of 0.5-1.5 hour-1, a temperature of 600-650 degrees F (316-343 degrees C), and a hydrogen partial pressure of 10-200 psig (69 kPag-1.4 MPag). The hydrogen partial pressure is at least 40 psig (280 kPag). The hydroisomerization catalyst comprises a molecular sieve having a silicon dioxide:aluminum oxide ratio of 100 or less, and a metal oxide binder, and the dewaxing catalyst has a ratio of zeolite surface area to external surface area of at least 80:100. The molecular sieve is EU-1, zeolite beta, ZSM-35, ZSM- 11, ZSM-57, NU-87, ZSM-22, EU-2, EU-11, ZBM-30, ZSM-48, and/or ZSM-23, the metal oxide binder in powder form has a surface area of 100 m2/g or less, the metal oxide binder comprises at least one of silica, alumina, titania, and zirconia, and the hydroisomerization catalyst also comprises a promoter metal comprising the metals of Group VIII of the Periodic Table of Elements. The vapor effluent is used as a refinery fuel gas.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The biocomponent portion is reacted in the presence of an additional hydrogen containing stream. The method comprises introducing the feedstock into the reactor in a counter-current manner relative to the treated refinery stream. The method further comprises: hydroisomerizing the diesel boiling range product; and mixing the diesel boiling range product with a mineral feed and hydrotreating the mixed feed under effective hydrotreating conditions. EXAMPLE - Hydrotreated mineral atmospheric distillate oil (70 wt.%) was added to soybean oil (30 wt.%) to form a mixed feed. The mixed feed was contacted in a hydroprocessing reactor with a treat gas comprising hydrogen (40 mol.%) and methane (60 mol.%) in the presence of a supported (alumina) nickel molybdenum hydrotreating catalyst at 625 degrees F and a pressure of 200 psig. The treat gas was introduced at a rate of 2250 standard cubic feet of gas per barrel of oil (scf/bbl), which corresponded to an equivalent hydrogen treat gas rate of 900 scf/bbl, a hydrogen partial pressure of 60-80 psig and an liquid hourly space velocity of 1 hour-1 to give a hydrotreated product (yield 95 wt.%) comprising finished sulfur content of 3 weight part per million (wppm) or less and a finished nitrogen content of 2 wppm or less and exhibiting an American petroleum institute (API) gravity of 34.9 degrees .