TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process further (A) comprises: removing at least a portion of the hydrogen from the branched paraffin-rich stream prior to combining the branched paraffin-rich stream and the gaseous stream; recycling the hydrogen removed from the branched paraffin-rich stream to the hot high pressure hydrogen stripper; separating at least carbon dioxide from the gaseous component and recycling the carbon dioxide depleted gaseous component to the first reaction zone; separating the liquid hydrocarbon component into an LPG and naphtha stream and a diesel boiling range stream and separating the LPG and naphtha stream into an LPG stream and a naphtha stream; introducing a make up hydrogen stream to the hot high pressure hydrogen stripper; and treating a petroleum derived hydrocarbon in the first reaction zone with the renewable feedstock. In the process (A): the first portion of the remainder stream comprising a least the n-paraffins is recycled to the first reaction zone at a volume ratio of recycle to feedstock of 2:1-8:1; the reaction conditions in the first reaction zone include a temperature of 40-400 degrees C, and a pressure of 689-13790 kPa absolute; the isomerization conditions in the second reaction zone include a temperature of 40-400 degrees C and a pressure of 689-13790 kPa absolute; the hot high pressure hydrogen stripper is operated at 40-300 degrees C and a pressure of 689-13790 kPa absolute; the second reaction zone is operated at a pressure at least 345 kPa absolute greater than that of the first reaction zone. In the process (B): the first portion of the remainder stream comprising a least the n-paraffins is recycled to the first reaction zone at a volume ratio of recycle to feedstock in the range of about 2:1 to about 8:1; the reaction conditions in the first reaction zone include a temperature of 40-400 degrees C and a pressure of 689-13790 kPa absolute; and the second reaction zone is operated at a pressure of at least 345 kPa absolute greater than that of the first reaction zone. The process (B) further comprises treating a petroleum derived hydrocarbon in the first reaction zone with the renewable feedstock. Preferred Components: The renewable feedstock comprises at least one of canola oil, maize oil, soy oil, rapeseed oil, soybean oil, colza oil, tall oil, sunflower oil, hempseed oil, olive oil, linseed oil, coconut oil, castor oil, peanut oil, palm oil, mustard oil, cottonseed oil, inedible tallow, yellow or brown greases, lard, train oil, fats in milk, fish oil, algal oil, sewage sludge, ratanjoy oil, wild castor oil, jangli erandi oil, mohuwa oil, karanji honge oil, and/or neem oil. The renewable feedstock further comprises at least one co-feed component including spent motor oils, spent industrial lubricants, used paraffin waxes, liquids derived from the gasification of coal followed by a downstream liquefaction step, liquids derived from the gasification of biomass followed by a downstream liquefaction step, liquids derived from the gasification of natural gas followed by a downstream liquefaction step, liquids derived from depolymerization of waste plastics, and/or synthetic oils.