The process of oil reproducing in the refinery considered as one of the largest industrial facilities responsible for the emission of many pollutants into the air and works to pollute the air surrounding the refinery. Hydrocarbons are among the most important pollutants emitted into the air from oil recycling operations and should be studied to reduce the proportions of hazardous pollutants. As the pollution caused by the burning of fuel in the chimneys of the refinery Dora is a dangerous contaminant to the environment, where the exposure of substances and pollutants that lead to disruption of the balance of the natural elements of the atmosphere and thus harmful to human and sustainability. The aim of this study is to study the concentration of hydrocarbon contaminants that cause air pollution caused by stacks of fireplaces in Doura refinery. The rates of the most dangerous contaminants on the human respiratory system, which cause dry cough, bronchitis, chest pain and shortness of breath, were studied as a study of carbon, sulfur and nitrogen oxides. In this research, a large number of analyzes, tests and certification were carried out on periodic tests provided by the Doura refinery after repeated field visits to examine concentrations of contaminants present in the atmosphere. Where the maximum distance of pollutant concentration from the source was found, as well as a comprehensive study of an integrated set of weather conditions such as wind speed and climate effects to preserve and sustain the environment.

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Iraqi soil contamination greatly influenced soil detachment. Previous researchers have not been able to predict the influence of crude oil soil contamination on either the mechanistic dimensional detachment parameter b0 or the threshold parameter b1 of the mechanistic detachment model (Wilson model). The aims of this research were (1) to investigate the influence of crude oil on deriving Wilson model parameters, b0 and b1, with two setups at different scales and different soil moisture contents and (2) to predict b0 and b1 in crude oil contaminated dry soils with varying levels of contamination. The “mini” JET apparatus was implemented under laboratory conditions for soil specimens packed at both a small (standard mold) and a large (in-situ soil box) scale. The results showed an inverse correlation between b0 and water content for clean soil. No correlation between b0 and soil moisture content was observed for contaminated soils. There was a huge reduction in the b0 value as the contamination time increased compared to the clean soil. This was related to the role crude oil plays in soil stabilization. Crude oil contamination significantly increased lead contamination level while slightly increasing the pH and total organic carbon. The influence of crude oil on mechanistic soil detachment can be predicted with a priori JET experiments on soils without crude oil based on crude oil parameters.