جستجوی مقالات مرتبط با کلیدواژه "diesel fuel" در نشریات گروه "عمران"

Oil contamination of soil is a significant environmental issue that various countries, including Iran, have encountered. Leakage and the spread of oil contamination in different sectors of the oil industry, such as oil production areas, refineries, and transportation lines, lead to extensive soil contamination. The physicochemical processes occurring between the pollutant and the soil alter the geotechnical behavior of soil. Nanoparticles, due to their small size and filling properties, can enhance soil density and resistance. This article investigates the impact of nano-clay as a novel additive on gasoline-contaminated soils, revealing that with increasing contamination levels, both optimum moisture content and maximum dry density decrease. Moreover, higher contamination percentages result in reduced soil plasticity limits; as gasoline content increases, the Atterberg limits decrease. Hence, Therefore, in order to achieve greater soil resistance, adding different clay nanoparticles with percentages of 0.25, 0.5, 1 to the soil contaminated with diesel oil increases the amount of leaf ether and hardens the soil.

The contamination of soil by crude oil and petroleum based products has become a serious problem that represents a global concern for the potential consequences on ecosystem and human health. There are many methods for the removal of these pollutants from soils. They involve both physico-chemical and biological approaches. The oxidants widely used for soil remediation include Fenton’s reagent, ozone, and permanganate. Ozone is a very strong oxidizer (Eh = -2.07 V). Decomposition of ozone produces free radicals, such as the hydroxyl radical, which is non-selective and a more powerful oxidant than ozone itself. Moreover, ozone that has not reacted reverts back to atmospheric oxygen and therefore no toxic residues of the oxidant remain in the soil.