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- W3173462608 abstract "Heavy crude oil contaminated Soil, in addition to affecting the lives of plants and animals, also endangers aquatic life. These metals are in the process of extraction of crude oil into the soil and thus have destructive effects on the environment itself. In this research, removal of heavy metals lead, nickel and chromium from crude oil contaminated soil using saponin biosurfactant was investigated. The results showed that by increasing the concentration of saponin, the percentage of removal of metals increased. So in the concentration of 3 g/l of saponin, the removal efficiency of nickel, chromium and lead was 73%, 58% and 43%, respectively. Also, increasing pH to 10 and temperature to 75 °C had a negative effect on the removal efficiency of metals. The results also showed that optimum conditions for removal of nickel, chromium and lead metals were at temperature of 25°C, pH equal to 4 and saponin biosurfactant concentration of 3g/l. Compared to the SDS chemical surfactant, in optimal conditions and in the large mesh (850 µm), the saponin yield was higher than SDS in Ni and Cr. Therefore, according to the results of this study, biological surfactants can be used instead of chemical surfactants from the environmental point of view" @default.
- W3173462608 created "2021-07-05" @default.
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- W3173462608 date "2019-08-11" @default.
- W3173462608 modified "2023-09-23" @default.
- W3173462608 title "Removal of Nickel, Chromium and Lead from crude oil contaminated soils using saponin biosurfactan" @default.
- W3173462608 hasPublicationYear "2019" @default.
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