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- W2801634905 abstract "Several chemically and thermally modified activated carbons were tested in the adsorption of a lipophilic pollutant (Sudan IV) contained in biphasic oil-water mixture mimicking petroleum refinery effluents. The effect of different parameters on the adsorption performance has been assessed, such as the absence of water, particle size of the carbon material and the respective chemical and thermal modifications, initial concentration of pollutant, water/oil volume ratio, nature of the organic phase (cyclohexane, n-hexane or n-hexadecane) and the presence of an emulsifier (sodium dodecyl sulphate). Lipophilicity of the adsorbent was found to be a key parameter in the purification of the organic phase. Successive treatments of the parent commercial activated carbon Norit ROX 0.8, namely with nitric acid, urea, followed by a thermal treatment at 800 °C under inert atmosphere, developed the highest adsorption capacity (qe = 200 mg·g−1) in the base material. A load of 2.5 g·L−1 of this modified carbon was able to completely remove 500 mg·L−1 of the pollutant from the organic phase after 8 h of contact time, owing to the highest specific surface area (SBET = 1055 m2·g−1) and characteristic surface chemistry with the lowest content of oxygen surface groups among the tested adsorbents." @default.
- W2801634905 created "2018-05-17" @default.
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- W2801634905 date "2018-09-01" @default.
- W2801634905 modified "2023-10-04" @default.
- W2801634905 title "Removal of Sudan IV from a simulated biphasic oily wastewater by using lipophilic carbon adsorbents" @default.
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- W2801634905 doi "https://doi.org/10.1016/j.cej.2018.04.105" @default.
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