World Journal of Environmental Research

Yazarlar: Ilias Konstantinou, Dimitrios Sidiras

Konular:-

Anahtar Kelimeler:Adsorbent,Autohydrolysis,Oil spill,Wheat straw.

Özet: This work deals with modified wheat straw’s oil adsorptivity in the case of oil spills on freshwater (e.g. lake water or stream water) after the use of chemical dispersant. Wheat straw, a common lignocellulosic agricultural residue, was used to obtain low cost adsorbents for diminishing an oil-products spill. The adsorbent was modified by autohydrolysis, i.e. without the use of any chemical catalyst, in a PARR autoclave at 160-240oC for 0 and 50min isothermal time period. The oil adsorbency tests were performed, using diesel and crude oil of predetermined quality specifications with the presence of chemical dispersant. In the case of diesel oil spill (DOS), Water Adsorbency, Diesel oil Adsorbency and Total Adsorbency values were found to increase to a maximum of 3g/g, 5g/g and 8g/g, respectively, at 200°C for isothermal reaction time 0min (preheating period 66min). Relative Diesel oil Adsorbency value was found to increase to a maximum of 93% at 240°C for isothermal reaction time 50min (preheating period 80min). In the case of crude oil spill (COS), Water Adsorbency value was found to increase to a maximum of 2g/g at 180°C for isothermal reaction time 0min (preheating period 47min). Crude oil Adsorbency and Total Adsorbency values were found to increase to a maximum of 7g/g and 9g/g, respectively, at 200°C for isothermal reaction time 0min. Relative Crude oil Adsorbency value was found to increase to a maximum of 94% at 240°C for isothermal reaction time 50min.

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