Chemical herding of weathered crude oils for in-situ burning

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:250

Article

Rojas-Alva, Ulises^1,2  Andersen, Bjorn Skjonning¹  Jomaas, Grunde^1,2 

[1] Tech Univ Denmark, Dept Civil Engn, Lyngby, Denmark

[2] Univ Edinburgh, BRE Ctr Fire Safety Engn, Sch Engn, Edinburgh, Midlothian, Scotland

关键词: Oil spill;    Herding;    Burning efficiency;    Regression rate;    Pollution;   

DOI  :  10.1016/j.jenvman.2019.109470

来源: Elsevier

【 摘 要 】

Mid-scale ISB experiments were conducted in a large water-basin (20 m(2) x 1 m) in order to assess the applicability of chemical herding of weathered crude oil spills on water in association with in-situ burning (ISB). A silicone-based chemical herding agent, OP-40, was used to confine, or herd, three different crude oils (Siri, Grane and Oseberg blend) at various weathering degrees. The herding agent was capable of obtaining the minimum required oil slick thickness for ignition and subsequent flame spread in most of the experiments, but not for the strongly weathered oils. Also, the herding agent was capable of re-thickening the oil slick after flame extinction. The burning efficiency results indicate that the method can be viable for ISB with herders at a larger scale, and suggest that the burning efficiency scales with the amount of crude oil. Sinking behaviour of residues was also observed and quantified, as such a behaviour can pose a serious environmental threat in real scenarios.

【 授权许可】

Free