Surface weathering and dispersibility of MC252 crude oil

被引：65

作者：

Daling, Per S. ^{[1
]}

Leirvik, Frode ^{[1
]}

Almas, Inger Kjersti ^{[1
]}

Brandvik, Per Johan ^{[1
]}

Hansen, Bjorn Henrik ^{[1
]}

Lewis, Alun ^{[2
]}

Reed, Mark ^{[1
]}

机构：

[1] SINTEF, Environm Technol, N-7465 Trondheim, Norway

[2] Alun Lewis Oil Spill Consultancy, Staines 7W18 2EG, Middx, England

来源：

MARINE POLLUTION BULLETIN | 2014年 / 87卷 / 1-2期

关键词：

Oil spill; Sea surface oil weathering MC252; Oil dispersibility; Dispersant effectiveness; Oil weathering model predictions; SPILLS; WATER; OSCAR; SEA;

D O I：

10.1016/j.marpolbul.2014.07.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Results from a comprehensive oil weathering and dispersant effectiveness study of the MC252 crude oil have been used to predict changes in oil properties due to weathering on the sea surface and to estimate the effective "time window" for dispersant application under various sea conditions. MC252 oil is a light paraffinic crude oil, for which approximately 55 wt.% will evaporate within 3-5 days when drifting on the sea. An unstable and low-viscosity water-in-oil (w/o) emulsion are formed during the first few days at the sea surface. This allows a high degree of natural dispersion when exposed to breaking wave conditions. Under calm sea conditions, a more stable and light-brown/orange colored water-in-oil (w/o) emulsion may start to form after several days, and viscosities of 10,000-15,000 mPa s can be achieved after 1-2 weeks. The "time window" for effective use of dispersants was estimated to be more than 1 week weathering at sea. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：300 / 310

页数：11

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