Evaluation of the efficiency of sorbents for accidental oil spill response in the Arctic waters

IF 2.4 Q2 MINING & MINERAL PROCESSING Journal of Mining Institute Pub Date : 2023-03-23 DOI:10.31897/pmi.2023.14
Janna Vasilyeva, Mikhail Vasekha, V. Tyulyaev
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Abstract

The development and operation of new oil fields on the Arctic shelf increases the risks of oil spills, which require the use of oil spill response tools and materials that are efficient in harsh climatic conditions. The question of actual efficiency of sorbents for reducing the level of oil pollution in the conditions of the Arctic and subarctic waters is relevant. The work is aimed at a comparative study of the efficiency of sorbents of mineral and organic origin used by coastal enterprises in the Kola Bay as well as a sorbent based on chitin in model systems simulating real conditions in sea waters. The characteristics of sorption agents were determined applying ASTM F716-18 procedure. Sorption capacity was evaluated in respect of ARCO grade oil, diesel fuel and marine oil. The efficiency of sorbents was estimated in model systems “sea water – oil” at water temperature corresponding to the average annual surface temperature in the Barents Sea. Actual data on sorption capacity of commercial sorbents “Lessorb”, “Novosorb”, a sorbent based on vermiculite and chitin sorbent in relation to potential pollutants of waters were obtained. The dynamics of sea water saturation with oil products at –0.5 (±1) and 10 (±1) °С was determined. It is shown that at higher temperature the concentration of oil products in sea water column (in the presence of an oil film on the surface) is on average four times higher than at low temperature. Kinetic dependences were obtained that describe the content of oil products in water column and near-surface layer of sea water in the presence of the studied sorbents at 5 (±1) °C, corresponding to the average annual temperature in the Kola Bay of the Barents Sea. A method is proposed for evaluating the efficiency of sorbents from the values of regression coefficients characterizing the dependence of oil products content in sea water on the character of sorbent and duration of its action.
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对北极水域意外溢油响应的吸附剂效率的评价
北极大陆架新油田的开发和运营增加了石油泄漏的风险,这需要使用在恶劣气候条件下有效的溢油应对工具和材料。在北极和亚北极水域的条件下,吸附剂在减少石油污染水平方面的实际效率问题是相关的。这项工作旨在比较科拉湾沿海企业使用的矿物和有机吸附剂以及基于几丁质的吸附剂在模拟海水真实条件的模型系统中的效率。采用ASTM F716-18程序测定吸附剂的特性。对ARCO级油、柴油和船用油的吸附能力进行了评价。在与巴伦支海年平均表面温度相对应的水温下,估算了“海水-油”模式系统中吸附剂的效率。获得了商用吸附剂“Lessorb”、“Novosorb”、蛭石吸附剂和几丁质吸附剂对水中潜在污染物的吸附能力的实际数据。测定了油品在-0.5(±1)°和10(±1)°С下海水饱和度的动态变化。结果表明,在较高温度下,海水柱(表面有油膜)中油品的浓度平均比低温时高4倍。在与巴伦支海科拉湾年平均温度相对应的5(±1)℃条件下,得到了描述吸附剂存在时水柱和近表层海水中油品含量的动力学依赖关系。根据海水中油品含量与吸附剂性质和作用时间关系的回归系数值,提出了一种评价吸附剂效果的方法。
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来源期刊
Journal of Mining Institute
Journal of Mining Institute MINING & MINERAL PROCESSING-
CiteScore
7.50
自引率
25.00%
发文量
62
审稿时长
8 weeks
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