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Stabilization of Bilgewater Emulsions by Shipboard Oils
ACS ES&T Water ( IF 4.8 ) Pub Date : 2021-07-14 , DOI: 10.1021/acsestwater.1c00102
Jared Church 1 , Grant C. Daniels 2 , Jeffrey G. Lundin 2 , Woo Hyoung Lee 3 , Danielle Paynter 1
Affiliation  

The removal of oil from bilgewater is necessary for compliance with national and international maritime regulations; however, the formation of stable oil-in-water emulsions makes oil separation difficult. Therefore, it is necessary to understand the physical and chemical properties of emulsions created in bilgewater. Recent experiments have demonstrated that synthetic bilgewater emulsions can be stabilized in the absence of surfactants or cleaners. Consequently, the objective of this study was to determine if compounds found in fuels and lubricating oils can significantly contribute to bilgewater emulsion stability. Surface tension, conductivity, emulsion stability, and GC-MS measurements were conducted to determine transportation of oil additives into the aqueous phase. Results revealed that small polar compounds in common shipboard fuels and lubricants were capable of migrating from the oil phase to the aqueous phase. In particular, it was found that oxygenated alkanes and monoaromatic compounds are likely responsible for the stabilization of bilgewater emulsions. These compounds were found in the highest concentrations in diesel fuel and were found to stabilize simulated bilgewater emulsions more than lubricating oils. Overall, this work shows shipboard oils can contribute to the stabilization of bilgewater emulsions, and further research is needed to determine the full impact of these additives.

中文翻译:

船用油对 Bilgewater 乳液的稳定性

为了遵守国家和国际海事法规,必须从舱底水中去除油类;然而,稳定的水包油乳液的形成使油分离变得困难。因此,有必要了解在舱底水中形成的乳液的物理和化学特性。最近的实验表明,合成舱底水乳液可以在没有表面活性剂或清洁剂的情况下稳定。因此,本研究的目的是确定燃料和润滑油中发现的化合物是否能显着提高舱底水乳液的稳定性。进行表面张力、电导率、乳液稳定性和 GC-MS 测量以确定油添加剂向水相的运输。结果表明,普通船用燃料和润滑剂中的小极性化合物能够从油相迁移到水相。特别是,发现含氧烷烃和单芳族化合物可能是稳定舱底水乳液的原因。这些化合物在柴油燃料中的浓度最高,并且比润滑油更能稳定模拟舱底水乳液。总体而言,这项工作表明船用油有助于稳定舱底水乳液,需要进一步研究以确定这些添加剂的全面影响。发现氧化烷烃和单芳族化合物可能是稳定舱底水乳液的原因。这些化合物在柴油燃料中的浓度最高,并且比润滑油更能稳定模拟舱底水乳液。总体而言,这项工作表明船用油有助于稳定舱底水乳液,需要进一步研究以确定这些添加剂的全面影响。发现氧化烷烃和单芳族化合物可能是稳定舱底水乳液的原因。这些化合物在柴油燃料中的浓度最高,并且比润滑油更能稳定模拟舱底水乳液。总体而言,这项工作表明船用油有助于稳定舱底水乳液,需要进一步研究以确定这些添加剂的全面影响。
更新日期:2021-08-13
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