Abstract:

Louisiana crude oil was added to salt water (34 ppt) along with additions of dispersant (Corexit 9500A) and/or granular materials (limestone or quartz). For each treatment, there was a specific order of addition for each component. Treatments included oil only, oil then dispersant, oil then dispersant then sediment, sediment then oil then dispersant, oil then sediment then dispersant, and oil then sediment. This dataset reports the ratios of oil concentration found floating, captured by sediments, and dispersed in water after each treatment.

Suggested Citation:

D. Boglaienko, B. Tansel. 2016. Dataset for: Partitioning of fresh crude oil between floating, dispersed and sediment phases: Effect of exposure order to dispersant and granular materials. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N73776RR

Publications:

Boglaienko, D., & Tansel, B. (2016). Partitioning of fresh crude oil between floating, dispersed and sediment phases: Effect of exposure order to dispersant and granular materials. Journal of Environmental Management, 175, 40–45. doi:10.1016/j.jenvman.2016.03.017

Purpose:

We performed lab experiments to quantify the partitioning of floating crude oil and the effectiveness of the dispersant in relation to the exposure order of crude oil, granular materials, and dispersant (Corexit 9500)

Data Parameters and Units:

Partition coefficient (oil concentration ratio) Float/Water, Sediment/Water, Float/Sediment (w/w) Treatments: (the following treatments include the order in which each element was added to the mixture, S refers to either Limestone or Quartz) O = oil only (100 mL saltwater + 0.5 mL) OD = oil + dispersant (100 mL saltwater + 0.5 mL oil + 0.02 mL dispersant) ODS = oil + dispersant + granular material (100 mL saltwater + 0.5 mL oil + 0.02 mL dispersant + 1 g granular material) SOD = granular material + oil + dispersant (100 mL saltwater + 1 g granular material + 0.5 mL oil + 0.02 mL dispersant) OSD = oil + granular material + dispersant (100 mL saltwater + 0.5 mL oil + 1 g granular material + 0.02 mL dispersant) OS = oil + granular material (100 mL saltwater + 0.5 mL oil + 1 g granular material)

Methods:

Limestone particles (2.00-0.300 mm) and Quartz sand (0.300-0.075 mm). For oil concentration in sediments, sediments were filtered (fiberglass filter) and weighed. For oil concentrations in water, 5 mL of dichloromethane (DCM) was added to 30 mL of experimental liquid which was then shaken and drained (this process was repeated 3 times). A UV spectrophotometer (calibrated 400-420 nm) was used to calculate the mass of dispersed oil (mean of measured levels was used). Ratios of floating oil were calculated using the amount of oil dispersed and captured by granular material.

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