A predictive method for crude oil volatile organic compounds emission from soil: evaporation and diffusion behavior investigation of binary gas mixtures

Abstract

Due to their mobility and toxicity, crude oil volatile organic compounds (VOCs) are representative components for oil pipeline contaminated sites detection. Therefore, contaminated location risk assessment, with airborne light detection and ranging (LIDAR) survey, in particular, requires ground-based determinative methods for oil VOCs, the interaction between oil VOCs and soil, and information on how they diffuse from underground into atmosphere. First, we developed a method for determination of crude oil VOC binary mixtures (take n-pentane and n-hexane as examples), taking synergistic effects of VOC mixtures on polydimethylsiloxane (PDMS) solid-phase microextraction (SPME) fibers into consideration. Using this method, we further aim to extract VOCs from small volumes, for example, from soil pores, using a custom-made sampling device for nondestructive SPME fiber intrusion, and to study VOC transport through heterogeneous porous media. Second, specific surface Brunauer-Emmett-Teller (BET) analysis was conducted and used for estimation of VOC isotherm parameters in soil. Finally, two models were fitted for VOC emission prediction, and the results were compared to the experimental emission results. It was found that free diffusion mode worked well, and an empirical correction factor seems to be needed for the other model to adapt to our condition for single and binary systems.

Emissions of volatile organic compounds from crude oil processing – Global emission inventory and environmental release

“…However, only a few studies have focused on analysing the major mechanisms of CVEs and their influential parameters under different conditions such as water soluble fraction of HCs in crude oil contaminated soil , ocean oil spillage and contaminated lands . The majority of these studies are associated with the fate of VOC emissions from petroleum industry in which VOCs emitted from various stages of crude oil processing including exploration, extraction, and production DeLuchi, 1993;Papailias and Mavroidis, 2018;, storage (DeLuchi, 1993;Theophanides et al, 2007), transportation (de Vos et al, 2007;DeLuchi, 1993;Howard and Nikolas, 2001;Karbasian et al, 2017;Lee and Chang, 2014;Lee et al, 2013;Martens et al, 2001;Milazzo et al, 2017;Paulauskiene et al, 2008;Sani and Mohanty, 2008;Tamaddoni et al, 2014), refineries Lin and Lee, 2006;Ragothaman and Anderson, 2017;Wei et al, 2014b;Zargar et al, 2013;Zhang et al, 2017c;, offshore Han et al, 2007;Müller and Sedláčková, 2003;Schädle et al, 2014;Uhler et al, 2010; and onshore activities (Almudhhi, 2016;Lawlor et al, 1997;Moyer et al, 1994;Müller and Sedláčková, 2003;Soukup et al, 2007;Wang et al, 2015a;Wang et al, 2015b; as well as accidental spillages. In addition to the source-specific properties of CVEs (i.e.…”

Statistical Evaluation of Quantities Measured in the Detection of Soil Air Pollution of the Environmental Burden

“…Within the framework of the survey and the remediation of polluted soils and grounds a range of geological and engineering activities are carried out, from the detection and evaluation of the current conditions of the affected areas, through the proposal and implementation of remediation and remediation measures, to post remediation monitoring and active environmental control [30,31].…”