Analysis of the Effects of Salinity and form of Salt on Migration of Organic Pollutants through Berea Sandstone
Abstract
Hydraulic Fracturing has become a widely utilized technology and commonly involves injection of highly saline aqueous solutions that include a wide range of organic compounds including chlorinated solvents and methylated benzenes. The potential of these organic chemical to migrate through porous rocks is a product of their relative aqueous solubility as well as properties of the media. Herein will be presented the results of a series of tests of commonly used organic chemicals where they are flushed through rock cores of Berea Sandstone. In these tests, temperature, salinity, and type of salts are all varied. The results have found strong correlation with salting out coefficients determined determined by headspace gas chromatography. Quantitative Structural Property relationships based on Van't Hoff Equations show good agreement across the range of examined temperatures enabling predictions thermal effects on transport. In addition, the results of breakthrough curves have also simulated using GMS and MT3D software and showed that a dual-porosity model with rate-limited diffusion aptly reproduces the results.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.H31J2029B
- Keywords:
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- 1829 Groundwater hydrology;
- HYDROLOGYDE: 1831 Groundwater quality;
- HYDROLOGYDE: 1832 Groundwater transport;
- HYDROLOGYDE: 1847 Modeling;
- HYDROLOGY