Date of Award

2016

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Soil Science

Department

Soil Science

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Daigh, Aaron

Description

Anthropogenic soil salinity caused by produced water (i.e., brine) contamination is an issue in all oil and gas producing regions. The objectives of this research are to develop soil electrical conductivity (EC) conversion equations for rapid site assessment of brine spills and to determine the efficacy of crystallization inhibitors as an in-situ remediation method. Conversion equations were developed for soil-to-water suspensions and saturated paste extracts (ECe) on brine-contaminated soils. These new equations provided the best prediction of ECe when compared to 14 other equations reported in the literature. A crystallization inhibitor (C18Fe7N18) applied to NaCl-contaminated soils using various concentrations and methods of application yielded dendritic salt crystals above the soil surface. On average, between 0.29 and 0.57 g g-1 of NaCl salts effloresced when surface applying a 0.01M concentration of the crystallization inhibitor. Results from these studies will guide consultants and researchers in the assessment and remediation of brine-contaminated soils.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Handle Identifier

https://hdl.handle.net/10365/28056

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