Parsons, Natalie Loretta Irene (2025) Evaluating the potential of using bioremediation and rhizoremediation for a hydrocarbon-contaminated site. Masters thesis, Memorial University of Newfoundland.
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Abstract
This study assesses the potential of an integrated biological approach to remediate a hydrocarbon-contaminated site with poor soil conditions. It focuses on a 0.85-ha industrial area in Channel Port-Aux-Basques, Newfoundland, operational since 1978. Current contamination levels exceed safety thresholds, necessitating action due to ecological and human health risks. By using natural processes as a means of restoring brownfield sites, the economic and ecological costs associated with capital-intensive remediation technologies are avoided. The study involves a multi-stage experimental design, starting with laboratory trials to assess how various biostimulation and bioaugmentation techniques enhance hydrocarbon degradation. The impact of rhizosphere interactions is also investigated. Promising strategies identified from laboratory trials are implemented in an outdoor leachate-controlled pot experiment. Sampling protocols are employed to analyze changes in hydrocarbon concentrations and soil quality over a one-year period. The study underscores the importance of considering both natural attenuation and enhanced remediation techniques in brownfield management, as supported by the slower but still detectable natural attenuation alongside accelerated remediation with amendments. Treatments involving organic amendments combined with grass seed are particularly effective for hydrocarbon remediation. These findings carry practical implications for remediation strategies, emphasizing the role of organic amendments and rhizospheric interactions in facilitating successful bioremediation of Total Petroleum Hydrocarbon (TPH)-contaminated sites.
| Item Type: | Thesis (Masters) |
|---|---|
| URI: | http://research.library.mun.ca/id/eprint/16964 |
| Item ID: | 16964 |
| Additional Information: | Includes bibliographical references (pages 61-67) -- Restricted until January 1, 2026 |
| Keywords: | bioremediation, rhizoremediation, TPH, hydrocarbon |
| Department(s): | Grenfell Campus > School of Science and the Environment > Boreal Ecosystems and Agricultural Sciences |
| Date: | May 2025 |
| Date Type: | Submission |
| Library of Congress Subject Heading: | Bioremediation; Hydrocarbon-producing plants; Oil pollution of soils--Environmental aspects; Soil remediation; Rhizosphere; Hydrocarbons--Biodegradation |
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