Remediation of Brine-Contaminated Soils Using Atriplexspp. (Chenopodiaceae)
| Autor: | Kendal L. Keyes, David A. Jensen, Joanna B. Mott, Steven S. Barnes |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | International Oil Spill Conference Proceedings. 1999:757-764 |
| ISSN: | 2169-3358 2169-3366 |
| DOI: | 10.7901/2169-3358-1999-1-757 |
| Popis: | The ability of some halophytes to accumulate salts may make them helpful in remediating soil contaminated with produced water and drilling mud from oil and gas exploration and production. Three inland halophytes, Atriplex acanthocarpa (two accessions) and A. canescens, were grown in pot culture in salt-contaminated soil, soil contaminated with salt and hydrocarbons, and uncontaminated soil collected from a Webb Co., Texas, gas production site. Electrical conductivity and soluble sodium of the soil extract were determined prior to planting and re-analyzed following harvest. Total sodium content in mature leaves was determined following harvest. Mature plant survival for all species in all soils ranged from 90–100%. In the salt-contaminated soil, post-harvest electrical conductivity and soluble sodium were significantly lower in the planted soils than in the unplanted soil. For each accession, biomass and plant mortality were greatest in the salt-contaminated soil. In both contaminated soils, the local ecotype of A. acanthocarpa had the highest concentration of tissue sodium and produced the greatest decrease in both electrical conductivity and soluble sodium. Field studies are necessary to determine the effectiveness of in situ application. |
| Databáze: | OpenAIRE |
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