Conference proceeding
Bioaugmentation of poplar roots with Amycolata sp CB1190 to enhance phytoremediation of 1,4-dioxane
PHYTOREMEDIATION AND INNOVATIVE STRATEGIES FOR SPECIALIZED REMEDIAL APPLICATIONS, pp.139-144
1999
Abstract
Bioaugmentation experiments were conducted with the dioxane-degrading actinomycete, Amycolata sp. CB1190. Reactors planted with hybrid poplar trees removed more dioxane within 26 days than in unplanted reactors, regardless of whether CB1190 was added. Addition of CB1190 enhanced mineralization of dioxane in all experiments. CB1190 increased the percentage of dioxane mineralized in unplanted soil from 9% to 26%. Experiments were also conducted with excised tree reactors that offer a root zone (exuding potentially stimulatory substrates) but do not remove dioxane through plant evapotranspiration. More dioxane was mineralized in the excised-tree reactor with CB1190 (35%) than in the one without CB1190 (7%). Although CB1190 also enhanced dioxane mineralization in planted soil, this enhancement was not statistically significant because plant uptake reduced the availability of dioxane for microbial mineralization. Rapid uptake of 1,4-dioxane by hybrid poplar trees coupled with CB1190 degradation makes phytoremediation an attractive alternative for dioxane-contaminated sites.
Details
- Title: Subtitle
- Bioaugmentation of poplar roots with Amycolata sp CB1190 to enhance phytoremediation of 1,4-dioxane
- Creators
- S L KelleyE W AitchisonJ L SchnoorPJJ Alvarez
- Contributors
- B C Alleman (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- PHYTOREMEDIATION AND INNOVATIVE STRATEGIES FOR SPECIALIZED REMEDIAL APPLICATIONS, pp.139-144
- Language
- English
- Date published
- 1999
- Academic Unit
- Occupational and Environmental Health; Civil and Environmental Engineering
- Record Identifier
- 9984232136702771
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