期刊
SOIL & SEDIMENT CONTAMINATION
卷 26, 期 1, 页码 127-140出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15320383.2017.1246516
关键词
Aeluropus littoralis; phytoremediation; soil; Sorghum halepense; TPHs
资金
- National Iranian South Oil Company (NISOC)
- Ahvaz Jundishapur University of Medical Science
- Agricultural Research Centre of Ahvaz, Iran
This study evaluated the effects of native plants (Sorghum halepense and Aeluropus littoralis), total petroleum hydrocarbons (TPH) concentrations, and nutrients on the removal of TPHs from a highly saline clay soil. For a period of 180days, rhizosphere microbial number, plant biomass, and residual TPHs were determined monthly. Results showed that TPH removal from soil in the rhizosphere was 13% higher than that in the control (unplanted soil). In addition, the number of heterotrophic bacteria in the rhizosphere and non-rhizosphere soil was 7.407 and 6.629 log(10)CFU/g, respectively. The maximum TPH removal, microbial numbers, and plant biomass were measured in the treated soil, polluted with 0.86% (w/w) of TPH. The high clay and salinity of the experimental soil had a negative effect on the phytoremediation efficiency. Hence, it was necessary to improve the physicochemical properties of the soil to provide a good condition for plants and microbes, thereby increasing the phytoremediation efficiency.
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