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Phytoremediation of Water and Soil Contaminated with Imidacloprid Pesticide by Plantago Major, L.
Faculty
Not Specified
Year:
2010
Type of Publication:
Article
Pages:
188-199
Authors:
Romeh, A. A
DOI:
10.1080/15226510903213936
Journal:
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION TAYLOR \& FRANCIS INC
Volume:
12
Research Area:
Environmental Sciences \& Ecology
ISSN
ISI:000277460300005
Keywords :
Pytoremediation, broadleaf plantain plant, soil, water, imidacloprid
Abstract:
Broadleaf plantain plant (Plantago major L.) was used in phytoremediation of imidacloprid insecticide in water and soils. For the Freundlich model, the constant related to the biosorption capacity (Kf) of imidaclaprid were respectively, 7.94, 6.31, and 2.51ug/g for dry roots, fruits (seeds with shells) and leaves of broadleaf plantain plant. Viable whole broadleaf plantain plant in water solution reduced imidacloprid residues by 55.81-95.17\%, during 1-10 days of exposure periods compared with 13.71-61.95\% in water solution without the plantain. In water solution, imidacloprid significantly accumulated in plantain roots, leaves and fruits to reach the maximum levels after 6, 1 and 3 days of treatment, respectively. The maximum levels were 15.74, 37.21, and 5.74 ug/gm, respectively. These values were decreased to 6.95, 1.46, and 0.12 ug/ gm after 10 days of treatment. The growing cells of short-rod gram-negative bacteria that isolated from the water solution containing broadleaf plantain plants was able to induce 93.34\% loss of imidacloprid as a source of both carbon and nitrogen within a short period (48 hr) compared with 31.90\% in un inoculated medium. Half-life (t 1/2) in soil planted with broadleaf plantain plants and in unplanted soil were found to be 4.8 and 8.4 days, respectively.
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