کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
579845 | 1453143 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Arbuscular mycorrhizal phytoremediation of soils contaminated with phenanthrene and pyrene
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Arbuscular mycorrhizal phytoremediation of soils contaminated with phenanthrene and pyrene Arbuscular mycorrhizal phytoremediation of soils contaminated with phenanthrene and pyrene](/preview/png/579845.png)
چکیده انگلیسی
An available remediation technique - arbuscular mycorrhizal phytoremediation (AMPR) - is further proposed for soils contaminated with phenanthrene and pyrene as representative polycyclic aromatic hydrocarbons (PAHs) utilizing a greenhouse pot experiment. The initial concentrations of phenanthrene and/or pyrene in soils were 103 mg kgâ1 and 74 mg kgâ1, respectively. The host plant was alfalfa (Medicago sativa L.), and the experimental arbuscular mycorrhizal fungi (AMF) were Glomus mosseae and G. etunicatum. More than 98.6% and 88.1% of phenanthrene and pyrene were degraded after 70 days in soils with AMPR. Use of multiple mycorrhizal species significantly promoted degradation of PAHs in soils. The co-contaminant (pyrene) present clearly inhibited the degradation of a single PAH (phenanthrene) in soil. Mycorrhizal colonization caused increased accumulation of PAHs in plant roots but a decrease in shoot. However, plant uptake contributed negligibly to PAH dissipation in AMPR, and plant accumulated PAHs amounted to less than 3.24% of total PAH degradation in mycorrhizal soils. In contrast, the optimized microbiota in mycorrhizal association was responsible for PAH degradation in AMPR. The high rate of PAH dissipation in mycorrhizal soils, the evident promotion of PAH degradation by AM colonization, and the healthy plant growth suggest encouraging opportunities for AMPR of PAH-contaminated soils.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 185, Issues 2â3, 30 January 2011, Pages 703-709
Journal: Journal of Hazardous Materials - Volume 185, Issues 2â3, 30 January 2011, Pages 703-709
نویسندگان
Yanzheng Gao, Qiuling Li, Wanting Ling, Xuezhu Zhu,