Remediation of PAH-contaminated soil by the combination of tall fescue, arbuscular mycorrhizal fungus and epigeic earthworms

被引：55

作者：

Lu, Yan-Fei ^{[1
]}

Lu, Mang ^{[2
]}

机构：

[1] Jiangxi Agr Univ, Sch Informat & Engn, Nanchang 330045, Peoples R China

[2] Jingdezhen Ceram Inst, Sch Mat Sci & Engn, Jingdezhen 333403, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2015年 / 285卷

基金：

中国国家自然科学基金;

关键词：

Phytoremediation; AMF; Polyphenol oxidase; qPCR; POLYCYCLIC AROMATIC-HYDROCARBONS; EISENIA-FOETIDA; REMOVAL; PHENANTHRENE; PHYTOREMEDIATION; BIODEGRADATION; DISSIPATION; ANTHRACENE; SEDIMENTS; RYEGRASS;

D O I：

10.1016/j.jhazmat.2014.07.021

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A 120-day experiment was performed to investigate the effect of a multi-component bioremediation system consisting of tall fescue (Festuca arundinacea), arbuscular mycorrhizal fungus (AMF) (Glomus caledoniun L.), and epigeic earthworms (Eisenia foetida) for cleaning up polycyclic aromatic hydrocarbons (PAHs)-contaminated soil. Inoculation with AMF and/or earthworms increased plant yield and PAH accumulation in plants. However, PAH uptake by tall fescue accounted for a negligible portion of soil PAH removal. Mycorrhizal tall fescue significantly enhanced PAH dissipation, PAH degrader density and polyphenol oxidase activity in soil. The highest PAH dissipation (93.4%) was observed in the combination treatment: i.e., AMF+ earthworms +tall fescue, in which the soil PAH concentration decreased from an initial value of 620 to 41 mg kg(-1) in 120 days. This concentration is below the threshold level required for Chinese soil PAH quality (45 mg kg(-1) dry weight) for residential use. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：535 / 541

页数：7

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