Response of autochthonous microbiota of diesel polluted soils to landfarming treatments

被引：43

作者：

Andrea Silva-Castro, Gloria ^{[2
]}

Uad, Imane ^{[2
]}

Rodriguez-Calvo, Alfonso ^{[2
,3
]}

Gonzalez-Lopez, Jesus ^{[1
,2
]}

Calvo, Concepcion ^{[1
,2
]}

机构：

[1] Univ Granada, Dept Microbiol, E-18071 Granada, Spain

[2] Univ Granada, Inst Water Res, E-18071 Granada, Spain

[3] Univ Granada, Dept Civil Engn, E-18071 Granada, Spain

来源：

ENVIRONMENTAL RESEARCH | 2015年 / 137卷

关键词：

Land-farming; Diesel pollution; Surfactant; Inorganic fertilizer; Bioremediation; OIL-CONTAMINATED SOIL; HYDROCARBON BIODEGRADATION; BIOREMEDIATION; BIOSTIMULATION; SURFACTANTS;

D O I：

10.1016/j.envres.2014.11.009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study investigated the response of autochthonous microorganisms of diesel polluted soils to land-farming treatments. Inorganic NPK (nitrogen, phosphorous, and potassium) fertilizer and Ivey surfactant were applied alone or in combination as biostimulating agents. The study was carried out in experimental separated land-farming plots performed with two soils: a sandy clay soil with low biological activity and a sandy clay soil with higher biological activity, contaminated with two concentrations of diesel: 10,000 and 20,000 mg kg(-1). Bacterial growth, dehydrogenase activity and CO2 production were the biological parameters evaluated. Non-metric multidimensional scaling analysis proved that moisture content showed a tendency related to microbial growth and that heterotrophic and degrading microorganisms had the best relationship. Initial biological activity of soil influenced the response with 11.1% of variability attributed to this parameter. Soils with low activity had higher degree of response to nutrient addition. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：49 / 58

页数：10

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