Bioaugmentation of pentachlorophenol in soil and hydroponic systems

被引：23

作者：

Dams, R. I.

Paton, G.

Killham, K.

机构：

[1] Univali Univ Vale Itajai, BR-88330000 Balneario, SC, Brazil

[2] Univ Aberdeen, Plant & Soil Dept, Aberdeen, Scotland

来源：

INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 2007年 / 60卷 / 03期

关键词：

pentachlorophenol degradation; Sphingobium chlorophenolicum; hydroponic systems; soil systems;

D O I：

10.1016/j.ibiod.2007.02.006

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Sphingobium chlorophenolicum is well known as pentachlorophenol (PCP) degrader. The objective of this study was to evaluate the PCP degradation in soil and hydroponic systems using a bioaugmentation technique. Measurements of PCP concentrations were carried out using high-performance liquid chromatography (HPLC) analyses. The toxic effect of PCP on plants was studied through the monitoring of plant weight. An acute toxicity assay of PCP was performed using Escherichia coli HB101 pUCD607. The introduction of S. chlorophenolicum into soil with plants showed a faster degradation when compared to the non-inoculated soil. In the soil system, plants acted as a vector to the target compound, PCP. The monitoring of the plant growth showed a protective role of S. chlorophenolicum against the toxicity of PCP. In the hydroponic system S. chlorophenolicum showed the ability to degrade 16mgl(-1) after 7 days of experiments at both concentrations tested (20 and 30mgl(-1) PCP). The bioassay confirmed that initial toxicity was lowered while degradation progressed in both systems. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：171 / 177

页数：7

共 34 条

[1] BIOREMEDIATION IN THE RHIZOSPHERE [J].