Heavy metal resistant strain for degrading polycyclic aromatic hydrocarbons (PAHs) and application thereof in combined contaminated soil remediation

Abstract

The invention belongs to the technical field of environmental engineering and microbiology engineering, and particularly relates to a strain for grading PAHs and an application thereof in combined contaminated soil remediation. The strain is an enterobacter cloacae tzyx2 with the collection number of CCTCC NO: M 2012240 in the China Center for Type Culture Collection (CCTCC), and is provided with the capacity to degrade the PAHs. The strain is applied to treatment of the PAHs and heavy metal polluted soil.

Description

technical field

[0001] The invention belongs to the technical fields of environmental engineering and microbial engineering. In particular, a PAH-degrading Enterobacter cloacae ( Enterobacter cloacae ) tzyx2 and its application in complex contaminated soil remediation. Background technique

[0002] Polycyclic aromatic hydrocarbons (PAHs) are a class of persistent organic pollutants (POPs). PAHs pollution sources mainly come from waste machine oil, lubricating oil of electrical products, and hydrocarbon-containing substances such as wood, organic polymer compounds, paper, etc. from the dismantling of waste metal through incomplete combustion or thermal decomposition in a reducing atmosphere. And generated. Because PAHs and their derivatives have carcinogenicity, mutagenicity and teratogenicity, as well as acute toxicity and sublethal effects, they have attracted great attention.

[0003] The remediation of polycyclic aromatic hydrocarbons (PAHs) contaminated soil is a res...