Interactions Between Indigenous and Immobilized Microorganisms in Bioremediation of Petro-Contaminated Soil

Interactions
between Indigenous and Immobilized Microorganisms in Bioremediation of Petro-contaminated
Soil

Yutong
Han [1],
Xiuxia Zhang, Xuejing Bai, Haijie Wu, Shoujuan Zhang, Han Zhang

Department
of Environmental and Safety Engineering, China University of Petroleum (East
China), No. 66, Changjiang West Road,Qingdao
Economic & Technical Development Zone, Qingdao 266580,
China

Abstract

In this study,
straw SY (leaves ) was used as a
carrier to adsorb and immobilize high-efficiency petroleum-degrading bacteria.
The immobilized microorganisms were used to repair petro-contaminated soil. The interactions between the indigenous and
immobilized microorganisms was evaluated..The results show that the
immobilized microorganisms and the indigenous microorganisms were allowed to
interact with each other under the suitable conditions. And the degradation rate of
petroleum hydrocarbons during the 35 days of the experiment, using the
immobilized and indigenous microorganisms together, could reach 20.78%. It reveals the
indigenous microorganism and immobilized microorganism have synergy, and
improves the bioremediation efficiency of petro-contaminated soil.

Keywords:
immobilized microorganism; indigenous microorganism; oil-contaminated soil; bioremediation