Degradation of petroleum hydrocarbons by embedding immobilized crude oil degrading bacteria

Author:

Zhang Pin1,Wang Xiaoli1,Peng Shitao2,Tian Xiumei1,Li Zhaokun1,Zhou Ran2

Affiliation:

1. School of Environmental Science & Safety Engineering, Tianjin University of Technology, Tianjin, China

2. Laboratory of Environmental protection in Water Transport Engineering, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin, China

Abstract

Abstract In this study, the removal effect of free and immobilized bacteria on crude oil was determined. Sodium alginate and polyvinyl alcohol were used as embedding agent, and ramie was modified as an adsorbent to immobilize free bacteria. The conditions for preparing immobilized pellets were optimized using the response surface method, and the best combination was simulated and obtained by Design-Expert 8.0. The best degradation rate of immobilized bacteria was 75.52%. The degradation by free bacteria and immobilized bacteria showed that the selected microorganisms had a good degradation effect on petroleum hydrocarbons.

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

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