Enhanced Degradation of Diesel Oil by Using Biofilms Formed by Indigenous Purple Photosynthetic Bacteria from Oil-Contaminated Coasts of Vietnam on Different Carriers

Le Thi Nhi-Cong, Do Thi Lien, Bhaskar Sen Gupta, Cung Thi Ngoc Mai, Hoang Phung Ha, Nguyen Thi Minh Nguyet, Tran Hoa Duan, Dong Van Quyen, Hayyiratul Fatimah Mohd Zaid, Revathy Sankaran, Pau Loke Show

Research output: Contribution to journalArticle

Abstract

Oil pollution in marine environment caused by oil spillage has been a main threat to the ecosystem including the ocean life and to the human being. In this research, three indigenous purple photosynthetic strains Rhodopseudomonas sp. DD4, DQ41, and FO2 were isolated from oil-contaminated coastal zones in Vietnam. The cells of these strains were immobilized on different carriers including cinder beads (CB), coconut fiber (CF), and polyurethane foam (PUF) for diesel oil removal from artificial seawater. The mixed biofilm formed by using CB, CF, and PUF as immobilization supports degraded 90, 91, and 95% of diesel oil (DO) with the initial concentration of 17.2 g/L, respectively, after 14 days of incubation. The adsorption of DO on different systems was accountable for the removal of 12–16% hydrocarbons for different carriers. To the best of our knowledge, this is the first report on diesel oil degradation by purple photosynthetic bacterial biofilms on different carriers. Moreover, using carriers attaching purple photosynthetic bacteria to remove diesel oil in large scale is considered as an essential method for the improvement of a cost-effective and efficient bioremediation manner. This study can be a promising approach to eliminate DO from oil-contaminated seawater.
Original languageEnglish
Pages (from-to)1-18
Number of pages18
JournalApplied Biochemistry and Biotechnology
Early online date18 Dec 2019
DOIs
Publication statusE-pub ahead of print - 18 Dec 2019

Keywords

  • Biofilm
  • Diesel Oil
  • Biodegradation
  • Immobilization Carrier
  • Purple photosynthetic bacteria
  • Rhodopseudonomas sp.

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