Journal
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
Volume 191, Issue 1, Pages 313-330Publisher
SPRINGER
DOI: 10.1007/s12010-019-03203-x
Keywords
Biofilm; Diesel oil biodegradation; Immobilization carrier; Purple photosynthetic bacteria; Rhodopseudomonas sp
Funding
- Yayasan Universiti Teknologi PETRONAS [YUTP 015LC0-047] Funding Source: Medline
- Vietnam National Foundation for Science and Technology Development (VN) [106-NN.04-2015.45] Funding Source: Medline
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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 strainsRhodopseudomonassp. 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.
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