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Isolation of a halophilic bacterium, Bacillus sp. strain NY-6 for organic contaminants removal in saline wastewater on ship |
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| Authors: | Jie Gao Zhenjiang Yu Xiaohui Zhang Dan Zhao Fangbo Zhao |
| Institution: | 11192. Key Laboratory of Superlight Materials and Surface Technologies, Ministry of Education, Harbin Engineering University, Harbin, 150001, China 21192. Department of Pathology, No. 4 Hospital of Harbin Medical University, Harbin, 150001, China 31192. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China |
| Abstract: | The objective of this research was to examine if certain strains of Bacillus bacteria, could survive in dry powder products and if so, could the bacteria degrade organic contaminants in saline wastewater on a ship. As part of the study, we isolated 7 domesticated strains named NY1, NY2,..., and NY7, the strain NY6 showed to have the best performance for organic matter degradation and could survive in dry powder more than 3 months. NY6 was identified as Bacillus aerius, based on the morphological and physic-chemical properties. Its optimal growth conditions were as follows: salinity was 2%; temperature was 37°C; pH was in 6.5–7.0; best ratio of C: N: P was 100:5:1. The capability of its dry powder for Chemical Oxygen Demand (COD) removal was 800mg COD/g in synthesized marine wastewater with 2% salinity. The spores in the dry powder were 1.972×108 g ?1. |
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