Using Bacillus amyloliquefaciens for remediation of aquaculture water
1 Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32XiQiDao, Tianjin Airport Economic Park, Tianjin, 300308, People’s Republic of China
2 Tianjin Research Center of Agricultural Biotechnology, Tianjin, 300192, People’s Republic of China
3 Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People’s Republic of China
SpringerPlus 2013, 2:119 doi:10.1186/2193-1801-2-119Published: 20 March 2013
Remediation of aquaculture water using microorganisms like Bacillus species is a burgeoning trend for the sustainable development of aquaculture industries. In this work, a Bacillus amyloliquefaciens strain (namely B. amyloliquefaciens HN), isolated from activated sludge of a polluted river, was evaluated for its potential in water remediation using simulated aquaculture water. B. amyloliquefaciens HN exhibited high tolerance towards 80 mg l-1 of nitrite-N and ammonia-N. It could effectively remove 20 mg l-1 of nitrite-N, but was inefficient in eliminating ammonia-N when the ammonia-N concentration was below 20 mg l-1. Further studies showed that the ammonia-N removal by B. amyloliquefaciens HN was more efficient at 30°C and 35°C than 25°C, and that maximum nitrite-N removal rate was achieved at pH 8.