Identification of novel strain Acinetobacter baumannii H1 and its improvement capacity for nutrient removal after coimmobilized on activated carbon and CaCO3 in real aquaculture wastewater
文献类型： 外文期刊
作者： Ma, Yonghao 1 ; Shu, Hu 1 ; Lu, Huijie 2 ; Zhou, Jiayi 1 ; Zhao, Jichen 2 ; Liu, Fengkun 2 ; Liu, Yuting 1 ; Lai, Xunheng 1 ; Lin, Junduo 1 ; Guo, Qiang 2 ; Yue, Sha 1 ; Huang, Wen 2 ;
作者机构： 1.Guangzhou Univ, Sch Life Sci, Guangzhou 510006, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Sci, Collaborat Innovat Ctr Aquat Sci, Guangdong Key Lab Anim Breeding & Nutr, Guangzhou 510640, Peoples R China
3.Shenzhen Univ, Med Sch, Shenzhen 518060, Peoples R China
关键词： Bacterial immobilization; Aerobic nitrogen and phosphate removal; Wastewater treatment; Bacterial community
期刊名称：ENVIRONMENTAL RESEARCH （ 影响因子：7.7； 五年影响因子：7.7 ）
ISSN： 0013-9351
年卷期： 2025 年 279 卷
页码：
收录情况： SCI
摘要： A new strain H1, Acinetobacter baumannii, exhibited the 96 % nitrogen and 76 % phosphate removal efficiencies in suspension environment after 48 h, and the optimal conditions were obtained at pH of 7-8, temperature of 30 degrees C, carbon source of succinate, carbon-nitrogen ratio of 10 and phosphorus-nitrogen ratio of 0.2, respectively. The immobilization experiments with activated carbon and CaCO3 were carried out, the optimal formula was 30 g/L CaCO3, 15 g/L activated carbon-bacteria complex, 2 % CaCl2 and a 1:1 embedding agent ratio. The removal efficiency of NH4+-N, total nitrogen, total phosphorus and chemical oxygen demand in immobilized H1 was 288.89 %, 121.87 %, 135.69 % and 667.21 % higher than that by free strain in group With Indigenous Bacteria, respectively. Under the real water environment, the nitrogen concentrations in the immobilization groups were 3-4 times lower than those of the suspension groups, and the abundances of N and P metabolism-associated bacterial communities (Proteobacteria and Patescibacteria) were higher in the immobilization groups. These results provided an approach for the practical application in aquaculture tailwater treatment.
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