Core-shell bioactive capsule for aquaculture wastewater denitrification

文献类型： 外文期刊

第一作者： Li, Hua

作者： Li, Hua;Duan, Yafei;Dong, Hongbiao;Zhang, Jiasong;Li, Hua;Duan, Yafei;Dong, Hongbiao;Zhang, Jiasong

作者机构：

关键词： Aquaculture wastewater; Denitrification; Denitrifying bacteria; Immobilized microorganisms; Encapsulation

期刊名称：BIOCHEMICAL ENGINEERING JOURNAL （ 影响因子：3.8； 五年影响因子：3.7 ）

ISSN： 1369-703X

年卷期： 2024 年 211 卷

页码：

收录情况： SCI

摘要： The lack of denitrifying bacteria and organic carbon sources, and the inhibition of dissolved oxygen (DO) result in nitrate accumulation in aquaculture wastewater. In order to solve this problem, an encapsulation method was introduced to prepare a novel bioactive capsule, which can provide organic carbon source, denitrifying bacteria, and anoxic microenvironment for aquaculture wastewater denitrification. And can reduce the recovery time of the enclosed denitrifying bacteria. The morphology of the capsule, its nitrate removal rate, and nitrogen conversion pathway in synthetic aquaculture wastewater were investigated. The capsule had a porous surface and the pore diameter ranged from 150.0 nm to 300.0 nm. The enclosed denitrifying bacteria had a reduced recovery time and excellent denitrification performance. The nitrate removal rate reached 86.2 % on the first day and was maintained at 99.7 %. Nitrogen conversion pathways in the capsule include denitrification, assimilatory/ dissimilatory nitrate reduction, and nitrogen fixation. The denitrifying capsule has short recovery time and good denitrification performance, which would help to achieve denitrification in aquaculture wastewater or other low C/N wastewater.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序